A Study on Power-Assisted Chair
Grant-in-Aid for Scientific Research (C)
|Allocation Type||Single-year Grants |
Intelligent mechanics/Mechanical systems
|Research Institution||Yokohama National University |
SANADA Kazushi Yokohama National University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (30187265)
|Project Period (FY)
1999 – 2000
Completed (Fiscal Year 2000)
|Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2000: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1999: ¥2,700,000 (Direct Cost: ¥2,700,000)
|Keywords||Assist / Welfare Apparatus / Control Engineering / Pneumatics / Human-Machine Systems / Behavior Model|
Financial Year 1999 :
(1) Design and manufacturing of a power-assisted chair
A pneumatic cylinder and a pneumatic proportional control valve were built into an assist-force actuator.
An assist controller was a personal computer with AD/DA converter.
A power-assisted chair was built up with the actuator and the controller.
(2) Virtual Spring
A new idea of virtual spring was proposed.
Financial Year 2000 :
(3) Improvement of virtual spring : total mode control
At the International Fluid Power Exhibition, the power-assisted chair was demonstrated. Valuable comments were obtained.
*Virtual spring characteristics could be different between standing-up and sitting-down motions.
*The seat could be locked for supporting a fully standing body.
*Reducing shock when sitting down suddenly.
To improve the virtual spring with respect to the above comments, a total mode control technique was proposed which combined standing-up and sitting-down control modes.
Report (3 results)
Research Products (18 results)