Design Of Servo System For Straightening Machine Based On Chaotic Particle Swarm

In view of servo pressure system’s existing problem of full hydraulic straightening machine in response speed, control precision and intelligence which are difficult to meet the higher requirments of iron and steel enterprises, the study focuses on the plate straightening machine of hydraulic pressure system, using the PID optimization algorithm which is based on chaos particle swarm optimization to optimize the design of servo control system.In order to meet the needs of the control algorithm, we upgrading the controller of straightening machine servo pressure system, which add FM458 module in the original PLC controller to realize the control algorithm of the system. The design of software part is designing the control algorithm, construction of the roller plate straightening machine hydraulic servo pressure mathematical model, proposeding the chaos particle swarm optimization algorithm based on improved PID on the basis of the traditional PID control algorithm. Through the simulation of Matlab display, the control effect of this algorithm are improved, compared with the simple PID control algorithm, the control effect of the pressure system are improved in terms of speed and accuracy, servo control system to regulate the time is reduced by 30% the dynamic error is about 0.1mm. For the four-cylinder hydraulic pressure system synchronization, using the "two main two from" programs to ensure system synchronization accuracy. By comparing the experimental data, synchronous displacement error that system’s maximum is 0.23 mm, the steady-state error is 0.06 mm.Compared with the traditional control algorithm used in previous straightening machine, the system has increased in rapidity, precision, synchronization aspects than conventional control system. it can be used in industrial practice straightening control.