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Accurate Sliding-Mode Control of Pneumatic Systems Using Low-Cost Solenoid Valves

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4 Author(s)
Nguyen, T. ; Dept. of Mech. & Aerosp. Eng., California Univ., Irvine, CA ; Leavitt, J. ; Jabbari, F. ; Bobrow, J.E.

A control law is developed for an inexpensive pneumatic motion control system using four solenoid on/off valves and a position feedback sensor. A sliding-mode approach is used, which is well known for its tolerance for system uncertainties. In contrast to previous control laws, our approach does not use pulsewidth modulation. The control law has an energy-saving mode that saves electrical power, reduces chattering, and prolongs the valve's life. Our simulation and experimental results show that the proposed tracking control law performs very well with good tracking and relatively low steady-state position errors

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Mechatronics, IEEE/ASME Transactions on  (Volume:12 ,  Issue: 2 )