JP2020096506A5

JP2020096506A5 -

Info

Publication number: JP2020096506A5
Application number: JP2019116463A
Authority: JP
Filing date: 2019-06-24
Publication date: 2022-06-20
Anticipated expiration: 2039-06-24

Description

本発明の実施形態の装置は、ロータの回転駆動を行うモータ駆動装置であって、前記ロータの回転位置を検出する検出手段の出力を取得して駆動波形を生成する生成手段と、前記回転位置の位相と前記駆動波形の位相とを同期させる制御を行う制御手段と、を備える。前記生成手段は、前記回転位置の位相と前記駆動波形の位相とが同期した状態で、前記回転位置と前記駆動波形との間に位相差を設定する設定手段を有する。前記制御手段は、前記検出手段の出力を用いることなく前記生成手段が生成する駆動波形にしたがって前記ロータを回転させる第１の駆動モードと、前記検出手段の出力を用いて、前記設定手段により設定される位相差から前記生成手段が生成する駆動波形にしたがって前記ロータを回転させる第２の駆動モードとを切り替える制御を行う。前記制御手段は、前記ロータを前記第１の駆動モードで第１の回転方向に回転させる制御を行っている間に、前記ロータを第２の回転方向に反転させる指示が入力された場合、前記ロータを前記第１の回転方向に回転をさせながら前記第２の駆動モードに変更するとともに前記第２の回転方向のトルクを発生させる前記位相差を前記設定手段により設定し、前記ロータを反転が終了した後に再び前記第１の駆動モードに変更する制御を行う。
The device of the embodiment of the present invention is a motor drive device that drives the rotation of the rotor, and is a generation means that acquires the output of the detection means that detects the rotation position of the rotor and generates a drive waveform, and the rotation position. A control means for controlling to synchronize the phase of the drive waveform with the phase of the drive waveform is provided. The generation means has a setting means for setting a phase difference between the rotation position and the drive waveform in a state where the phase of the rotation position and the phase of the drive waveform are synchronized. The control means is set by the setting means using the first drive mode in which the rotor is rotated according to the drive waveform generated by the generation means without using the output of the detection means, and the output of the detection means. Control is performed to switch between the second drive mode in which the rotor is rotated according to the drive waveform generated by the generation means from the phase difference generated. When the control means controls to rotate the rotor in the first rotation direction in the first drive mode and an instruction to invert the rotor in the second rotation direction is input, the control means said . The rotor is changed to the second drive mode while rotating in the first rotation direction, and the phase difference for generating the torque in the second rotation direction is set by the setting means, and the rotor is inverted. After the end, the control for changing to the first drive mode is performed again.

Claims

A motor drive that drives the rotation of the rotor.
A generation means that acquires the output of the detection means that detects the rotation position of the rotor and generates a drive waveform, and a generation means.
A control means for controlling to synchronize the phase of the rotation position with the phase of the drive waveform is provided.
The generation means has a setting means for setting a phase difference between the rotation position and the drive waveform in a state where the phase of the rotation position and the phase of the drive waveform are synchronized.
The control means is set by the setting means using the first drive mode in which the rotor is rotated according to the drive waveform generated by the generation means without using the output of the detection means, and the output of the detection means. Control is performed to switch between the second drive mode in which the rotor is rotated according to the drive waveform generated by the generation means from the phase difference generated.
When the control means controls to rotate the rotor in the first rotation direction in the first drive mode and an instruction to invert the rotor in the second rotation direction is input, the control means said . While rotating the rotor in the first rotation direction, the rotor is changed to the second drive mode, and the phase difference for generating the torque in the second rotation direction is set by the setting means, and the rotor is inverted. A motor drive device characterized in that control for changing to the first drive mode is performed again after the end.

The generation means includes a determination means for acquiring the output of the detection means, calculating a count value corresponding to the rotation amount of the rotor, and determining the phase of the drive waveform.
The setting means is
As the phase difference when the second drive mode is changed, the phase difference between the phase corresponding to the rotation position of the rotor in the first drive mode and the phase of the drive waveform is set for the determination means. The first setting means to be performed,
The motor driving device according to claim 1, further comprising a second setting means for setting a target phase difference for driving with respect to the determination means.

A third setting means for setting the change time from the phase difference set by the first setting means to the change to the target phase difference set by the second setting means is further provided.
When the rotor is inverted in the second rotation direction, the control means changes to the second drive mode and takes the change time set by the third setting means to reach the target phase difference. The motor drive device according to claim 2, wherein the control for changing the phase difference is performed.

The control means reverses the rotation of the rotor, and the direction of the speed calculated from the change in the rotation position of the rotor detected by the detection means is reversed, and the speed is a preset speed. The motor drive device according to any one of claims 1 to 3, wherein the control for changing to the first drive mode is performed when the speed is reached.

When the control means controls the rotor to be inverted, the third setting means has the change time corresponding to the rotation speed of the rotor before the inversion, or the rotation speed before the inversion and the target rotation after the inversion. The motor drive device according to claim 3, wherein the change time corresponding to the difference from the speed is set.

When the control means controls to invert the rotor in an advance angle state in which the phase of the drive waveform is ahead of the phase of the rotation position of the rotor, the third setting means is before the inversion of the rotor. To set the change time corresponding to the phase angle representing the advance angle state of, or the change time corresponding to the difference between the phase angle representing the advance angle state before inversion and the phase angle representing the advance angle state after inversion. The motor driving device according to claim 3.

A storage means for storing data representing the relationship between the phase difference and the rotation speed of the rotor is provided.
The motor drive device according to claim 2 or 3, wherein the second setting means sets the target phase difference using the data stored in the storage means.

The control means controls to drive the rotor at a constant speed in the first drive mode.
The rotor is decelerated in the second drive mode, the rotor is inverted and then accelerated, and the second drive mode is changed to the first drive mode to speed the rotor again at a constant speed. The motor driving device according to any one of claims 1 to 7, wherein the motor driving device is controlled to be driven by the motor.

The control means is
After controlling the rotor to rotate in the first rotation direction in the first drive mode,
When the rotor is inverted in the second rotation direction, the rotor is inverted by changing to the second drive mode and having the setting means set the phase difference for generating the torque in the second rotation direction. The first control to change to the first drive mode again after the end, and
In the state where the rotor is rotated in the first rotation direction in the second drive mode, the setting means is set to set the phase difference for generating the rotation torque in the second direction, and the rotor is set to the second rotation. The second control of rotating in the second direction in the drive mode is executed.
The motor driving device according to claim 1.

It is a control method executed by a motor drive device that drives the rotation of the rotor.
A generation step of acquiring the output of the detection means for detecting the rotation position of the rotor and generating a drive waveform, and
It has a control step of controlling to synchronize the phase of the rotation position with the phase of the drive waveform.
In the generation step, a setting process for setting a phase difference between the rotation position and the drive waveform is performed in a state where the phase of the rotation position and the phase of the drive waveform are synchronized.
In the control step,
The first drive mode in which the rotor is rotated according to the drive waveform generated in the generation step without using the output of the detection means, and the phase difference set by the setting process using the output of the detection means. Control is performed to switch from the second drive mode for rotating the rotor according to the drive waveform generated in the generation step.
If an instruction to invert the rotor in the second rotation direction is input while the rotor is controlled to rotate in the first rotation direction in the first drive mode, the rotor is rotated in the first rotation direction . According to the drive waveform generated by the phase difference setting that changes to the second drive mode while rotating in the rotation direction of the rotor and generates a torque that reverses the rotation direction of the rotor in the second rotation direction. A method for controlling a motor drive device, wherein the rotor is driven, and after the rotation of the rotor is completed, control for changing to the first drive mode is performed again.