空気圧モータを用いた高速位置決め制御

概要

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There has been little study on the control system with pneumatic motors although pneumatic motors have some advantages : they are smaller and safer during times of overload than electric motors, cleaner than hydraulic motors and they have less effect of air compressibility than pneumatic cylinders because of smaller gass volume. The purpose of this study is to investigate whether pneumatic motors can be used in a high speed positioning. The pneumatic servo system tested in this study consists of a cart, a vane type or a radial piston type pneumatic motor, two electro-pneumatic proportional pressure control valves and a personal computer PC-9801RA. The results obtained can be summarized as follows. Posicast control scheme can give higher speed positioning than PID control scheme. The vane type pneumatic motor is better for a position control because its characteristics is not affected by a temperature compared to the radial piston type. The settling time of 0.6 second was obtained when the posicast position control was tested for the desired position of 1.4 m with the vane type motor. Thus we attained our desired end ; the average positioning speed higher than 2 m/s.
岡山理科大学の論文