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Control method of brushless motor

A control method and motor technology, applied in the control field of motors with brakes, tubular motors, and brushless motors, can solve the problems of low assembly efficiency of tubular motors, achieve the effects of reducing the number of parts, efficient assembly, and reducing costs

Inactive Publication Date: 2019-03-26
SANKYO SEIKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the assembly efficiency of the tubular motor is low

Method used

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  • Control method of brushless motor
  • Control method of brushless motor
  • Control method of brushless motor

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Experimental program
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Effect test

Embodiment Construction

[0094] (first invention)

[0095] Using paragraphs (0054) to (0088), (0175) and Figure 1 to Figure 6 The first invention will be described.

[0096] Hereinafter, a tubular motor to which the present invention is applied will be described with reference to the drawings. In the following description, L is attached to the motor axis, L1 is attached to the output side where the motor shaft protrudes, and L2 is attached to the side opposite to the side where the motor shaft protrudes (opposite output side).

[0097] (the whole frame)

[0098] figure 1 is an explanatory diagram of a tubular motor 1 to which the present invention is applied, figure 1 (a), (b), and (c) are a perspective view of the tubular motor 1 , a perspective view of the tubular motor 1 with the casing 2 omitted, and an exploded perspective view of a unit housed inside the casing. figure 2 is a sectional view of a tubular motor 1 to which the present invention is applied, figure 2 (a) and (b) are cross-...

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Abstract

A control method of a brushless motor can control the rotation of the rotor loaded from outside even without additional position or rotation sensors. In the control method of the brushless motor of the present invention, the brushless motor has: a rotor with a rotor magnet; a stator with multiple driving coils; and a magnetic sensor element that generates a position detection signal correspondingto the rotation of the rotor magnet, in which, in the first direction driving process of driving the rotor to rotate in the first direction, before starting to supply power to the driving coil, according to the magnetism. The detection result of the sensor element detects the rotation of the rotor. In the detection result of the rotation detection processing, when the rotor speed is less than thethreshold, the driving current that drives the rotor to rotate in the first direction is supplied to multiple driving coils. When the rotor speed is above the threshold, the braking force is applied to the rotor, and the rotor is applied from outside. The load that causes the rotor to rotate in the first direction is added.

Description

[0001] The patent application for this invention is the international application number PCT / JP2015 / 078005, the international application date is October 2, 2015, and the application number entering the Chinese national stage is 201580030622.1, and the name is "tubular motor, brushless motor control method, belt A divisional application of the invention patent application for brake motor". technical field [0002] The present invention (first invention) relates to a tubular motor in which a motor unit and a planetary gear unit are arranged in an axial direction inside a cylindrical case. [0003] The present invention (second invention) relates to a method of controlling a brushless motor used in an electric roller blind device or the like. [0004] The present invention (third invention) relates to a motor with a brake including a built-in brake for applying a braking force to a motor shaft. Background technique [0005] (first invention) [0006] In a tubular motor used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/116B65H18/10F16D55/36F16D65/18F16H1/46H02K7/102H02P3/04H02P3/22H02P6/24
CPCF16H1/46F16D55/36H02P3/04H02P3/22H02P6/24H02K7/116H02K2207/03H02K7/1163B65H18/10F16D65/18H02K7/102H02K11/215
Inventor 安藤正明吉川伸一中村五郎黑沢博德鲇泽优武田正芦部昇
Owner SANKYO SEIKI MFG CO LTD