单片机--永磁无刷直流电机—-毕业论文设计

BLDCMBLDCM small size, light weight, it has a DC motor similar to the general good speed performance, without the existence of machinery for the device, electromagnetic interference noise and small, low maintenance requirements, reliability, good; and as a result of not required excitation power, efficiency is relatively high, it has been rapid development. A company based on ADI's ADSP-21992 chip high-speed brushless DC motor control system, which has a high-speed, high load moment of inertia, have greater motor starting torque characteristics.DSP-based motor control system with the traditional single-chip motor control system and a dedicated chip motor control system, that is, a dedicated motor control mechanisms, user-programmable, scalable, and powerful, and so on; at the same time, overcome their respective shortcomings, such as peripherals and memory integrated into the chip to reduce circuit board area, reducing the number of system components to improve the CPU processing capacity, improve system reliability. System, the ultimate aim is the application of high-speed flywheel system brushless DC motor, therefore, very high speed processors, from the real-time performance to consider,Need to select the highest possible processing speed of the chip. 2199x series and ADI's speed reached 160 M, and then to adapt to take into account their poor working environment, in this paper, we have chosen the ADSP-21992 as a core control chip.(A) hardware1. Control circuitMainly by the control circuit and its corresponding external ADSP21992 expansion circuit. Including the crystal oscillator circuit, extend outside the FLASH, JTAG interface, power supply voltage conversion circuit, PWM interface, 1 / 0 interface and A /...