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Motor control device, and magnetic pole position detection method

A technology for controlling device, magnetic pole position, applied in the direction of electronically commutated motor control, control system, electrical components, etc.

Active Publication Date: 2013-09-18
THK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there is a possibility of forcing the user to confirm when driving the motor

Method used

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  • Motor control device, and magnetic pole position detection method
  • Motor control device, and magnetic pole position detection method
  • Motor control device, and magnetic pole position detection method

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Embodiment Construction

[0017] Hereinafter, a motor control device and a magnetic pole position detection method according to an embodiment of the present invention will be described with reference to the drawings.

[0018] figure 1 It is a schematic block diagram showing the configuration of the motor control device 1 of the present embodiment.

[0019] As shown in the figure, the motor control device 1 drives the motor 3 by outputting electric power supplied from the power supply unit 2 to the motor 3 based on a position command input from the outside. The motor 3 rotates the mover according to the input electric power, thereby outputting a rotational motion. An encoder 4 is attached to the motor 3, and the encoder 4 outputs a signal corresponding to the amount of rotation (rotation amount) of the mover per unit time.

[0020] A coupling 5 is connected to the mover of the motor 3 . The coupling 5 transmits the rotational motion output by the motor 3 to the drive shaft 6 . The drive shaft 6 rota...

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Abstract

The invention provides a motor control device comprising a movement amount detection part, which can be used to detect the movement amount of the motor according to signals output by an encoder of the motor; and a control part. After the power corresponding to a predetermined first electrical angle is provided for the motor, the power corresponding to a second electrical angle corresponding to the moved direction of the motor can be provided for the motor. When the power corresponding to the second electrical angle is provided for the motor, the movement amount of the motor is equal to the movement amount corresponding to the differential between the first electrical angle and the second electrical angle, the position of the magnetic pole of the motor is disposed on the second electrical angle. When the movement amount is not equal to the movement amount of the differential, the influence caused by the interference can be determined, and the power corresponding to a third electrical angle, which is different from the first electrical angle, can be provided for the motor, and the determination of the position of the magnetic pole can be carried out.

Description

technical field [0001] The invention relates to a motor control device and a magnetic pole position detection method. Background technique [0002] In a brushless motor such as a stepping motor, it is necessary to detect a magnetic pole position at the start of driving. For example, the initial magnetic pole position can be determined by attracting the mover to the magnetic pole position by passing a current corresponding to the predetermined magnetic pole position to the coil of the brushless motor. For example, in the technique described in Japanese Patent Application Laid-Open No. 6-153576, a signal corresponding to a predetermined magnetic pole position is output to a motor, and the magnetic pole position is detected based on the driving amount of the motor. [0003] However, in the technology described in Japanese Patent Laid-Open No. 6-153576, when the motor cannot be driven according to the signal due to noise or the like, there are cases where the magnetic pole posi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/00H02P6/16
Inventor 唐牛健男野村祐树
Owner THK CO LTD
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