【摘要】 讨论了压电超声换能器的电学模型,从超声电源锁相控制的原理出发,建立了超声电源锁相控制系统的数学模型并进行了稳定性分析,得到了软件锁相环(Soft-warePhase-LockedLoop,简称SPLL)算法的稳定条件。给出了基于高速混合信号处理器MSP430F2012实现SPLL算法的方法,实验结果验证了该SPLL的正确性和精确性。更多还原

【Abstract】 The paper researches electrical model of ultrasonic transducer, through the discussion of phase-locked control principles of ultrasonic power supply, phase- locked control system mathematical model of ultrasonic power supply was established, analyzes the stability of the model and draw the stable condition of the Soft-ware Phase-Locked Loop (SPLL) algorithm. Given a method to realize SPLL algorithm based on mixed signal microcontroller MSP430F2012. Furthermore, the correctitude and accuracy of the SPLL algorithm are verified though experimental evidence.更多还原