The Experts below are selected from a list of 1146 Experts worldwide ranked by ideXlab platform
Tuan Li - One of the best experts on this subject based on the ideXlab platform.
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Suppression of dynamic offset of electromagnetic Drive Module for micro-gyroscope
Mechanical Systems and Signal Processing, 2011Co-Authors: Nan-chyuan Tsai, Jiun Sheng Liou, Tuan LiAbstract:Abstract An innovative 3-phase alternative current (AC) Drive circuit for the seismic disc in micro-gyroscopes is designed and verified by computer simulations and experiments. The in-plane dynamic model of the seismic disc with mass eccentricity and air gap against the centre bearing and the mathematic expression of two sinusoidal magnetic fields are developed respectively. In order to prevent the seismic disc from collision with the centre bearing and the electromagnetic (EM) poles, an anti-collision controller is established by employing two look-up tables which define the intensity of the applied current to the EM poles. Self-sensing technique is included to measure the real-time offset of the disc by two orthogonal pairs of EM poles, without any additional sensors. The Drive circuit under sinusoidal pulse width modulation (SPWM) operation and the anti-collision strategy are verified by intensive computer simulations via commercial software, OrCAD 9, and experiments.
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Suppression of dynamic offset of electromagnetic Drive Module for micro-gyroscope
Mechanical Systems and Signal Processing, 2011Co-Authors: Nan-chyuan Tsai, Jiun Sheng Liou, Chih-che Lin, Tuan LiAbstract:An innovative 3-phase alternative current (AC) Drive circuit for the seismic disc in micro-gyroscopes is designed and verified by computer simulations and experiments. The in-plane dynamic model of the seismic disc with mass eccentricity and air gap against the centre bearing and the mathematic expression of two sinusoidal magnetic fields are developed respectively. In order to prevent the seismic disc from collision with the centre bearing and the electromagnetic (EM) poles, an anti-collision controller is established by employing two look-up tables which define the intensity of the applied current to the EM poles. Self-sensing technique is included to measure the real-time offset of the disc by two orthogonal pairs of EM poles, without any additional sensors. The Drive circuit under sinusoidal pulse width modulation (SPWM) operation and the anti-collision strategy are verified by intensive computer simulations via commercial software, OrCAD 9, and experiments. ?? 2010 Elsevier Ltd.All rights reserved.
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Drive and Control of Electromagnetic Drive Module on Reciprocally Rotating Disc Used for Micro-Gyroscope
Journal of Electromagnetic Analysis and Applications, 2010Co-Authors: Nan-chyuan Tsai, Jiun Sheng Liou, Tuan LiAbstract:An innovative 3-phase AC (Alternative Current) Drive circuit for the seismic disc in micro-gyroscopes is designed and verified by computer simulations and experiments. The in-plane dynamic model of the seismic disc with mass eccentricity and air gap against the centre bearing and the mathematic expression of two sinusoidal magnetic fields are developed respectively. In order to prevent the seismic disc from collision with the centre bearing and the EM (Electromagnetic) poles, an anti-collision controller is established by employing two Look-up tables which define the intensity of the applied current to the EM poles. Self-sensing technique is included to measure the real-time offset of the disc by two orthogonal pairs of EM poles, without any additional sensors. The Drive circuit under SPWM (Sinusoidal Pulse Width Modulation) operation and the anti-collision strategy are verified by intensive computer simulations via commercial software, OrCAD 9, and experiments.
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Design of micro-electromagnetic Drive on reciprocally rotating disc used for micro-gyroscopes
Sensors and Actuators A: Physical, 2010Co-Authors: Nan-chyuan Tsai, Jiun Sheng Liou, Chih-che Lin, Tuan LiAbstract:For micro-gyroscopes, the angular rate detection components have to oscillate forwards and backwards alternatively. An innovative design of micro-electromagnetic Drive Module is proposed to make a Π-type thin disc reciprocally and efficiently rotate within a certain of angular interval. Twelve EM (Electromagnetic) poles, with iron cores at the center and wound by electroplated copper wires, enclosing the thin disc are designed to provide the magnetic Drive power. Isotropic etching technique is employed to fabricate the high-aspect-ratio trench, housing of the follow-up electroplated copper, so that the contact angle of wire against trench can be increased and the potential defect of cavities and pores within the wire can be prevented. On the other hand, a Π-type thin disc, with a central bearing and a set of auxiliary bushing, is designed to conduct the pitch motion as an angular excitation, in addition to spinning, is exerted on the gyroscope. That is, the angular motion of the disc is two-dimensional: spinning, Driven by the EM poles, and tilting, to respond to the exerted angular rate due to Coriolis effect. The efficacy of the micro-magnetic Drive Module is verified by theoretical analysis and computer simulations by the commercial software, Ansoft Maxewll. In comparison with the conventional planar windings in micro-scale systems, the magnetic Drive force is increased by 150%. © 2009 Elsevier B.V. All rights reserved.
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Analysis and fabrication of reciprocal motors applied for microgyroscopes
Journal of Micro-nanolithography Mems and Moems, 2009Co-Authors: Nan-chyuan Tsai, Jiun Sheng Liou, Tuan LiAbstract:For microgyroscopes, the angular rate detection components have to oscillate forward and backward, alternatively. An innovative design of a microelectromagnetic Drive Module is proposed to make a Π-type thin disk reciprocally and efficiently rotate within a certain of angular interval. Twelve electromagnetic (EM) poles, with iron cores at the center and wound by electroplated copper wires, enclosing the thin disk are designed to provide the magnetic Drive power. An isotropic etching technique is employed to fabricate the high-aspect-ratio trench, housing of the follow-up electroplated copper, so that the contact angle of wire against the trench can be increased and the potential defect of cavities and pores within the wire can be prevented. On the other hand, a Π-type thin disk, with a central bearing and a set of auxiliary bushings, is designed to conduct the pitch motion as an angular excitation, in addition to spinning, is exerted on the gyroscope. That is, the angular motion of the disk is two-dimensional: spinning, Driven by the EM poles, and tilting, to respond to the exerted angular rate due to Coriolis effect. The efficacy of the micromagnetic Drive Module is verified by theoretical analysis and computer simulations by the commercial software, Ansoft Maxewll. In comparison to the conventional planar windings in microscale systems, the magnetic Drive force is increased by 150%.
Nan-chyuan Tsai - One of the best experts on this subject based on the ideXlab platform.
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Suppression of dynamic offset of electromagnetic Drive Module for micro-gyroscope
Mechanical Systems and Signal Processing, 2011Co-Authors: Nan-chyuan Tsai, Jiun Sheng Liou, Tuan LiAbstract:Abstract An innovative 3-phase alternative current (AC) Drive circuit for the seismic disc in micro-gyroscopes is designed and verified by computer simulations and experiments. The in-plane dynamic model of the seismic disc with mass eccentricity and air gap against the centre bearing and the mathematic expression of two sinusoidal magnetic fields are developed respectively. In order to prevent the seismic disc from collision with the centre bearing and the electromagnetic (EM) poles, an anti-collision controller is established by employing two look-up tables which define the intensity of the applied current to the EM poles. Self-sensing technique is included to measure the real-time offset of the disc by two orthogonal pairs of EM poles, without any additional sensors. The Drive circuit under sinusoidal pulse width modulation (SPWM) operation and the anti-collision strategy are verified by intensive computer simulations via commercial software, OrCAD 9, and experiments.
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Suppression of dynamic offset of electromagnetic Drive Module for micro-gyroscope
Mechanical Systems and Signal Processing, 2011Co-Authors: Nan-chyuan Tsai, Jiun Sheng Liou, Chih-che Lin, Tuan LiAbstract:An innovative 3-phase alternative current (AC) Drive circuit for the seismic disc in micro-gyroscopes is designed and verified by computer simulations and experiments. The in-plane dynamic model of the seismic disc with mass eccentricity and air gap against the centre bearing and the mathematic expression of two sinusoidal magnetic fields are developed respectively. In order to prevent the seismic disc from collision with the centre bearing and the electromagnetic (EM) poles, an anti-collision controller is established by employing two look-up tables which define the intensity of the applied current to the EM poles. Self-sensing technique is included to measure the real-time offset of the disc by two orthogonal pairs of EM poles, without any additional sensors. The Drive circuit under sinusoidal pulse width modulation (SPWM) operation and the anti-collision strategy are verified by intensive computer simulations via commercial software, OrCAD 9, and experiments. ?? 2010 Elsevier Ltd.All rights reserved.
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Drive and Control of Electromagnetic Drive Module on Reciprocally Rotating Disc Used for Micro-Gyroscope
Journal of Electromagnetic Analysis and Applications, 2010Co-Authors: Nan-chyuan Tsai, Jiun Sheng Liou, Tuan LiAbstract:An innovative 3-phase AC (Alternative Current) Drive circuit for the seismic disc in micro-gyroscopes is designed and verified by computer simulations and experiments. The in-plane dynamic model of the seismic disc with mass eccentricity and air gap against the centre bearing and the mathematic expression of two sinusoidal magnetic fields are developed respectively. In order to prevent the seismic disc from collision with the centre bearing and the EM (Electromagnetic) poles, an anti-collision controller is established by employing two Look-up tables which define the intensity of the applied current to the EM poles. Self-sensing technique is included to measure the real-time offset of the disc by two orthogonal pairs of EM poles, without any additional sensors. The Drive circuit under SPWM (Sinusoidal Pulse Width Modulation) operation and the anti-collision strategy are verified by intensive computer simulations via commercial software, OrCAD 9, and experiments.
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Design of micro-electromagnetic Drive on reciprocally rotating disc used for micro-gyroscopes
Sensors and Actuators A: Physical, 2010Co-Authors: Nan-chyuan Tsai, Jiun Sheng Liou, Chih-che Lin, Tuan LiAbstract:For micro-gyroscopes, the angular rate detection components have to oscillate forwards and backwards alternatively. An innovative design of micro-electromagnetic Drive Module is proposed to make a Π-type thin disc reciprocally and efficiently rotate within a certain of angular interval. Twelve EM (Electromagnetic) poles, with iron cores at the center and wound by electroplated copper wires, enclosing the thin disc are designed to provide the magnetic Drive power. Isotropic etching technique is employed to fabricate the high-aspect-ratio trench, housing of the follow-up electroplated copper, so that the contact angle of wire against trench can be increased and the potential defect of cavities and pores within the wire can be prevented. On the other hand, a Π-type thin disc, with a central bearing and a set of auxiliary bushing, is designed to conduct the pitch motion as an angular excitation, in addition to spinning, is exerted on the gyroscope. That is, the angular motion of the disc is two-dimensional: spinning, Driven by the EM poles, and tilting, to respond to the exerted angular rate due to Coriolis effect. The efficacy of the micro-magnetic Drive Module is verified by theoretical analysis and computer simulations by the commercial software, Ansoft Maxewll. In comparison with the conventional planar windings in micro-scale systems, the magnetic Drive force is increased by 150%. © 2009 Elsevier B.V. All rights reserved.
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Analysis and fabrication of reciprocal motors applied for microgyroscopes
Journal of Micro-nanolithography Mems and Moems, 2009Co-Authors: Nan-chyuan Tsai, Jiun Sheng Liou, Tuan LiAbstract:For microgyroscopes, the angular rate detection components have to oscillate forward and backward, alternatively. An innovative design of a microelectromagnetic Drive Module is proposed to make a Π-type thin disk reciprocally and efficiently rotate within a certain of angular interval. Twelve electromagnetic (EM) poles, with iron cores at the center and wound by electroplated copper wires, enclosing the thin disk are designed to provide the magnetic Drive power. An isotropic etching technique is employed to fabricate the high-aspect-ratio trench, housing of the follow-up electroplated copper, so that the contact angle of wire against the trench can be increased and the potential defect of cavities and pores within the wire can be prevented. On the other hand, a Π-type thin disk, with a central bearing and a set of auxiliary bushings, is designed to conduct the pitch motion as an angular excitation, in addition to spinning, is exerted on the gyroscope. That is, the angular motion of the disk is two-dimensional: spinning, Driven by the EM poles, and tilting, to respond to the exerted angular rate due to Coriolis effect. The efficacy of the micromagnetic Drive Module is verified by theoretical analysis and computer simulations by the commercial software, Ansoft Maxewll. In comparison to the conventional planar windings in microscale systems, the magnetic Drive force is increased by 150%.
Jiun Sheng Liou - One of the best experts on this subject based on the ideXlab platform.
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Suppression of dynamic offset of electromagnetic Drive Module for micro-gyroscope
Mechanical Systems and Signal Processing, 2011Co-Authors: Nan-chyuan Tsai, Jiun Sheng Liou, Tuan LiAbstract:Abstract An innovative 3-phase alternative current (AC) Drive circuit for the seismic disc in micro-gyroscopes is designed and verified by computer simulations and experiments. The in-plane dynamic model of the seismic disc with mass eccentricity and air gap against the centre bearing and the mathematic expression of two sinusoidal magnetic fields are developed respectively. In order to prevent the seismic disc from collision with the centre bearing and the electromagnetic (EM) poles, an anti-collision controller is established by employing two look-up tables which define the intensity of the applied current to the EM poles. Self-sensing technique is included to measure the real-time offset of the disc by two orthogonal pairs of EM poles, without any additional sensors. The Drive circuit under sinusoidal pulse width modulation (SPWM) operation and the anti-collision strategy are verified by intensive computer simulations via commercial software, OrCAD 9, and experiments.
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Suppression of dynamic offset of electromagnetic Drive Module for micro-gyroscope
Mechanical Systems and Signal Processing, 2011Co-Authors: Nan-chyuan Tsai, Jiun Sheng Liou, Chih-che Lin, Tuan LiAbstract:An innovative 3-phase alternative current (AC) Drive circuit for the seismic disc in micro-gyroscopes is designed and verified by computer simulations and experiments. The in-plane dynamic model of the seismic disc with mass eccentricity and air gap against the centre bearing and the mathematic expression of two sinusoidal magnetic fields are developed respectively. In order to prevent the seismic disc from collision with the centre bearing and the electromagnetic (EM) poles, an anti-collision controller is established by employing two look-up tables which define the intensity of the applied current to the EM poles. Self-sensing technique is included to measure the real-time offset of the disc by two orthogonal pairs of EM poles, without any additional sensors. The Drive circuit under sinusoidal pulse width modulation (SPWM) operation and the anti-collision strategy are verified by intensive computer simulations via commercial software, OrCAD 9, and experiments. ?? 2010 Elsevier Ltd.All rights reserved.
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Drive and Control of Electromagnetic Drive Module on Reciprocally Rotating Disc Used for Micro-Gyroscope
Journal of Electromagnetic Analysis and Applications, 2010Co-Authors: Nan-chyuan Tsai, Jiun Sheng Liou, Tuan LiAbstract:An innovative 3-phase AC (Alternative Current) Drive circuit for the seismic disc in micro-gyroscopes is designed and verified by computer simulations and experiments. The in-plane dynamic model of the seismic disc with mass eccentricity and air gap against the centre bearing and the mathematic expression of two sinusoidal magnetic fields are developed respectively. In order to prevent the seismic disc from collision with the centre bearing and the EM (Electromagnetic) poles, an anti-collision controller is established by employing two Look-up tables which define the intensity of the applied current to the EM poles. Self-sensing technique is included to measure the real-time offset of the disc by two orthogonal pairs of EM poles, without any additional sensors. The Drive circuit under SPWM (Sinusoidal Pulse Width Modulation) operation and the anti-collision strategy are verified by intensive computer simulations via commercial software, OrCAD 9, and experiments.
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Design of micro-electromagnetic Drive on reciprocally rotating disc used for micro-gyroscopes
Sensors and Actuators A: Physical, 2010Co-Authors: Nan-chyuan Tsai, Jiun Sheng Liou, Chih-che Lin, Tuan LiAbstract:For micro-gyroscopes, the angular rate detection components have to oscillate forwards and backwards alternatively. An innovative design of micro-electromagnetic Drive Module is proposed to make a Π-type thin disc reciprocally and efficiently rotate within a certain of angular interval. Twelve EM (Electromagnetic) poles, with iron cores at the center and wound by electroplated copper wires, enclosing the thin disc are designed to provide the magnetic Drive power. Isotropic etching technique is employed to fabricate the high-aspect-ratio trench, housing of the follow-up electroplated copper, so that the contact angle of wire against trench can be increased and the potential defect of cavities and pores within the wire can be prevented. On the other hand, a Π-type thin disc, with a central bearing and a set of auxiliary bushing, is designed to conduct the pitch motion as an angular excitation, in addition to spinning, is exerted on the gyroscope. That is, the angular motion of the disc is two-dimensional: spinning, Driven by the EM poles, and tilting, to respond to the exerted angular rate due to Coriolis effect. The efficacy of the micro-magnetic Drive Module is verified by theoretical analysis and computer simulations by the commercial software, Ansoft Maxewll. In comparison with the conventional planar windings in micro-scale systems, the magnetic Drive force is increased by 150%. © 2009 Elsevier B.V. All rights reserved.
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Analysis and fabrication of reciprocal motors applied for microgyroscopes
Journal of Micro-nanolithography Mems and Moems, 2009Co-Authors: Nan-chyuan Tsai, Jiun Sheng Liou, Tuan LiAbstract:For microgyroscopes, the angular rate detection components have to oscillate forward and backward, alternatively. An innovative design of a microelectromagnetic Drive Module is proposed to make a Π-type thin disk reciprocally and efficiently rotate within a certain of angular interval. Twelve electromagnetic (EM) poles, with iron cores at the center and wound by electroplated copper wires, enclosing the thin disk are designed to provide the magnetic Drive power. An isotropic etching technique is employed to fabricate the high-aspect-ratio trench, housing of the follow-up electroplated copper, so that the contact angle of wire against the trench can be increased and the potential defect of cavities and pores within the wire can be prevented. On the other hand, a Π-type thin disk, with a central bearing and a set of auxiliary bushings, is designed to conduct the pitch motion as an angular excitation, in addition to spinning, is exerted on the gyroscope. That is, the angular motion of the disk is two-dimensional: spinning, Driven by the EM poles, and tilting, to respond to the exerted angular rate due to Coriolis effect. The efficacy of the micromagnetic Drive Module is verified by theoretical analysis and computer simulations by the commercial software, Ansoft Maxewll. In comparison to the conventional planar windings in microscale systems, the magnetic Drive force is increased by 150%.
Wu Jingyue - One of the best experts on this subject based on the ideXlab platform.
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improve single phase vienna rectifier mid point voltage unbalance s rectifier circuit
2016Co-Authors: Kang Longyun, Ping Teng, Li Pei-zhen, Wu JingyueAbstract:The utility model discloses an improve single -phase vienna rectifier mid point voltage unbalance's rectifier circuit, including a LC controlable electric current, the 2nd LC controlable electric current, sampling circuit, auxiliary power supply Module, single -chip computer control Module and Drive Module, sampling circuit gathers the upper portion mid point current potential un1 and the lower part mid point current potential un2 of the rectifier output of single -phase vienna, single -chip computer control Module calculates back outlet driving signal to Drive Module, the Drive signal of Drive Module output transmits respectively to a LC controlable electric current, the 2nd LC controlable electric current, change a LC controlable electric current, the 2nd LC controlable electric current move the phase angle, then make un1 through the negative feedback, un2 automatically regulated, compensate the unbalanced mid point voltage of single -phase vienna rectifier, until the balance. The utility model discloses a rectifier circuit adjusts output capacitance access value in real time, reaches the effect of automatic compensation mid point current potential, has effectively solved vienna rectifier circuit's the unbalanced problem of mid point current potential.
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improve vienna rectifier mid point voltage unbalance s rectifier circuit
2016Co-Authors: Kang Longyun, Wu Jingyue, Li Pei-zhen, Wang ShubiaoAbstract:The utility model discloses an improve vienna rectifier mid point voltage unbalance's rectifier circuit, including a LC controlable electric current, the 2nd LC controlable electric current, sampling circuit, auxiliary power supply Module, single -chip?computer?control?Module and Drive Module, sampling circuit gathers the upper portion mid point current potential un1 of vienna rectifier output, the lower part mid point current potential un2 of vienna rectifier output, single -chip?computer?control?Module is outlet driving signal to Drive Module in view of the above, the Drive signal of Drive Module output transmits respectively to a LC controlable electric current, the 2nd LC controlable electric current, change a LC controlable electric current, the 2nd LC controlable electric current move the phase angle, make un1 through the negative feedback, un2 automatically regulated, the unbalanced mid point voltage of compensation vienna rectifier, until the balance. The utility model discloses a rectifier circuit, the real time control LC controlable electric current move the phase angle, compensate unbalanced mid point voltage, realize the function of the automatically regulated mid point balance of voltage.
Kang Longyun - One of the best experts on this subject based on the ideXlab platform.
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improve single phase vienna rectifier mid point voltage unbalance s rectifier circuit
2016Co-Authors: Kang Longyun, Ping Teng, Li Pei-zhen, Wu JingyueAbstract:The utility model discloses an improve single -phase vienna rectifier mid point voltage unbalance's rectifier circuit, including a LC controlable electric current, the 2nd LC controlable electric current, sampling circuit, auxiliary power supply Module, single -chip computer control Module and Drive Module, sampling circuit gathers the upper portion mid point current potential un1 and the lower part mid point current potential un2 of the rectifier output of single -phase vienna, single -chip computer control Module calculates back outlet driving signal to Drive Module, the Drive signal of Drive Module output transmits respectively to a LC controlable electric current, the 2nd LC controlable electric current, change a LC controlable electric current, the 2nd LC controlable electric current move the phase angle, then make un1 through the negative feedback, un2 automatically regulated, compensate the unbalanced mid point voltage of single -phase vienna rectifier, until the balance. The utility model discloses a rectifier circuit adjusts output capacitance access value in real time, reaches the effect of automatic compensation mid point current potential, has effectively solved vienna rectifier circuit's the unbalanced problem of mid point current potential.
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improve vienna rectifier mid point voltage unbalance s rectifier circuit
2016Co-Authors: Kang Longyun, Wu Jingyue, Li Pei-zhen, Wang ShubiaoAbstract:The utility model discloses an improve vienna rectifier mid point voltage unbalance's rectifier circuit, including a LC controlable electric current, the 2nd LC controlable electric current, sampling circuit, auxiliary power supply Module, single -chip?computer?control?Module and Drive Module, sampling circuit gathers the upper portion mid point current potential un1 of vienna rectifier output, the lower part mid point current potential un2 of vienna rectifier output, single -chip?computer?control?Module is outlet driving signal to Drive Module in view of the above, the Drive signal of Drive Module output transmits respectively to a LC controlable electric current, the 2nd LC controlable electric current, change a LC controlable electric current, the 2nd LC controlable electric current move the phase angle, make un1 through the negative feedback, un2 automatically regulated, the unbalanced mid point voltage of compensation vienna rectifier, until the balance. The utility model discloses a rectifier circuit, the real time control LC controlable electric current move the phase angle, compensate unbalanced mid point voltage, realize the function of the automatically regulated mid point balance of voltage.
