Torque driving circuit
US7552637B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 2006 |
| Grant date | Jun 30, 2009 |
| Priority date | — |
| Expiry date | Sep 18, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P2015/0831
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A torque driver that includes a regulator circuit for mitigating zero-g discontinuity effects and deadbanding is presented. An accelerometer may comprise the torque driver and the torque driver may be arranged to receive a control signal from a control circuit that is coupled to deflection sensing circuitry. When the accelerometer undergoes an acceleration the deflection sensing circuitry generates an acceleration signal that is communicated to the control circuit. The control circuit responsively generates a control signal, which the torque driver users to balance a proof mass beam within the accelerometer. The regulator circuit mitigates zero-g discontinuity effects and deadbanding by preventing the torque signal from producing torque signals that simultaneously track the control signal. To do this, the regulator circuit may include a rectifying buffer and/or a modulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.