Torque sensor assembly for vehicle power steering systems
US10330542B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 20, 2017 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Apr 20, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L5/221
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A torque sensor assembly for use in a vehicle power steering system has magnets, coaxial first, second, and third flux closure members around the magnets, and first and second magnetic sensors. Each of the plurality of magnets emits a magnetic field. The second flux closure member is between the first and third flux closure members. The first and third flux closure members collect the magnetic fields having a first polarity. The second flux closure member collects the magnetic fields having a second polarity that is opposite the first polarity. The first and second magnetic sensors are positioned to have like polarity. The first sensor is between the first and second flux closure members. The second sensor is between the second and third flux closure members. A torque signal is calculated by subtracting a second signal generated by the second sensor from a first signal generated by the first sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.