Design On Software System And Optimization On Control System For T-shaped Guide Rail's Anti-bend Straightening

Elevator guide rail is an important indemnification for the safety and comfort of elevator. And the linearity error is a key indicator in many quality indicators of elevator guide rail. At present,the backward process of the domestic elevator guide rail manufacturers is a big obstacle for improving the linearity as well as the development of their own. In the background, this thesis study the software system, optimize the control system and achieve the automation of anti-bend straightening for the T-guide rail. So as to enhance the accuracy and efficiency of straightening.The chapters and main content of this thesis are as follows.Based on the background of this subject,chapter one introduces the production process and the straightening technology in the domestic and abroad at present.Also the development of industrial automation software system and the main content of this thesis are presented.Chapter two describes several typical straightening methods and analyzes the demands of the straightening machine, anti-bend principle and elastic-plastic theory model for the T-guide rail.Also the hardware system and software system are designed,and the overall solution for software system is especially analyzed.In chapter three,the details of each function for software system are designed. Including the data communication,acquisition for straightening stroke,establishment of database, real-time monitoring and self-learning function for the software system.Chapter four establishes the hydraulic servo control system model based on elastic load and finishes the parameters optimization and simulation of PID control system. Then the high-speed counter position control and PID control of the control system are compared.Chapter five describes the development environment for software system,achieves all the functional modules and carries on the straightening test based on them.Chapter six researches on the controllable and uncontrollable factors in straightening process.Besides,the orthogonal experimental design is carried out based on controllable factors and the influence of each factor is obtained.Finally,the communications interference,hydraulic cylinder crawling, straightening errors and other issues encountered in the process of the straightening are analyzed. Chapter seven brings out the summary and outlook of this thesis.what's more, a further research work is prospected.