【摘要】 本文把锁相环技术与PWM变频调速系统相结合 ,建立了PLL交流调速系统 ,该系统可达到较高的速度控制精确度 ,具有较好的应用价值更多还原

【Abstract】 The paper combined the phase-locked Loop techniques with PWM variable frequency control system to obtain a fast and precise control of induction motor speed.The expeimental results show that the proposed system can achieve precise speed control with fast response更多还原