Position control of a pneumatic cylinder actuator using modified PWM algorithm

Abstract

Pneumatic cylinders are used as actuators for modern automated systems in many industries applications for their numerous advantages. Basically, those applications are implemented using components such as proportional and servo pneumatic control valves that are relatively expensive because of their high accuracy even in applications that do not require such high accuracy. Recently, binary (on/off) solenoid directional control valves (DCVs) have been used to replace many of the expensive components and consequently reduce the system cost with achieving acceptable accuracy. This paper presents a control