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Single-phase pulse speed regulation control method based on double-PWM power drive topological structure

A topology, power-driven technology, applied in generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc. Good adjustment characteristics

Active Publication Date: 2019-09-27
NUAA SUPER CONTROL TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the poor speed regulation accuracy in the pulse speed regulation method, which affects the life of the motor and system disturbance

Method used

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  • Single-phase pulse speed regulation control method based on double-PWM power drive topological structure
  • Single-phase pulse speed regulation control method based on double-PWM power drive topological structure
  • Single-phase pulse speed regulation control method based on double-PWM power drive topological structure

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Embodiment Construction

[0031] In order to show the effects of the present invention, the present invention will be further described below through specific examples. However, it should be understood that these examples are only used to explain the present invention in more detail, and should not be construed as limiting the present invention.

[0032] The present invention is a single-phase pulse speed regulation control method based on dual PWM power drive topology, comprising the following steps:

[0033] A single-phase pulse speed regulation control method based on a dual-PWM power drive topology, specifically comprising the following steps:

[0034] Step 1, set up two dual-PWM power topology components: PWM_A (SIN) component and PWM_B (COS) component;

[0035] Step 2: Let the first power transistor QA1 in the PWM_A component receive the gate drive signal PWM_A_G1, the second power transistor QA2 receive two PWM drive signals from the gate PWM_A_G2 to realize the voltage control of the SIN phase...

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Abstract

The invention discloses a single-phase pulse speed regulation control method based on a double-PWM power drive topological structure. The method comprises the steps: enabling a driving signal outputted by an SIN (or COS) phase to be continuous output; only adjusting and changing PWM driving signals: PWM_B(or A)_G1, PWM_B(or A)_G2, PWM_B(or A)_G3 and PWM_B(or A)_G4 of the COS(or SIN) phase, and enabling the number of pulses of the PWM drive signals to change from a minimum value to a maximum value, namely, the PWM drive signals output by the COS(or SIN) phase are single-phase pulses and are repeatedly outputted, wherein the method for achieving the adjustment of the rotating speed of an ultrasonic motor through pulses is called as a single-phase pulse speed adjusting control method. According to the invention, the speed adjusting range of the ultrasonic motor can be as wide as 106, the rotating speed is adjusted linearly, and the extremely-low-speed adjusting characteristic is good. The method is better than the frequency modulation speed regulation and the single-phase voltage regulation speed regulation.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic motor power drive power supplies, and in particular relates to a single-phase pulse speed regulation control method based on a dual PWM power drive topology. Background technique [0002] Compared with traditional motors, ultrasonic motors have the characteristics of low speed, large torque / mass ratio, fast response, power-off self-locking, nanoscale resolution, and no electromagnetic interference. [0003] Ultrasonic motors need to be driven by two quadrature-phase ultrasonic frequencies provided by the ultrasonic motor drive controller. For example: the invention patent "A Dual PWM Power Drive Topology for Ultrasonic Motors (Application Date November 13, 2012, Application No. 201210451717.9)" discloses an output stage of an ultrasonic motor, which uses constant current power supply PWM_POWER and power The dual-PWM power drive topology that couples two PWM components, PWM_DRIVE, has the advan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/00H02N2/14
CPCH02N2/0075H02N2/14
Inventor 赵淳生梁大志杨淋
Owner NUAA SUPER CONTROL TECHNOLOGY CO LTD