Design and performance analysis of hybrid fuzzy robust controller for hydraulic system against variable loads

The continuous motion of hydraulic implements in industrial is important parameters which affect productivity of mould casting machine. A lab setup is designed to evaluate a position control technique of a hydraulic cylinder at different load patterns. The lab setup consists of two loops, the first loop represents the controlled cylinder and the second loop represents the control of the loading cylinder. Robust and hybrid fuzzy robust controllers are developed to reduce the synchronization errors in cylinders positions to acceptable values. The second loop is controlled so that simulates variable loads with different pattern. A model representing the lab setup is developed and the system response is verified using experimental results.