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Motor speed measuring method, motor speed measuring device and motor speed measuring system

A speed measurement and angular velocity technology, which is applied in the field of motor speed measurement method, speed measurement device and speed measurement system, can solve the problems of small measurement period and low precision of speed measurement results, and achieve the effect of overcoming low precision

Pending Publication Date: 2022-04-08
GUANGZHOU XAIRCRAFT TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, when the motor angular velocity or rotating speed is fast, the existing motor speed measurement method will cause the accuracy of the speed measurement result to be low due to the small measurement period.

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  • Motor speed measuring method, motor speed measuring device and motor speed measuring system
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  • Motor speed measuring method, motor speed measuring device and motor speed measuring system

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Embodiment Construction

[0025]The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0026] Servo system is an automatic control system that enables the output of objects such as motors, etc., such as position, orientation, and state, to accurately follow any changes in the input (or given value). It can also be called a follow-up system. In the process of using the servo system to measure the speed of the motor, one method is to use a Hall sensor to measure the electrical angle change or signal change to meas...

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Abstract

The invention provides a speed measurement method, a speed measurement device and a speed measurement system of a motor. The speed measurement method of the motor comprises the steps that a first voltage signal U1 output by a first Hall sensor at a first moment, a second voltage signal U2 output by a second Hall sensor at the first moment and a first electrical angle theta 1 of the motor are obtained, and the included angle between the first Hall sensor and the axis connecting line of the motor and the included angle between the second Hall sensor and the axis connecting line of the motor are 90 degrees; theta1 is an estimated electrical angle of the position of the motor at the previous moment of the first moment; a first error value E1 is obtained through calculation according to U1, U2 and theta1, and E1 = U1cos theta1-U2sin theta1; adjusting E1 to 0 by using a feedback regulator and then outputting a first angular velocity w1; and determining the w1 as a speed measurement result of the motor at the first moment. According to the invention, the speed measurement result of the motor at the first moment can be rapidly and accurately measured as the first angular velocity w1, and the precision of the speed measurement result is improved.

Description

technical field [0001] The application relates to the technical field of motor speed measurement, in particular to a motor speed measurement method, a speed measurement device and a speed measurement system. Background technique [0002] As a traction power supply device, the motor can provide kinetic energy for systems loaded with motors, such as electric vehicles and unmanned aerial vehicles. Usually, it is necessary to measure the real-time rotational speed or angular velocity of the motor, so that the normal operation of the motor can be monitored in real time. [0003] However, when the angular velocity or rotational speed of the motor is relatively fast in the existing motor speed measurement method, the accuracy of the speed measurement result is low due to the small measurement period. SUMMARY OF THE INVENTION [0004] In view of this, the present application provides a speed measurement method for a motor, a speed measurement device and a speed measurement system...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/14H02P21/18H02P25/022
Inventor 郜潇宁郭喜华
Owner GUANGZHOU XAIRCRAFT TECH CO LTD