Development and Analysis of Small-Sized Quasi-Servo Valve for Flexible Bending Actuator(Mechanical Systems)

Zhao, Fang; Dohta, Shujiro; Akagi, Tetsuya

doi:10.1299/kikaic.76.3665

Cited by 34 publications

(27 citation statements)

References 4 publications

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“…The size of the on/off valve is 12×33×7mm, and the mass is only 6g. The previous on/off valve (Koganei Co. Ltd., G010HE-1) was 33×20×10mm, and the mass was 15g [6]. The proposed valve is 58% smaller and 60% lighter than the previous valve.…”

Section: Introductionmentioning

confidence: 88%

“…Therefore, we aim to develop a compact and low-cost servo valve and a wearable actuator built-in sensor. In our previous studies [6] to [8], a small-sized, light-weight and inexpensive pressure control type quasi-servo valve which consists of two on/off control valves using a low-cost embedded controller and a pressure transducer was proposed and tested. In this paper, a quasi-servo valve by using the much smaller, lighter and inexpensive on/off control valves is produced and tested.…”

Section: Introductionmentioning

confidence: 99%

“…The valve consists of two on/off control valves (SMC Co. Ltd., S070C-SDG-32) whose both output ports are connected to each other. One valve is used as a switching valve to supply or exhaust, and the other is used as a PWM control valve that can adjust output flow rate like a variable fluid resistance [6]. The size of the on/off valve is 12×33×7mm, and the mass is only 6g.…”

Section: Introductionmentioning

confidence: 99%

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Miniaturization of a Quasi-Servo Valve and Its Application to Positon Control of a Rubber Artificial Muscle with Built-in Sensor

et al. 2016

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Abstract. Nowadays, the care and welfare pneumatic devices to support a nursing care and a self-reliance of the elderly and the disabled are actively researched and developed by many researchers. These wearable devices require many actuators and control valves for multi degrees of freedom. The total weight and volume of the wearable devices increases according to the degree of freedom. Our final goal is to develop a compact wearable actuator with built-in sensor, controller and control valve and to apply it to a wearable assisted device. In our previous study, a small-sized quasi-servo valve which consists of two on/off control valves and an embedded controller was developed. In this study, the quasi-servo valve composing of much smaller-sized (40% in mass, 42% in volume) on/off valves is proposed and tested. In addition, the rubber artificial muscle with an ultrasonic sensor as a built-in displacement sensor is proposed and a position control of the muscle is carried out using the tested tiny valve and built-in sensor. As a result, it was confirmed that the position control of the muscle can be realized using the tested ultrasonic sensor.

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Section: Introductionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Miniaturization of a Quasi-Servo Valve and Its Application to Positon Control of a Rubber Artificial Muscle with Built-in Sensor

et al. 2016

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“…The patient also holds the handle while working. In order to realize a wearable and portable device, the attitude control system that consists of an embedded controller (Renesas Co. Ltd., SH7125) and six quasi-servo valves [12] are mounted on the device. The quasi-servo valve consists of two on/off type valves.…”

Section: Flexible Pneumatic Cylinder and Wearable Wrist Rehabilitatiomentioning

confidence: 99%

Improvement of Wearable Wrist Rehabilitation Device Using Flexible Pneumatic Cylinders

et al. 2016

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Abstract. In the condition of the insufficient number of PT, the novel wearable rehabilitation devices using a soft pneumatic actuator for the elderly are actively proposed and developed. In the previous study, a wearable wrist rehabilitation device based on a flexible robot arm using three flexible pneumatic cylinders was proposed and tested. In this study, the improvement of the device is carried out so as to use it without limitation of attitude of patient's arm. The attitude control of the improved device based on the analytical model is also carried out. As a result, it is confirmed that the device can give the motion to patients with any attitude of their arm according to the desired position.

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“…from the center of the disk. The device also has the attitude control system that consists of an embedded controller (Renesas Co. Ltd., SH7125) and six quasi-servo valves [9] that each valve consists of two on/off control valves. The embedded controller and three quasi-servo valves are mounted on the base stage.…”

Section: Introductionmentioning

confidence: 99%

Development of Wearable Wrist Rehabilitation Device Using Flexible Pneumatic Cylinders

Kato

Dohta

Akagi

et al. 2016

MATEC Web of Conferences

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Abstract.Recently, the rehabilitation device using a soft pneumatic actuator for disabled are actively researched and developed because of the insufficient number of PT. In the previous study, the wrist rehabilitation device using flexible robot arm that consisted of three flexible pneumatic cylinders was proposed and tested. In this study, the wearable wrist rehabilitation device is proposed and tested. The attitude control based on the analytical model of the devise is also carried out. As a result, it is confirmed that the device can trace the desired position in the condition when a human wears the device.

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Development and Analysis of Small-Sized Quasi-Servo Valve for Flexible Bending Actuator(Mechanical Systems)

Cited by 34 publications

References 4 publications

Miniaturization of a Quasi-Servo Valve and Its Application to Positon Control of a Rubber Artificial Muscle with Built-in Sensor

Miniaturization of a Quasi-Servo Valve and Its Application to Positon Control of a Rubber Artificial Muscle with Built-in Sensor

Improvement of Wearable Wrist Rehabilitation Device Using Flexible Pneumatic Cylinders

Development of Wearable Wrist Rehabilitation Device Using Flexible Pneumatic Cylinders

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