Method for voltage feedback for current mode linear motor driver
US7205736B2 · kind B2 · utility
3Cited by
10References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2003 |
| Grant date | Apr 17, 2007 |
| Priority date | — |
| Expiry date | Mar 18, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2209/01
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Methods and systems for driving a motor are disclosed. A center tap voltage and a desired center tap voltage are used to generate a voltage feedback. A power amplifier receives a reference current and the voltage feedback. The power amplifier provides a phase current to a phase of a motor. The phase current is substantially centered about the desired center tap voltage as a consequence of the voltage feedback. Thus, high-side to low-side or state to state current variations are reduced thereby reducing the occurrence of problems such as torque ripple and back EMF.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.