Internally-arranged angle sensor all-in-one ultrasonic motor servo control system

Abstract

The invention discloses an internally-arranged angle sensor all-in-one ultrasonic motor servo control system and relates to servo control over ultrasonic motors. The internally-arranged angle sensor all-in-one ultrasonic motor servo control system comprises a command module, a compensation module, a digital processing module, a drive panel and an all-in-one actuating mechanism. The command module sends out commands to the compensation module, and the compensation module converts the commands into frequency control signals and transmits the frequency control signals to the digital processing module; the digital processing module processes the frequency control signals into square signals and transmits the square signals to the drive panel, the drive panel amplifies the square signals and then inputs the square signals to the all-in-one actuating mechanism, the all-in-one actuating mechanism is a hollow ultrasonic motor with an internally-arranged angle sensor, the angle sensor feeds back speed and position information, the speed and position information reaches the compensation module after passing through the drive panel and the digital processing module, through comparison, compensation and conversion, newly-generated frequency control signals are transmitted to the drive panel, and therefore closed-loop control is achieved. The internally-arranged angle sensor all-in-one ultrasonic motor servo control system has high reliability, high precision and good environmental suitability, and is especially suitable for being used as shaft end servo control systems of platforms with multi-degrees of freedom.

Description

technical field [0001] This invention relates to the control of ultrasonic motors, and more particularly to the servo control of the velocity and position of hollow ultrasonic motors. Background technique [0002] Ultrasonic motor is a new type of direct drive motor that uses the inverse piezoelectric effect of piezoelectric elements to excite ultrasonic vibration, and realizes the conversion of electrical energy into mechanical energy output through the friction drive between the stator and rotor. Among them, the traveling wave ultrasonic motor is the most widely used. . The current traveling wave ultrasonic motor is not only not compact enough, but also has no integrated servo control system, which makes it difficult to form a closed-loop control of the hollow ultrasonic motor, which has become a bottleneck restricting the miniaturization and automation of the ultrasonic motor. Contents of the invention [0003] The technical solution of the present invention is to over...

AI Technical Summary

Problems solved by technology

The current traveling wave ultrasonic motor is not only not compact enough, but also does not have an integrated servo control system, making it difficult to form a closed-loop control of the hollow ultrasonic motor, which has become a bottleneck restricting the miniaturization and automation of ultrasonic motors.

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