Automatic Control of Mechanical Operation Position of Hydraulic Cylinders Under Digital Twins
The nonlinear characteristics of the hydraulic cylinder mechanical system are complex,the mechanical oper-ation behavior characteristics are unclear,and there are deviations in the position control results.Therefore,a digital twin based automatic control method for the mechanical operation position of hydraulic cylinders is proposed.Contin-uously detect the operating status of the hydraulic cylinder mechanical system,construct a nonlinear state equation,compare the differences between actual measurement data and output data,select RBF kernel function and support vector machine,describe the changes in mechanical operation position,describe the characteristics of mechanical oper-ation behavior,establish a position control objective function,automatically update the position point corresponding to the highest fitness value to the replica position point,and introduce cat swarm algorithm to solve the objective func-tion,update the global optimal solution of the position control objective function to achieve automatic control of the mechanical operation position of the hydraulic cylinder.The experimental results show that after the application of the proposed method,the deviation between the displacement detection curve and the actual displacement curve is small,and the steady-state error of displacement is small under both constant load and variable load conditions.This indicates that the automatic control results of the mechanical operation position have high accuracy,control efficiency,and control accuracy.
digital twin technologyhydraulic cylindermechanical operation positionautomatic controlRBF kernel function
NETL
NSTL
万方数据
维普
