The Experts below are selected from a list of 141 Experts worldwide ranked by ideXlab platform
Liang Chang - One of the best experts on this subject based on the ideXlab platform.
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opamp sharing mdac design for pipelined Successive Stage of a 1 8v 80ms s 14 bit pipelined adc
International Conference on Anti-counterfeiting Security and Identification, 2012Co-Authors: Xian-zhong Guan, Honghui Deng, Liang ChangAbstract:A design of opamp-sharing multiplying digital-to-analog converter (MDAC) used in the Successive Stages of an 80MS/s 14-bit pipelined analog-to-digital converter (ADC) with 1.8V supply voltage is presented in this paper. Opamp-sharing structure of the paper is proposed to achieve low-power operation, and SC-CMFB (switch capacitor-common mode feedback) circuit further reduces power consumption. The gain-boost structure of the amplifier is used to meet the precision requirement of the MDAC. The memory effect is completely eliminated with clock-resetting phase. The circuit design is implemented in the Chartered 0.18um CMOS process and the simulation results show that the designed MDAC could meet performance requirements of the pipelined ADC, consuming 10.5mW power.
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Opamp-sharing MDAC design for pipelined Successive-Stage of a 1.8V 80MS/s 14-bit pipelined ADC
Anti-counterfeiting Security and Identification, 2012Co-Authors: Xian-zhong Guan, Honghui Deng, Liang ChangAbstract:A design of opamp-sharing multiplying digital-to-analog converter (MDAC) used in the Successive Stages of an 80MS/s 14-bit pipelined analog-to-digital converter (ADC) with 1.8V supply voltage is presented in this paper. Opamp-sharing structure of the paper is proposed to achieve low-power operation, and SC-CMFB (switch capacitor-common mode feedback) circuit further reduces power consumption. The gain-boost structure of the amplifier is used to meet the precision requirement of the MDAC. The memory effect is completely eliminated with clock-resetting phase. The circuit design is implemented in the Chartered 0.18um CMOS process and the simulation results show that the designed MDAC could meet performance requirements of the pipelined ADC, consuming 10.5mW power.
Xian-zhong Guan - One of the best experts on this subject based on the ideXlab platform.
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opamp sharing mdac design for pipelined Successive Stage of a 1 8v 80ms s 14 bit pipelined adc
International Conference on Anti-counterfeiting Security and Identification, 2012Co-Authors: Xian-zhong Guan, Honghui Deng, Liang ChangAbstract:A design of opamp-sharing multiplying digital-to-analog converter (MDAC) used in the Successive Stages of an 80MS/s 14-bit pipelined analog-to-digital converter (ADC) with 1.8V supply voltage is presented in this paper. Opamp-sharing structure of the paper is proposed to achieve low-power operation, and SC-CMFB (switch capacitor-common mode feedback) circuit further reduces power consumption. The gain-boost structure of the amplifier is used to meet the precision requirement of the MDAC. The memory effect is completely eliminated with clock-resetting phase. The circuit design is implemented in the Chartered 0.18um CMOS process and the simulation results show that the designed MDAC could meet performance requirements of the pipelined ADC, consuming 10.5mW power.
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Opamp-sharing MDAC design for pipelined Successive-Stage of a 1.8V 80MS/s 14-bit pipelined ADC
Anti-counterfeiting Security and Identification, 2012Co-Authors: Xian-zhong Guan, Honghui Deng, Liang ChangAbstract:A design of opamp-sharing multiplying digital-to-analog converter (MDAC) used in the Successive Stages of an 80MS/s 14-bit pipelined analog-to-digital converter (ADC) with 1.8V supply voltage is presented in this paper. Opamp-sharing structure of the paper is proposed to achieve low-power operation, and SC-CMFB (switch capacitor-common mode feedback) circuit further reduces power consumption. The gain-boost structure of the amplifier is used to meet the precision requirement of the MDAC. The memory effect is completely eliminated with clock-resetting phase. The circuit design is implemented in the Chartered 0.18um CMOS process and the simulation results show that the designed MDAC could meet performance requirements of the pipelined ADC, consuming 10.5mW power.
Junghui Chen - One of the best experts on this subject based on the ideXlab platform.
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pid based nonlinear processes control model uncertainty improvement by using gaussian process model
Journal of Process Control, 2016Co-Authors: Lester Lik Teck Chan, Tao Chen, Junghui ChenAbstract:Proportional-integral-derivative (PID) controller design based on the Gaussian process (GP) model is proposed in this study. The GP model, defined by its mean and covariance function, provides predictive variance in addition to the predicted mean. GP model highlights areas where prediction quality is poor, due to the lack of data, by indicating the higher variance around the predicted mean. The variance information is taken into account in the PID controller design and is used for the selection of data to improve the model at the Successive Stage. This results in a trade-off between safety and the performance due to the controller avoiding the region with large variance at the cost of not tracking the set point to ensure process safety. The proposed direct method evaluates the PID controller design by the gradient calculation. In order to reduce computation the characteristic of the instantaneous linearized GP model is extracted for a linearized framework of PID controller design. Two case studies on continuous and batch processes were carried out to illustrate the applicability of the proposed method.
Honghui Deng - One of the best experts on this subject based on the ideXlab platform.
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opamp sharing mdac design for pipelined Successive Stage of a 1 8v 80ms s 14 bit pipelined adc
International Conference on Anti-counterfeiting Security and Identification, 2012Co-Authors: Xian-zhong Guan, Honghui Deng, Liang ChangAbstract:A design of opamp-sharing multiplying digital-to-analog converter (MDAC) used in the Successive Stages of an 80MS/s 14-bit pipelined analog-to-digital converter (ADC) with 1.8V supply voltage is presented in this paper. Opamp-sharing structure of the paper is proposed to achieve low-power operation, and SC-CMFB (switch capacitor-common mode feedback) circuit further reduces power consumption. The gain-boost structure of the amplifier is used to meet the precision requirement of the MDAC. The memory effect is completely eliminated with clock-resetting phase. The circuit design is implemented in the Chartered 0.18um CMOS process and the simulation results show that the designed MDAC could meet performance requirements of the pipelined ADC, consuming 10.5mW power.
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Opamp-sharing MDAC design for pipelined Successive-Stage of a 1.8V 80MS/s 14-bit pipelined ADC
Anti-counterfeiting Security and Identification, 2012Co-Authors: Xian-zhong Guan, Honghui Deng, Liang ChangAbstract:A design of opamp-sharing multiplying digital-to-analog converter (MDAC) used in the Successive Stages of an 80MS/s 14-bit pipelined analog-to-digital converter (ADC) with 1.8V supply voltage is presented in this paper. Opamp-sharing structure of the paper is proposed to achieve low-power operation, and SC-CMFB (switch capacitor-common mode feedback) circuit further reduces power consumption. The gain-boost structure of the amplifier is used to meet the precision requirement of the MDAC. The memory effect is completely eliminated with clock-resetting phase. The circuit design is implemented in the Chartered 0.18um CMOS process and the simulation results show that the designed MDAC could meet performance requirements of the pipelined ADC, consuming 10.5mW power.
Carmen Gallo - One of the best experts on this subject based on the ideXlab platform.
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muscle ph rigor mortis and blood variables in atlantic salmon transported in two types of well boat
Veterinary Record, 2010Co-Authors: M C Gatica, Gustavo Monti, Toby G Knowles, Carmen GalloAbstract:Two systems for transporting live salmon ( Salmo salar ) were compared in terms of their effects on blood variables, muscle pH and rigor index: an 9open system9 well-boat with recirculated sea water at 13.5°C and a stocking density of 107 kg/m3 during an eight-hour journey, and a 9closed system9 well-boat with water chilled from 16.7 to 2.1°C and a stocking density of 243.7 kg/m3 during a seven-hour journey. Groups of 10 fish were sampled at each of four Stages: in cages at the farm, in the well-boat after loading, in the well-boat after the journey and before unloading, and in the processing plant after they were pumped from the resting cages. At each sampling, the fish were stunned and bled by gill cutting. Blood samples were taken to measure lactate, osmolality, chloride, sodium, cortisol and glucose, and their muscle pH and rigor index were measured at death and three hours later. In the open system well-boat, the initial muscle pH of the fish decreased at each Successive Stage, and at the final Stage they had a significantly lower initial muscle pH and more rapid onset of rigor than the fish transported on the closed system well-boat. At the final Stage all the blood variables except glucose were significantly affected in the fish transported on both types of well-boat.
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effects of well boat transportation on the muscle ph and onset of rigor mortis in atlantic salmon
Veterinary Record, 2008Co-Authors: M C Gatica, Gustavo Monti, Carmen Gallo, Toby G Knowles, P D WarrissAbstract:During the transport of salmon (Salmo salar), in a well-boat, 10 fish were sampled at each of six Stages: in cages after crowding at the farm (Stage 1), in the well-boat after loading (Stage 2), in the well-boat after eight hours transport and before unloading (Stage 3), in the resting cages immediately after finishing unloading (Stage 4), after 24 hours resting in cages, (Stage 5) and in the processing plant after pumping from the resting cages (Stage 6). The water in the well-boat was at ambient temperature with recirculation to the sea. At each Stage the fish were stunned percussively and bled by gill cutting. Immediately after death, and then every three hours for 18 hours, the muscle pH and rigor index of the fish were measured. At Successive Stages the initial muscle pH of the fish decreased, except for a slight gain in Stage 5, after they had been rested for 24 hours. The lowest initial muscle pH was observed at Stage 6. The fishes' rigor index showed that rigor developed more quickly at each Successive Stage, except for a slight decrease in rate at Stage 5, attributable to the recovery of muscle reserves.
