The Study Of Digital Ultrasonic Power Supply Based On DSP

Ultrasonic peening machine is evaluated reputably since being invented, because they are light and portable, easily controlled, fit for kinds of joints. However, for the anolog circuit's flaws in itself, the controllers in ultrasonic peening machine can not match the speed which they should track. Therefore, the machine is apt to disarrangement in the working state or even can not work in some cases. For that, a kind of control method with high frequency, quick speed and stable feature is badly needed. The new system that is made of DSP is just the key to the problem.In this paper, detailed introduction of the control chip is given first, then the control system's hardware circuits have been designed, including DSP's minimal system, peripheral circuit, signal's feedback circuit and Maxim'digital signal sampling circuit .etc. Through studying the DSP's development environment, we develop the great capability of control chip.We use FFT module of DSP to solve the problem that there is interfere signal when sampling. So we can adjust the waves. Furthermore DSP system is connected to the LCD system to achieve real time stakeout.The test proves that it is feasible to acquire resonance in the way of adjusting the frequency of PWM...