Research on PID Control Strategy of Power Head Propulsion System of Engineering Hydraulic Drilling Rig

Abstract

Abstract A mechanical model of the synchronous hydraulic system of the propulsion mechanism is established by taking the power head propulsion system of an engineering hydraulic drilling rig as the research subject. A master-slave regulation method based on the PID control strategy is proposed for the displacement deviation of two synchronous cylinders under the disturbance of external force. The method controls the synchronous accuracy of the two propulsion cylinders. Joint modeling and simulation with AMEsim and MATLAB are used to investigate the control performance of this synchronously controlled hydraulic cylinder under the disturbance of external forces. The results show that the system is subjected to an external load and cylinder 1 stabilizes after t=0.17s, and the synchronous control error between cylinder 1 and the expected value is 0.0005m. The stabilization error between cylinder 2 and cylinder 1 is 0.0006m; the power head propulsion system achieves the accuracy required for engineering construction and meets the working requirements of the engineering hydraulics drilling rig for the power head propulsion system.