【摘要】 研制了一台新型直线超声电机,测定了电机的频率—速度关系、相位—速度关系。基于DDS技术设计的驱动器能产生两相可调频率、可调相位差及可调幅值的正弦信号。采用调相、调频综合控制方法,构建了直线超声电机驱动的全数字位置控制平台。该平台可达到5μm的定位精度。更多还原

【Abstract】 This paper presented a new type linear ultrasonic motor. Driving experiments were performed to measure the relations between frequency-speed,phase-speed.The driving-controller using DDS(digital direct frequency synthesis) technology can produce two phase sinusoidal signals,the frequencies,phase differences and amplitudes of them can all be adjusted.By adjusting-frequency and adjusting-phase,the linear ultrasonic motor can attain 5μm position precision.更多还原