Bearingless motor
US-2024136906-A1 · Apr 25, 2024 · US
Controller for brushless DC motor with low torque ripple and method therefor
US9178452B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9178452-B2 |
| Application number | US-201414146096-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 2, 2014 |
| Priority date | Jan 2, 2014 |
| Publication date | Nov 3, 2015 |
| Grant date | Nov 3, 2015 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A controller for a BLDC motor includes a pulse width modulator and a control circuit. The pulse width modulator provides at least one phase control signal for a corresponding phase of the BLDC motor with a pulse width determined by a duty cycle signal. The duty cycle adjustment circuit has an input for receiving the at least one phase control signal, and an output for providing a corresponding modified phase control signal by adjusting widths of pulses of the at least one phase control signal when an average current in said corresponding phase exceeds a threshold.
First claim
Opening claim text (preview).
What is claimed is: 1. A controller for a BLDC motor, comprising: a pulse width modulator for providing at least one phase control signal for a corresponding phase of the BLDC motor with a pulse width determined by a duty cycle signal; and a duty cycle adjustment circuit having a first input for receiving said at least one phase control signal, a second input for receiving a measured current signal, and an output, wherein said duty cycle adjustment circuit integrates said measur…
Assignees
Inventors
Classifications
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9178452B2 cover?
- A controller for a BLDC motor includes a pulse width modulator and a control circuit. The pulse width modulator provides at least one phase control signal for a corresponding phase of the BLDC motor with a pulse width determined by a duty cycle signal. The duty cycle adjustment circuit has an input for receiving the at least one phase control signal, and an output for providing a corresponding …
- Who is the assignee on this patent?
- Silicon Lab Inc
- What technology area does this patent fall under?
- Primary CPC classification H02P6/10. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 03 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).