Pressure estimation of pneumatic anti-vibration apparatuses using an identity observer

This paper considers the parameter tuning of the identity observer and the implementation method of the estimated pressure feedback for a pneumatic anti-vibration apparatus. To tune the observer´s parameters efficiently, the number of parameters is reduced by equivalent transformation of the block diagram of the observer. The pole assignment of the observer is verified based on the time response of the position error. Moreover, by considering the saturation of output voltage of the driver circuit, estimation error is reduced. Experimental results show the effectiveness of the proposed method.