Motor control apparatus
US-2019363652-A1 · Nov 28, 2019 · US
Motor control device and machine tool
US11211887B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11211887-B2 |
| Application number | US-202016860110-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 28, 2020 |
| Priority date | May 31, 2019 |
| Publication date | Dec 28, 2021 |
| Grant date | Dec 28, 2021 |
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- Title
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Abstract
Official abstract text for this publication.
A motor control device according to an aspect of the present disclosure controls a motor by switching between speed control and position control, and sets a maximum voltage applied to the motor during the position control to lower than a maximum voltage applied to the motor during the speed control.
First claim
Opening claim text (preview).
What is claimed is: 1. A motor control device which controls a motor by switching between speed control and position control, the motor control device comprising: a power source, wherein the motor control device sets a maximum voltage applied to the motor during the position control to lower than a maximum voltage applied to the motor during the speed control, the maximum voltage applied to the motor during the speed control is a rated voltage of the power source, and the maximum voltage applied to the motor during the position control is an actual voltage of the power source. 2. The motor control device according to claim 1 , comprising an induction motor control section which sets a speed of the motor at which starting to decrease d-phase current and q-phase current during the position control to lower than during the speed control. 3. The motor control device according to claim 1 , comprising a synchronous motor control section which sets a speed of the motor at which starting to apply d-phase current during the position control to lower than during the speed control. 4. A machine tool comprising: a motor control device according to claim 1 ; and a motor which is controlled by the motor control device. 5. A motor control device which controls a motor by switching between speed control and position control, comprising: an induction motor control section which sets a speed of the motor at which starting to decrease d-phase current and q-phase current during the position control to lower than during the speed control, wherein the motor control device sets a maximum voltage applied to the motor during the position control to lower than a maximum voltage applied to the motor during the speed control. 6. A motor control device which controls a motor by switching between speed control and position control, comprising: a synchronous motor control section which sets a speed of the motor at which starting to apply d-phase current during the position control to lower than during the speed control, wherein the motor control device sets a maximum voltage applied to the motor during the position control to lower than a maximum voltage applied to the motor during the speed control.
Assignees
Inventors
Classifications
- H02P21/18Primary
Estimation of position or speed · CPC title
characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path · CPC title
Loop switch, speed loop then position loop, mode switch · CPC title
Adaptive control, i.e. adjusting itself to have a performance which is optimum according to a preassigned criterion · CPC title
Driving working spindles · CPC title
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Frequently asked questions
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- What does patent US11211887B2 cover?
- A motor control device according to an aspect of the present disclosure controls a motor by switching between speed control and position control, and sets a maximum voltage applied to the motor during the position control to lower than a maximum voltage applied to the motor during the speed control.
- Who is the assignee on this patent?
- Fanuc Corp
- What technology area does this patent fall under?
- Primary CPC classification H02P21/18. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 28 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).