Research On AC Servo Control Strategy Of Bevel Gear Grinding Machine

As the spur gear in the transmission,the number of meshing teeth less,easy to produce impact,resulting in transm ission noise,not stab le.And the bevel gear in the transm ission gear meshing coincidence coefficient is much higher than the spur gear,so the bevel gear in the transmission shows low noise,smooth and high carrying capacity advantages,which is widely used in various manufacturing,such as automotive,Navigation and machine tools.In the field of machinery involved in occupying a pivotal position.However,the spiral bevel gear can not be us ed directly for the m achine drive,before use must be precise process processing.Beca use in the transm ission,spiral bevel gear surface finish,burr and other quality problems will seriously affect the mechanical structure of the transmission noise and s tability.And often without re-processing of the bevel gears are mostly quality problems.So research technology has been proposed,the current research technology is to im prove the quality of beve l gear one of the best m ethods.The grinding force is precisely controlled by the interaction force of the applied gear face and the relative rolling speed of the tooth surface.In this pro cess,the ab rasive is sp rayed into the gear surface,and the abrasive is cut by the sliding and the interaction force of the gear surface Small convex metal,to improve the quality of bevel gear,so in the grinding process to the motor for high efficiency and high precision cont rol.And now the domestic m arket to use most of the grinding machine are sem i-automatic,gear grinding depends m ainly on the cumulative experience of technical staff,the gear grinding control and quality is difficult to improve.High efficiency,high precision bevel gear grinding machine mostly rely on foreign imports,seriously restricting the developm ent of China’s manufacturing industry,because how to improve the efficiency and precision of the grinding machine to meet the domestic market demand,is imminent.In this paper,the principle and mechanical structure of the grinding machine and the V,H and G movement models of the grinding machine are introduced.The servo system of the grinding machine is taken as the research object.For th e strong coupling and non-linear characteristic of the perm anent magnet synchronous motor The loop control is carried out by coordinate transform ation to achieve the co ntrol mode of DC m otor,and the vector control of PMSM is realized.Based on this,the current loop,velocity loop and position loop three closed loop PID c ontrol are established,and the AC s ervo system PID control of the three closed-loop param eters to set the anal ysis.Due to the influence of the feeding mechanism of the grinding machine on the performance of the grinding machine,the equivalent mathematical model of the actua tor is established by the analysis and the dynamics theory,and the actuator is added to the system for simulation.In the process of control,The control system will be affected by a variety of factors,and these interference factors are uncertain,which will make a high degree of high performance control is difficult to achieve,resulting in the traditional PI D control m ethod is dif ficult to m eet the requirements,so th is article u ses an indi rect Adaptive fu zzy control,and based on the Lyapunov synthesis method for design.This control m ethod uses the fuzzy system to have the universal approximation ch aracteristic,and through the adjustment of the adaptive parameter to force the output of the m otor to converge gradually to the given reference signal.Through the theory and sim ulation verification,even if the system external environment changes or distur bance mutation,The output res ponse of the system can still track the reference signal better.The results show that the sensitivity of the system is much lower than that of the traditional P ID control,and the control accuracy and response speed are higher than the trad itional PID control,and the dynamic and static characteristics and robustness of the servo system are better.