Constant Value Adjusting Method Based on Characteristic Parameters of Process

This paper presents a new method to solve the problem of speed and pressure constant value adjustment in the high-power hydraulic pumps and hydraulic motors performance test system which is based on energy recycling technology. The constant value control method is designed based on characteristic parameters of the process, including control resolution, overshoot and adjustment time. Experiments were implemented to verify the effectiveness of the proposed method. Experimental result shows that the proposed method reduced the test time by about 52.4% than before. The convergence rate of the constant value adjusting process and the test efficiency are significantly improved by the proposed method.