Research Of DSP-Based DC Speed Regulation And Adaptive-Control Scheme

DC motor has excellent character on speed regulation, such as smooth timing in a wide range, simple method. Meanwhile as its capability on overload, enduring frequent impacting load, it is widely used in area of high performance electric drive such as cutting machine tool, paper machine, etc.Traditional controller of DC Speed Regulation System, which adopts separated components and operates with high ratio of malfunction, lack of stability and technology , can not meet the need of production. As the development of computer and communications, digital DC Speed Regulation System conquers this shortage, widely used in DC Speed Regulation System.In this paper, digital DC Speed Regulation System is designed, which adopt DSP 2407 controller as the main microcontroller, P89C669 micro-control unit (MCU) as the chip of supervised system. It realized digital design and regulation about parameters in this system through data communication between PC and MC. The main work are provided as follows:1. Design the software and hardware of DC Speed Regulation systems with power circle fuction ,completed power circle experiment on two in-line motors.2. IPM PS21867 of MITSUBISHI is used as power output module, drive protected circuit, control circuit and communication protected circuit are designed.3. The control strategy of system is PWM method. The software of system is programmed, including main program, communication program and interruption service program.4. The whole arrangement and debugging of prototype is completed,and realize the double closed loops control on DC motor.5. As the change of the load, moment of inertia and etc, the performance of the system will be influenced. In this paper, based on the principle of model reference adaptive control, Narendra scheme of DC Speed Regulation System with double closed loops is implemented and simulated.