Research On Signal And Energy Coordination Control Of Permanent Magnet Synchronous Motors

With the advantages of simple structure,high reliability and easy maintenance,the permanent magnet synchronous motor(PMSM)has become one of the most frequently-used motor in AC motor control.The coordination control principles of the PMSM drive systems are established based on signal and energy conversion viewpoints in this paper.The PMSM drive systems can be viewed as signal and energy transformation devices with multi-port.Change the state of the system by injecting signal and energy to the system.The project presents the design methods of signal controller and energy controller.Moreover,the design process and design method of coordination control strategy is proposed.First of all,the purpose and significance of this research are introduced in this part.Then,the research about the PMSM servo system at the domestic and foreign are introduced.Next,the research about the coordination control strategy of signal and energy at the domestic and foreign are described.Secondly,a hybrid coordination control method based on sliding mode control(SMC)and Port-Controlled Hamiltonian(PCH)control is introduced in detail.A sliding mode controller and a PCH controller are designed.At the same time,the coordination control strategy is designed to combine the sliding mode control and PCH control.The simulation results show that the speed system can not only show the fast track control of speed signal,but also optimize the system's stability and steady state performance.The feasibility of coordination control strategy is proved in this part.Thirdly,a hybrid coordination control scheme based on backstepping and the PCH control on maximum output power principle is designed in this part.The backstepping technique is used to optimize the dynamic response of the system,and the PCH control method is applied to ensure that the system reaches its maximum output power.Furthermore,exponential function is utilized as the coordination function to fulfill the coordination control strategy.The coordination control system is well adapted to the load disturbance of PMSM.The simulation results show that the coordination control scheme which is applied to PMSM speed servo system combines the advantages of backstepping control and PCH control.The system has good dynamic and steady-state performance,and it can eliminate the error quickly under the external disturbances with maximum output power.Fourthly,the PMSM speed control system including iron loss is the main research in the fourth part.Aiming at the mathematical model of PMSM including iron loss,a backstepping controller is designed as the signal control,the PCH controller are designed as the energy controller.The design of coordination control strategy is used to adjust the strength of the two control methods.The simulation results show that the coordination control system has good dynamic performance,and the energy consumption of the system is minimum.In conclusion,the controller based on signal and energy of the PMSM drive systems and the coordination control principles are designed to improve the dynamic and steady-state performance of the system.Moreover,the scheme decreases the energy consumption of the system.The signal controller is used to realize the fast tracking control,and to optimize the dynamic and steady-state response of the system.The energy control method is applied to realize the energy optimization control of the system.Furthermore,the input and output energy of the system are optimize according to the load of motor,and the energy consumption of the system is minimum.