Xianghua He
ABSTRACT
Pipe pile feeder machine is an important production equipment on the concrete pipe pile production line which is a mechanism-electricity-hydraulic integrated product, and mixing electro-hydraulic system is an important part of the pipe pile feeder machine. In this paper, AMESim simulation model of the mixing electro-hydraulic system is built. The simulation results show that the speed, pressure and torque of the mixing beater are basically stable and are within the reasonable design range, so as to verify the rationality of the system. However, due to the large inertia, coupling factors and nonlinearity of the system in the directional valve, overadjustment of these parameters when the system starts is relatively large. In order to improve the control accuracy of the system, PID control algorithm of AMESim and MATLAB is used to study the system speed, pressure and torque control characteristics. Simulation results show that PID control can reduce the dynamic characteristics compared to conventional open-loop control. The research method of this paper is also of certain reference significance for other industries with similar functions or similar structures.
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