Permanent Magnet Synchronous Motor Controller Design Based On R5F513T5ADFL

In recent years,the proposal of "double carbon" has attracted global attention.Electrical control,as the core application of new energy technology,has been developing vigorously towards the trend of digitalization and intelligence.The combination of MCU and permanent magnet synchronous motor has become the best choice for the control of smart household appliances,providing users with a more secure and reliable solution.The control system composed of MCU and permanent magnet synchronous motor has become a common solution to the control problem of intelligent household appliances.Permanent magnet synchronous motor has the characteristics of low cost,small size and high efficiency.In order to give full play to its advantages,it is necessary to design motor controller based on high-performance and high-precision MCU platform.In this paper,R5F513T5 ADFL chip of RX13 T series introduced by Renesas Electronics Co.,Ltd.in recent years will be used to design a surface stick permanent magnet synchronous motor controller organically combining hardware circuit,embedded software and control algorithm for this chip.The research content of this paper is divided into microcontroller hardware and software and motor control algorithm two aspects.Firstly,in the aspect of single chip microcomputer,the chip selection is carried out according to the needs of motor operation,the underlying program logic supporting the motor algorithm operation is designed,and the software timing is reasonably arranged.After completing the software design,use Altium Designer software to draw schematic diagrams of hardware circuits such as master circuit,driver circuit and protection circuit.In terms of motor control algorithm,this paper abstracted the permanent magnet synchronous motor as a mathematical model,built a simulation platform of speed and current double closed-loop FOC control algorithm based on decoupling by using coordinate transformation,and adjusted and optimized the parameters of speed loop and current loop PI controller.Then a simulation of control algorithm combining sliding mode velocity observer and minimum order load observer was built to solve the load mutation problem that may occur in actual working conditions.In order to reduce the chattering phenomenon of the sliding mode observer,the traditional switching control function of SMO is replaced by the hyperbolic tangent function.The torque compensation method with variable feedforward gain is used in the load observer to optimize the torque compensation effect.Finally,this paper writes the code according to the algorithm simulation model,writes it into the motor controller,builds the experimental platform,monitors the phase current and voltage waveform through oscilloscope and uses MATLAB software for simulation analysis and data processing,and verifies the feasibility of the design of the motor controller with speed and load dual observer and the effectiveness of the load disturbance suppression.