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Motor low-speed measuring method and motor speed measuring system

A measurement method and technology of motor speed, applied in the direction of linear/angular velocity measurement, velocity/acceleration/shock measurement, measurement device, etc., can solve the problems of error, inability to measure the current speed, etc., and achieve the effect of improving the accuracy of motor speed measurement

Inactive Publication Date: 2019-04-26
SHENZHEN YUEJIANG TECH CO LTD
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Problems solved by technology

However, when the motor is running at low speed, using the T method to measure the speed will introduce a large error. When the motor is running at an ultra-low speed (without obvious pulse changes in the sampling period), the M method, T method or M / T method cannot measure its speed. Corresponding current speed

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  • Motor low-speed measuring method and motor speed measuring system
  • Motor low-speed measuring method and motor speed measuring system

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Embodiment Construction

[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0056] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0057] see figure 1 , is a schematic structural diagram of a motor speed measurement system provided by an embodiment of the pr...

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Abstract

The invention relates to the field of motor speed measurement, and discloses a motor low-speed measuring method and a motor speed measuring system. The method comprises the steps of acquiring a speedmeasuring encoder pulse; sampling the speed measuring encoder pulse in a preset sampling period; determining a counter according to the number of the pulses in a target sampling period; calculating the number of the pulses in the target sampling period and a time of the target sampling period according to the counter; calculating a motor rotation speed according to the number of the pulses in thetarget sampling period and the time of the target sampling period. The method achieves the motor speed measurement under an ultra-low speed and improves the accuracy of the motor speed measurement atthe low speed.

Description

technical field [0001] The invention relates to the field of motor speed measurement, in particular to a motor low-speed measurement method and a motor speed measurement system. Background technique [0002] The linear displacement or angular displacement generated by the rotation of the motor. The main function of the motor in the circuit is to generate driving torque, which is used as the power source of the motor speed measurement system or electrical equipment. In the control of the motor, the control of the motor speed is a very important link. The accuracy of the motor speed measurement determines the accuracy of the motor control. Usually, an incremental encoder is used to measure the motor speed. [0003] In the process of realizing the present invention, the inventor found the following problems in related technologies: At present, the M method, T method or M / T method is mostly used for motor speed measurement. Generally, the M method is used for high-speed speed me...

Claims

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Application Information

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IPC IPC(8): G01P3/481
CPCG01P3/481
Inventor 庄飞飞刘培超刘志立郎需林
Owner SHENZHEN YUEJIANG TECH CO LTD
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