Ultrasonic motor driver

A technology of ultrasonic motor and driver, applied in the direction of generator/motor, electrical components, piezoelectric effect/electrostrictive or magnetostrictive motor, etc., can solve the problems of dispersion, low control precision, insufficient frequency resolution, etc. Achieve the effects of increasing current detection and protection, solving large fluctuations in speed, and high accuracy

Inactive Publication Date: 2013-12-04
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0005] The driver disclosed in this patent is a drive controller with an embedded microprocessor as the core, which belongs to the digital driver. Although it effectively solves the shortcomings of the analog driver that cannot communicate with the upper computer and digital control, due to the digital driver operating frequency It cannot be increased without limit, so when it is

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  • Ultrasonic motor driver
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Embodiment Construction

[0028] Below in conjunction with accompanying drawing, the technical scheme of invention is described in detail:

[0029] The controllable clock module of this controller adopts a voltage-controlled oscillator.

[0030] Such as figure 1 As shown, an ultrasonic motor driver includes an embedded microprocessor, a voltage-controlled oscillator, a two-phase power amplification and matching module, a feedback signal acquisition module, a current detection module, a forward and reverse compensation module, a switch, a working indication module, and a reference Voltage regulation module, UART interface module; Wherein, described embedded microprocessor comprises clock module, PWM module, operational amplifier comparison module, UART module; Described two-phase power amplification and matching module are Sin phase power amplification and matching module and Cos Phase power amplification and matching module; the output of the voltage-controlled oscillator is connected to the input sig...

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Abstract

The invention provides an ultrasonic motor driver. The ultrasonic motor driver comprises a processing module, a two-phase power amplification and matching module, a controllable clock module, a feedback signal collection module and a current detection module; clock signals output from the controllable clock module are output to the two-phase power amplification and matching module to perform matching processing after being processed through the processing module; the clock signals after matching drive the ultrasonic motor to work; the feedback signal collection module feeds back collected speed signals of the ultrasonic motor to the processing module; the processing module processes the feedback speed signals and outputs control signals to the controllable clock module to adjust an output clock of the controllable clock module, so that control targets of motor speed high performance and high stability are achieved.

Description

technical field [0001] The invention relates to an ultrasonic motor driver and belongs to the field of ultrasonic motor drive control. Background technique [0002] Ultrasonic motor is a kind of motor in which piezoelectric ceramics act to cause periodic traveling waves of submicron deformation of elastic body, and then perform work through friction. Compared with traditional motors, ultrasonic motors have the characteristics of low speed, large torque / mass ratio, fast response, self-locking when power failure, nanoscale resolution, and no electromagnetic interference. [0003] Ultrasonic motors need to be driven by two quadrature phase ultrasonic frequencies provided by the ultrasonic motor driver. At present, the existing ultrasonic motor driver with all discrete components can realize the start / stop and speed regulation of the motor, but it cannot realize the communication with the host computer, and the use of discrete components makes the volume of the driver relativel...

Claims

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Application Information

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IPC IPC(8): H02N2/14
Inventor 潘松菅磊吴文才朱华赵淳生
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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