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SCM (single-chip microcomputer)-based wide-range accurate measuring method for real-time rotating speed of motor

A technology of real-time speed and single-chip microcomputer, which is applied to devices using electric/magnetic methods, and can solve problems such as blind areas of speed feedback, motor jitter, and loss of control

Active Publication Date: 2015-04-01
SANMING HENGSHUN PRINTING MACHINERY
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Problems solved by technology

[0004] From the above analysis, it can be seen that when using a tachometer generator or a linear Hall element to measure the low-speed running state of the motor under test using the traditional analog speed measurement method, there will be a speed feedback blind zone, and the motor in the closed-loop speed regulation system will vibrate or even run out of control, seriously will destabilize the entire control system

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  • SCM (single-chip microcomputer)-based wide-range accurate measuring method for real-time rotating speed of motor
  • SCM (single-chip microcomputer)-based wide-range accurate measuring method for real-time rotating speed of motor
  • SCM (single-chip microcomputer)-based wide-range accurate measuring method for real-time rotating speed of motor

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[0038] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0039] The algorithm characteristics and core content of this patent are described below with tachogenerator and linear Hall element as examples, such as figure 1 shown, but not as a limitation of the present invention. figure 1 The part marked by the middle dotted line is the embodiment of the hardware architecture of the speed measurement and signal processing system described in this patent: the speed measurement generator (or linear Hall element) 1 converts the mechanical speed into an electrical signal, and the output is in the form of a sinusoidal voltage wave, a sinusoidal voltage wave Amplified by the signal amplification module 2, the amplified sinusoidal voltage wave is converted into a digital signal by the A / D conversion module 3 and provided to the single-chip processing module 4, and the single-chip processing module 4 feeds...

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Abstract

The invention relates to an SCM (single-chip microcomputer)-based wide-range accurate measuring method for the real-time rotating speed of a motor. A designed speed measuring system comprises a speed-measuring generator or a linear Hall element, a signal amplification module, an A / D conversion module, an SCM processing module as well as a speed output and display module. The accurate and real-time rotating speed of the to-be-measured motor is directly estimated with a numerical algorithm running in the SCM processing module according to the sine induced electromotive force output by the speed-measuring generator or the linear Hall element, the problem that traditional simulation speed measuring circuits have low-rotating-speed feedback blind zones is mainly solved, and wide-range accurate measurement of the continuous and real-time rotating speed of the to-be-measured motor is realized.

Description

technical field [0001] The invention belongs to the field of electromechanical control, and relates to a single-chip microcomputer-based method for accurately measuring the real-time speed of a motor in a wide range, and is applicable to various closed-loop speed-regulating control systems using a speed-measuring generator and a linear Hall element as a speed-measuring device. Background technique [0002] As two commonly used analog speed measuring devices, the tachometer generator and the linear Hall element can convert the mechanical speed of the motor under test into an electrical signal, and are widely used in various speed or position control systems. The speed measurement principles of the tachogenerator and the linear Hall element are as follows: (1) The winding and magnetic circuit of the tachogenerator are precisely designed. The amplitude of the sine wave output by the machine is linear, which has nothing to do with the phase angle; (2) According to the principle ...

Claims

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Application Information

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IPC IPC(8): G01P3/44
Inventor 任雯赖森财
Owner SANMING HENGSHUN PRINTING MACHINERY
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