Abstract
DC machine is widely used in the industrial production and daily life and speed adjustment of DC machine has got more and more attention. With the development of electronic technology, the method for speed adjustment has been in great change correspondingly, from analog circuit to digital circuit, from SCM to control system. Speed adjustment of DC machine has got improved greatly.
Having experienced the development of 8-bit, 16-bit and 32-bit, MCU has got dramatic improvement in control and processing speed. Processor in ARM system is mostly used in current embedded system. It takes RISC technology, with characteristics such as small volume, low power consumption, advanced function. Registers are greatly used in inner chip, instruction executes fast and with fixed length, which enables processor works fast with high effectiveness. As Linux supports ARM technology, has inner core can be downsizing and open codes, so applying Linux to embedded system can give fully play to ARM and Linux advantages.
Taking LPC2290 as an example, this design introduces the hardware and software design of this system in detail.
Keywords：LPC2290；PWM；DC MOTOR
