The Design And Testing Of The Motor Excitation Vector Control System Based On DSP

Motor is a core part of the drive system, is an important part of the electric vehicle system. Permanent Magnet synchronous motor with high power density, high efficiency, simple structure and other characteristics, together with today’s high speed processing chi p and advanced control algorithms, economic, reliable design of the sensorless control of permanent magnet synchronous motor servo system applied to electric vehicles.First, this paper analyses the structure and characteristics of permanent magnet synchronous motor, operating principle and analysis of permanent magnet synchronous motor characteristic of power angle, analysis of Modern Control Theory.Establishment of mathematical model and equation of state of permanent magnet synchronous motor. On the basis of mathematical models of permanent magnet synchronous motor, togethe r with vector control theory, analysis and determination of control algorithm for vector control id=0 as a control strategy of this article.The principle is the control of permanent magnet synchronous motor vector contr ol of electromagnetic torque, is based on the current control of electromagnetic torque. This article is based on TI’s c2000 series f28335 floating-point current-loop servo control system of micro-controller, speed and position loop control. For sensorless v ector control.Then, this article on permanent magnet synchronous motor servo system based on PWM control circuit, analog input channels, and isolated rs485 interface circuit to do in-depth research.First of all, describes several ways to calculate the rotor of permane nt magnet synchronous motor position. Results of the test each method shows that the above methods can meet the accuracy requirements of motor control.Finally, the introduction of permanent magnet synchronous motor vector control(FO C) hardware design and software design of the system. Control the core of the system is based on TI tms320f28335 micro-controller of the company.Driven by a/d module, mo dule, interface, module and protection modules. By phase 5 incremental test mode, the di stribution of debugging the control link. By the key parameter sampling verification syste m of Actual Control Effect of basic.