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Controller for permanent magnet synchronous motor, control method, and image forming apparatus

A permanent magnet synchronous motor and control device technology, which is applied in the direction of the reduction device of the DC motor, the control of the motor generator, the stop device, etc., and can solve the problems of complex control

Inactive Publication Date: 2018-06-26
KONICA MINOLTA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Therefore, at this time, it is necessary to continuously generate a position command specifying the position of the movable member, and the control for this becomes complicated.

Method used

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  • Controller for permanent magnet synchronous motor, control method, and image forming apparatus
  • Controller for permanent magnet synchronous motor, control method, and image forming apparatus
  • Controller for permanent magnet synchronous motor, control method, and image forming apparatus

Examples

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Embodiment Construction

[0032] figure 1 An overview of the configuration of an image forming apparatus 1 including a motor control device 21 according to an embodiment of the present invention is shown, figure 2 The structure of the brushless motor 3 is schematically shown.

[0033] exist figure 1 In this example, the image forming apparatus 1 is a color printer including an electrophotographic printer engine 1A. The printer engine 1A has four image workstations 11 , 12 , 13 , and 14 and forms four-color toner images of yellow (Y), magenta (M), cyan (C), and black (K) in parallel. Each of the video workstations 11 , 12 , 13 , and 14 has a cylindrical photoreceptor, a charging charger, a developing device, a cleaner, a light source for exposure, and the like.

[0034] The toner images of the four colors are primarily transferred onto the intermediate transfer belt 16 , and then secondarily transferred onto the paper 9 pulled out from the paper cassette 10 by the paper feed roller 15A and conveyed ...

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Abstract

The invention relates to a controller for a permanent magnet synchronous motor, a control method, and an image forming apparatus, so a rotor of a permanent magnet synchronous motor stops at a desirable position. The rotor rotates by a rotating magnetic field caused by a current flowing through an armature (31). The controller starts a deceleration control of reducing a rotational speed of the rotor when a stop command is inputted in a state where the rotor (32) rotates at a predetermined rotational speed; and performs a fixed excitation control when the rotational speed is reduced to a set speed. The fixed excitation control includes setting a current for causing a magnetic field vector (85) for stopping the rotor (32) at a target position in accordance with an amount of rotation of the rotor since the deceleration control has started and passing the current through the armature (31).

Description

technical field [0001] The invention relates to a control device, a control method and an image forming device of a permanent magnet synchronous motor. Background technique [0002] Generally, a permanent magnet synchronous motor (PMSM: Permanent Magnet Synchronous Motor) includes a stator having windings and a rotor using permanent magnets, generates a rotating magnetic field by passing an alternating current through the windings, and rotates the rotor in synchronization with the rotating magnetic field . Efficient and smooth rotation is possible by vector control in which alternating current is controlled as a vector component of the d-q coordinate system. [0003] In recent years, sensorless permanent magnet synchronous motors have been widely used. The sensorless type does not have a magnetic sensor or encoder for detecting the magnetic pole position. Therefore, the vector control of the sensorless permanent magnet synchronous motor uses a method of estimating the rot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/24
CPCH02P6/24G03G15/6529H02P21/36H02P3/025H02P3/14
Inventor 吉田一充酒井克英田村友伸浅野齐藤森春充
Owner KONICA MINOLTA INC