The Experts below are selected from a list of 128382 Experts worldwide ranked by ideXlab platform

Chen-hua Yeow - One of the best experts on this subject based on the ideXlab platform.

  • Soft printable Pneumatics for wrist rehabilitation
    Biosystems and Biorobotics, 2017
    Co-Authors: Hong Kai Yap, H.y. Ng, Chen-hua Yeow
    Abstract:

    Stroke is a leading cause of disability worldwide. Rehabilitation is necessary to recover from such disability. However due to growing manpower constraints and greying populations, patients receive limited rehabilitative care. In recent years, soft robotics is slowly becoming more popular as a choice of technology for robot-assisted rehabilitation. Traditional methods of fabricating soft actuators typically require the use of mold-casting, which is a multi-step process. Therefore, this work aimed to adopt a single-step printable Pneumatics technique to fabricate soft bending actuators for wrist rehabilitation. The printed pneumatic actuator showed increased bending curvature and force output with greater input air pressure. Based on our preliminary testing, we found that the soft wrist rehabilitation device, based on soft actuators developed using a printable Pneumatics approach, is able to guide the wrist model and the human wrist through flexion-extension motions.

  • A pressure-redistributing insole using soft sensors and actuators
    Proceedings - IEEE International Conference on Robotics and Automation, 2015
    Co-Authors: J. H. Low, Phone May Khin, Chen-hua Yeow
    Abstract:

    Soft robotics has garnered great research interest from robotics community due to their compliant control as compared to normal hard rigid robots. Particularly, these soft actuators only involve simple design of pneumatic channels to generate required actuation and are usually powered by Pneumatics or hydraulics. These actuators are usually lightweight, inexpensive and easily fabricated with soft lithography technique. In this paper, we present a different application of soft robotics in shoe insole design that involves simple design and control. To our knowledge, this is the first study to design soft sensors and actuators which aim to redistribute the plantar pressure and eventually tackle foot problems such as ulcers and blisters. The abnormal, high repetitive stresses acting on the foot tissues can cause immediate breakdown of foot tissues, which will lead to ulcers and even a serious pathology that require foot amputation. A mold with a peripheral pneumatic ring channel feature was designed using computer-aided drawing and thereafter 3D-printed. Subsequently, elastomeric material was poured into the mold and cured to create a negative replica of the mold, which is then sealed using another 2mm layer of elastomeric material. Upon pressurization, the pneumatic channel embedded in the actuator will inflate in the regions that are most compliant and cushion the plantar soft tissues as well as reduce the peak plantar pressure. © 2015 IEEE.

  • A Pressure - Redistributing Insole using Soft Sensors and Actuators *
    IEEE Conference on Robotics and Automation, 2015
    Co-Authors: J. H. Low, Phone May Khin, Chen-hua Yeow
    Abstract:

    — Soft robotics has garnered great research interest from robotics community due to their compliant control as compared to normal hard rigid robots. Particularly, these soft actuators only involve simple design of pneumatic channels to generate required actuation and are usually powered by Pneumatics or hydraulics. These actuators are usually lightweight, inexpensive and easily fabricated with soft lithography technique. In this paper, we present a different application of soft robotics in shoe insole design that involves simple design and control. To our knowledge, this is the first study to design soft sensors and actuators which aim to redistribute the plantar pressure and eventually tackle foot problems such as ulcers and blisters. The abnormal, high repetitive stresses acting on the foot tissues can cause immediate breakdown of foot tissues, which will lead to ulcers and even a serious pathology that require foot amputation. A mold with a peripheral pneumatic ring channel feature was designed using computer-aided drawing and thereafter 3D-printed. Subsequently, elastomeric material was poured into the mold and cured to create a negative replica of the mold, which is then sealed using another 2mm layer of elastomeric material. Upon pressurization, the pneumatic channel embedded in the actuator will inflate in the regions that are most compliant and cushion the plantar soft tissues as well as reduce the peak plantar pressure.

J. H. Low - One of the best experts on this subject based on the ideXlab platform.

  • A pressure-redistributing insole using soft sensors and actuators
    Proceedings - IEEE International Conference on Robotics and Automation, 2015
    Co-Authors: J. H. Low, Phone May Khin, Chen-hua Yeow
    Abstract:

    Soft robotics has garnered great research interest from robotics community due to their compliant control as compared to normal hard rigid robots. Particularly, these soft actuators only involve simple design of pneumatic channels to generate required actuation and are usually powered by Pneumatics or hydraulics. These actuators are usually lightweight, inexpensive and easily fabricated with soft lithography technique. In this paper, we present a different application of soft robotics in shoe insole design that involves simple design and control. To our knowledge, this is the first study to design soft sensors and actuators which aim to redistribute the plantar pressure and eventually tackle foot problems such as ulcers and blisters. The abnormal, high repetitive stresses acting on the foot tissues can cause immediate breakdown of foot tissues, which will lead to ulcers and even a serious pathology that require foot amputation. A mold with a peripheral pneumatic ring channel feature was designed using computer-aided drawing and thereafter 3D-printed. Subsequently, elastomeric material was poured into the mold and cured to create a negative replica of the mold, which is then sealed using another 2mm layer of elastomeric material. Upon pressurization, the pneumatic channel embedded in the actuator will inflate in the regions that are most compliant and cushion the plantar soft tissues as well as reduce the peak plantar pressure. © 2015 IEEE.

  • A Pressure - Redistributing Insole using Soft Sensors and Actuators *
    IEEE Conference on Robotics and Automation, 2015
    Co-Authors: J. H. Low, Phone May Khin, Chen-hua Yeow
    Abstract:

    — Soft robotics has garnered great research interest from robotics community due to their compliant control as compared to normal hard rigid robots. Particularly, these soft actuators only involve simple design of pneumatic channels to generate required actuation and are usually powered by Pneumatics or hydraulics. These actuators are usually lightweight, inexpensive and easily fabricated with soft lithography technique. In this paper, we present a different application of soft robotics in shoe insole design that involves simple design and control. To our knowledge, this is the first study to design soft sensors and actuators which aim to redistribute the plantar pressure and eventually tackle foot problems such as ulcers and blisters. The abnormal, high repetitive stresses acting on the foot tissues can cause immediate breakdown of foot tissues, which will lead to ulcers and even a serious pathology that require foot amputation. A mold with a peripheral pneumatic ring channel feature was designed using computer-aided drawing and thereafter 3D-printed. Subsequently, elastomeric material was poured into the mold and cured to create a negative replica of the mold, which is then sealed using another 2mm layer of elastomeric material. Upon pressurization, the pneumatic channel embedded in the actuator will inflate in the regions that are most compliant and cushion the plantar soft tissues as well as reduce the peak plantar pressure.

Y Ge - One of the best experts on this subject based on the ideXlab platform.

  • real gas effects on charging and discharging processes of high pressure Pneumatics
    Chinese Journal of Mechanical Engineering, 2013
    Co-Authors: Xuanyin Wang, Y Ge
    Abstract:

    The high pressure pneumatic system has been applied to special industries. It may cause errors when we analyze high pressure Pneumatics under ideal gas assumption. However, the real gas effect on the performances of high pressure Pneumatics is seldom investigated. In this paper, the real gas effects on air enthalpy and internal energy are estimated firstly to study the real gas effect on the energy conversion. Under ideal gas assumption, enthalpy and internal energy are solely related to air temperature. The estimation result indicates that the pressure enthalpy and pressure internal energy of real pneumatic air obviously decrease the values of enthalpy and internal energy for high pressure Pneumatics, and the values of pressure enthalpy and pressure internal energy are close. Based on the relationship among pressure, enthalpy and internal energy, the real gas effects on charging and discharging processes of high pressure Pneumatics are estimated, which indicates that the real gas effect accelerates the temperature and pressure decreasing rates during discharging process, and decelerates their increasing rates during charging process. According to the above analysis, and for the inconvenience in building the simulation model for real gas and the difficulty of measuring the detail thermal capacities of Pneumatics, a method to compensate the real gas effect under ideal gas assumption is proposed by modulating the thermal capacity of the pneumatic container in simulation. The experiments of switching expansion reduction (SER) for high pressure Pneumatics are used to verify this compensating method. SER includes the discharging process of supply tanks and the charging process of expansion tank. The simulated and experimental results of SER are highly consistent. The proposed compensation method provides a convenient way to obtain more realistic simulation results for high pressure Pneumatics.

  • Real gas effects on charging and discharging processes of high pressure Pneumatics
    Chinese Journal of Mechanical Engineering (English Edition), 2013
    Co-Authors: Xiaohua Wang, Y Ge
    Abstract:

    The high pressure pneumatic system has been applied to special industries. It may cause errors when we analyze high pressure Pneumatics under ideal gas assumption. However, the real gas effect on the performances of high pressure Pneumatics is seldom investigated. In this paper, the real gas effects on air enthalpy and internal energy are estimated firstly to study the real gas effect on the energy conversion. Under ideal gas assumption, enthalpy and internal energy are solely related to air temperature. The estimation result indicates that the pressure enthalpy and pressure internal energy of real pneumatic air obviously decrease the values of enthalpy and internal energy for high pressure Pneumatics, and the values of pressure enthalpy and pressure internal energy are close. Based on the relationship among pressure, enthalpy and internal energy, the real gas effects on charging and discharging processes of high pressure Pneumatics are estimated, which indicates that the real gas effect accelerates the temperature and pressure decreasing rates during discharging process, and decelerates their increasing rates during charging process. According to the above analysis, and for the inconvenience in building the simulation model for real gas and the difficulty of measuring the detail thermal capacities of Pneumatics, a method to compensate the real gas effect under ideal gas assumption is proposed by modulating the thermal capacity of the pneumatic container in simulation. The experiments of switching expansion reduction (SER) for high pressure Pneumatics are used to verify this compensating method. SER includes the discharging process of supply tanks and the charging process of expansion tank. The simulated and experimental results of SER are highly consistent. The proposed compensation method provides a convenient way to obtain more realistic simulation results for high pressure Pneumatics. © Chinese Mechanical Engineering Society and Springer-Verlag Berlin Heidelberg 2013.

Phone May Khin - One of the best experts on this subject based on the ideXlab platform.

  • A pressure-redistributing insole using soft sensors and actuators
    Proceedings - IEEE International Conference on Robotics and Automation, 2015
    Co-Authors: J. H. Low, Phone May Khin, Chen-hua Yeow
    Abstract:

    Soft robotics has garnered great research interest from robotics community due to their compliant control as compared to normal hard rigid robots. Particularly, these soft actuators only involve simple design of pneumatic channels to generate required actuation and are usually powered by Pneumatics or hydraulics. These actuators are usually lightweight, inexpensive and easily fabricated with soft lithography technique. In this paper, we present a different application of soft robotics in shoe insole design that involves simple design and control. To our knowledge, this is the first study to design soft sensors and actuators which aim to redistribute the plantar pressure and eventually tackle foot problems such as ulcers and blisters. The abnormal, high repetitive stresses acting on the foot tissues can cause immediate breakdown of foot tissues, which will lead to ulcers and even a serious pathology that require foot amputation. A mold with a peripheral pneumatic ring channel feature was designed using computer-aided drawing and thereafter 3D-printed. Subsequently, elastomeric material was poured into the mold and cured to create a negative replica of the mold, which is then sealed using another 2mm layer of elastomeric material. Upon pressurization, the pneumatic channel embedded in the actuator will inflate in the regions that are most compliant and cushion the plantar soft tissues as well as reduce the peak plantar pressure. © 2015 IEEE.

  • A Pressure - Redistributing Insole using Soft Sensors and Actuators *
    IEEE Conference on Robotics and Automation, 2015
    Co-Authors: J. H. Low, Phone May Khin, Chen-hua Yeow
    Abstract:

    — Soft robotics has garnered great research interest from robotics community due to their compliant control as compared to normal hard rigid robots. Particularly, these soft actuators only involve simple design of pneumatic channels to generate required actuation and are usually powered by Pneumatics or hydraulics. These actuators are usually lightweight, inexpensive and easily fabricated with soft lithography technique. In this paper, we present a different application of soft robotics in shoe insole design that involves simple design and control. To our knowledge, this is the first study to design soft sensors and actuators which aim to redistribute the plantar pressure and eventually tackle foot problems such as ulcers and blisters. The abnormal, high repetitive stresses acting on the foot tissues can cause immediate breakdown of foot tissues, which will lead to ulcers and even a serious pathology that require foot amputation. A mold with a peripheral pneumatic ring channel feature was designed using computer-aided drawing and thereafter 3D-printed. Subsequently, elastomeric material was poured into the mold and cured to create a negative replica of the mold, which is then sealed using another 2mm layer of elastomeric material. Upon pressurization, the pneumatic channel embedded in the actuator will inflate in the regions that are most compliant and cushion the plantar soft tissues as well as reduce the peak plantar pressure.

Xiaohua Wang - One of the best experts on this subject based on the ideXlab platform.

  • Real gas effects on charging and discharging processes of high pressure Pneumatics
    Chinese Journal of Mechanical Engineering (English Edition), 2013
    Co-Authors: Xiaohua Wang, Y Ge
    Abstract:

    The high pressure pneumatic system has been applied to special industries. It may cause errors when we analyze high pressure Pneumatics under ideal gas assumption. However, the real gas effect on the performances of high pressure Pneumatics is seldom investigated. In this paper, the real gas effects on air enthalpy and internal energy are estimated firstly to study the real gas effect on the energy conversion. Under ideal gas assumption, enthalpy and internal energy are solely related to air temperature. The estimation result indicates that the pressure enthalpy and pressure internal energy of real pneumatic air obviously decrease the values of enthalpy and internal energy for high pressure Pneumatics, and the values of pressure enthalpy and pressure internal energy are close. Based on the relationship among pressure, enthalpy and internal energy, the real gas effects on charging and discharging processes of high pressure Pneumatics are estimated, which indicates that the real gas effect accelerates the temperature and pressure decreasing rates during discharging process, and decelerates their increasing rates during charging process. According to the above analysis, and for the inconvenience in building the simulation model for real gas and the difficulty of measuring the detail thermal capacities of Pneumatics, a method to compensate the real gas effect under ideal gas assumption is proposed by modulating the thermal capacity of the pneumatic container in simulation. The experiments of switching expansion reduction (SER) for high pressure Pneumatics are used to verify this compensating method. SER includes the discharging process of supply tanks and the charging process of expansion tank. The simulated and experimental results of SER are highly consistent. The proposed compensation method provides a convenient way to obtain more realistic simulation results for high pressure Pneumatics. © Chinese Mechanical Engineering Society and Springer-Verlag Berlin Heidelberg 2013.