Journal
CONTROL ENGINEERING PRACTICE
Volume 9, Issue 4, Pages 449-457Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0967-0661(00)00122-2
Keywords
air motor; PID control; pneumatic H-bridge; real-time control; speed control
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This paper presents an investigation into the real-time control of an air motor using the concept of a pneumatic equivalent of the electric H-bridge. A radial piston air motor is considered, ii pneumatic H-bridge is developed allowing speed and direction control of the motor. A PID control strategy is adopted to control the motor speed. The control strategy is tested by controlling the motor at high and low speeds. Experimental results show that a good level of speed control of the motor is achieved, and that both speed and direction control of the motor is feasible in real time with the pneumatic H-bridge concept. (C) 2001 Elsevier Science Ltd. All rights reserved.
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