針對行波型超聲波電機的驅動控制特性，為方便電機調試，實現(xiàn)電機的轉速或位置信號檢測，檢測電機首次啟動時的環(huán)境溫度，設計了一款基于LPC2124的驅動控制系統(tǒng)。采用傳統(tǒng)的推挽電路實現(xiàn)功率放大，串聯(lián)電感進行諧振匹配。運用LPC2124內置的脈寬調制器和A/D轉換器，外加微調電阻，可實時調節(jié)PWM頻率，從而方便電機的調試。霍爾傳感器ATS642LSH結合固定在電機轉子上的環(huán)形齒輪，檢測電機轉速或位置。采用LM75溫度傳感器，檢測環(huán)境溫度，給電機的首次啟動提供一個參考溫度。試驗表明，系統(tǒng)能順利檢測環(huán)境溫度，能穩(wěn)定、可靠地驅動電機工作，同時檢測電機的轉速或位置信號。

　　Abstract:

　　For the special driving and controlling features of traveling-wave type ultrasonic motor，to facilitate motor’s testing， to detect the speed or position of motor， to sense the temperature when first driving the motor， this paper designed a system based on LPC2124.A traditional push-pull circuit amplified power and series inductor resonated with motor.LPC2124’s pulse-width modulator and A/D converter with an adjustable resistor could modulate the frequency of PWM real time.Hall sensor ATS642LSH detected the speed or position with a ring gear fixed on the rotor.LM75 measured the environment temperature，and LPC2124 generated PWM signals according to the temperature，especially when first driving the motor.The experiment results show that the system could successfully measure the temperature，steadily and reliably drive motor，and detect speed or position singal.