Serial excitation electromotor control device and its rotation speed control method

A speed control, series excitation motor technology, applied in the direction of AC motor control, control system, electrical components, etc., can solve problems such as safety hazards, save electrical components, simplify the motor control circuit, and facilitate the installation of the whole machine.

Inactive Publication Date: 2008-09-17
SHENZHEN H&T INTELLIGENT CONTROL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution must use a speed sensor, and the speed sensor is installed on the output shaft of the motor, which has certain potential safety hazards

Method used

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  • Serial excitation electromotor control device and its rotation speed control method
  • Serial excitation electromotor control device and its rotation speed control method
  • Serial excitation electromotor control device and its rotation speed control method

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0020] refer to figure 1 , which is a flowchart of an embodiment of the method for controlling the speed of a series-excited motor provided by the present invention; as shown in the figure, the specific flow of the speed control of a series-excited motor in this embodiment is as follows:

[0021] Step S01, a signal collection step, collects the voltage signal of the motor.

[0022] Step S02, the first signal conversion step, searches the preset first voltage-speed relationship mapping table to obtain the speed value corresponding to the current voltage value.

[0023] Step S03, the speed control step, controls the motor to reach a preset target speed according to the speed value.

[0024] During specific implementation, step S03 may specifically include:

[0025] The comparison step is to compare the speed value with the preset target speed value, if the difference a1 exceeds the preset first critical value a, after adjusting the control parameter value, execute the signal c...

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PUM

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Abstract

The present invention discloses a method for controlling the rotating velocity of the series machine. The method comprises the following procedures: a signal collecting procedure for collecting the voltage signal of the electric motor; a first signal converting procedure for searching the prearranged relationship between a first voltage and the velocity mapping table and obtaining the velocity value corresponding with the present current value; and a rotation velocity control procedure, controlling the motor to the prearranged target velocity according to the velocity value. The invention also discloses a corresponding control device of the series machine. The invention has the advantages of no requirement to the velocity transducer, simplification to the control circuit of the electric motor, saving the electrical component and reduction to the designing cost. At the same time the installation of whole set of the machine is facilitated and the product is leaded to more satisfying the safety standard.

Description

technical field [0001] The invention relates to motor control technology, in particular to a series excitation motor control device and a speed control method thereof. Background technique [0002] In the prior art, the control scheme for the rotational speed of the series-excited motor of the food mixer, especially the juicer, is generally to install a speed sensor on the output shaft of the motor to monitor the rotational speed of the motor, and the controller uses the output signal of the speed sensor as the The reference signal is used to realize the regulation of the motor speed. This solution must use a speed sensor, and the speed sensor is installed on the output shaft of the motor, which has certain potential safety hazards. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for controlling the speed of a series-excited motor, which can eliminate the need for a speed sensor, reduce costs, and make ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/02H02P25/02
Inventor 姜西辉刘建伟首召兵
Owner SHENZHEN H&T INTELLIGENT CONTROL
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