A Transmitter Dsp-based Servo Control System Design And Research

To cater for the development of multiple rockets, servo system of some multiple rockets is taken as the research object in this thesis, and high performance AC position servo system of multiple rockets is studied. It can effectively improve shooting precision of multiple rocket launcher, fulfilling the positioning and tracking accuracy when servo system is under model parametric variation and strong disturbance, and having important theoretical value and realistic meanings.DSP, AC servo control technology, modern control theory and modern electronical technique are applied, and a numerical AC position servo system is designed. Firstly, the choice of 3-phase PMSM and gearbox is done. Mathematical model of PMSM is elaborately analyzed; and major control methods of servo system are discussed. SVPWM is elaborately analyzed. Then, aimed at systematic characteristics such as greatly varying parameters and load, and strong impact moment, sliding mode control is put forward, and the combination of PID and sliding mode control is studied. Simulation results indicate this controller can make the system have good performance under parametric variation and strong disturbance. Servo system is set up and DSP controller is designed, the corresponding software is developed, moreover, their structure and function are described in detail. The hardware design of position servo system is done, including power and driver. Power includes inverter and auxiliary power supply, and the design of driver is based on TMS320F2812 and Intelligent Power Module. Besides, PCB is elaborately analyzed. Based on the hardware circuit, the software is programmed with C and assembly language; Experimental results show that the servo control system designed satisfies high performance requests.Finally, experiment analysis of servo system is carried out on the machine; using classic PID control and sliding mode control to test the machine. Experimental results confirms that system satisfies the capability request of servo system, also confirms that the usefulness of control strategy and the design of software and hardware.