Study And Simulation Of Leaf Spring Forming Electro-hydraulic Servo System Based On Neural Network

With the fast development of domestic auto industry, the demand of taper leaf spring becomes stronger. But now its production can not meet the requirement of the market because of the limitation of equipment and technology. The key and difficulty in the production of taper leaf spring is to control the coordinated movement of rollers in order to gain ideal shape.In this paper the forming technology of the leaf spring is analyzed. Combined with the practical equipment, the forming technology of one-pass rolling is put forward, and the theoretical analysis and the math- model are made. The electro hydraulic servo control system and its correlative math-model used for the technology are designed. According to applied characteristics system, the math-model is simplified, the stability and the error are analyzed. The electro-hydraulic servo control system of leaf spring forming controlled intelligently by PID neural network was made. At last, the experiment of the one-pass rolling technology is simulated.Single-variable and two-variable PID neural network control system are divided in the light of characteristics of electro-hydraulic servo system, in which the system organization, the algorithm and the system stability are analyzed separately. The improved algorithm and the simulation program are made on Matlab software. According to the theoretical diagram, the servo control system of leaf spring forming controlled by neural network was designed, so that it's realizable to make rollers move matched.The simulations of electro-hydraulic servo control system based on neural network are made in the case of single-variable and two-variables. MATLAB7.0 is applied to simulate and study the disturbance which exerted on the controller output. According to the simulation of one-pass rolling electro-hydraulic servo control system based on neural network, the one-pass rolling technology is proved to be right and can meet the need of precision.This research, which improves the productivity and the quality and strengthens its competitive power in the field, has its significance in theory and practice.