Active noise and vibration control system
US5802184A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 1996 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Aug 15, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/3027
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Vibrational energy in a first frequency range within a vehicle or the like is controlled by an active vibration control system which includes a sensor, controller, driver, actuator and actuator power dissipation reduction circuit. The controller provides a control signal to a Class-D power amplifier operating at a second higher frequency to generate an output signal to the actuator in the frequency range of the noise/vibration to be controlled resulting in a force output from the actuator controlling vibration and/or noise in a passenger compartment of the vehicle. The actuator power dissipation reduction circuit reduces high frequency energy transients with in-series inductors to prevent heat inducing eddy currents in the actuator without additional current flow in the power amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.