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Electromagnetic interference filter

A filter plate and electronic device technology, applied in the direction of reducing electrical interference, electrical components, reducing interference from fuel engine igniter equipment, etc., to achieve the effects of easy packaging, minimized conduction and radiation EMI emissions, and reduced capacitance requirements

Inactive Publication Date: 2005-02-02
BOSE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Integrated power electronics in drives can cause unacceptable conducted electromagnetic interference (EMI)

Method used

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  • Electromagnetic interference filter
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Examples

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Embodiment Construction

[0039] In an active electromechanical suspension system, power is supplied to the electromechanical suspension to help control the vertical acceleration of the sprung mass when the unsprung mass encounters a road block. The shock absorbers of a normal suspension can be replaced with controlled force transmissions that respond to commands from the control system. The transmission can be electric. The high currents required to provide the necessary power to active vehicle suspension systems can generate unwanted electromagnetic interference (EMI) that can interfere with radio reception and electronics in the vehicle. Additionally, it may be difficult to package an electric drive in the available space that can improve the forces and speeds required to operate as an active suspension drive.

[0040] exist figure 1 In the system 10 includes an active vehicle suspension transmission 12 . The transmission 12 includes an armature 14 that slides against a stator 16 . In this examp...

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Abstract

The electromechanical actuator in a vehicle suspension system includes a housing having a first section adapted to affix to a vehicle body and a second section adapted to affix to a vehicle wheel assembly suspended to the vehicle body, the first and second sections coupled to form a motor, electronic circuits including a power-switching devices disposed within a chamber of the housing and adapted to receive electrical power and to direct power to the motor, and a filter board including capacitors and inductors disposed within the chamber to suppress noise generated by the power-switching devices to an external DC power source.

Description

technical field [0001] The present invention relates to electromagnetic interference (EMI) filters. Background technique [0002] Active automotive suspensions may include electric drives. In an active suspension system, power is supplied to the suspension to help control the vertical acceleration of the sprung mass when the unsprung mass encounters a road block. Integrated power electronics in drives can cause unacceptable conducted electromagnetic interference (EMI). Contents of the invention [0003] In one aspect, the invention describes an electromechanical transmission comprising: in a vehicle suspension system, a housing having a first part adapted to be fixed to a vehicle body and a second part adapted to be fixed to a vehicle suspended from the vehicle body a wheel assembly, the first part and the second part combine to form an electric motor; electronics, including a power switching device mounted in the housing cavity, adapted to receive and transmit electrica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60G17/00B60G17/015B60G23/00F16F15/03H03H1/00H03H7/01H03H7/06H04B15/02H05K9/00
CPCH03H7/0115B60G17/015H04B15/025
Inventor 保罗·T·本德
Owner BOSE CORP
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