发明授权
- 专利标题: ELECTROMAGNETIC ACTUATOR
- 专利标题(中): 电磁机构
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申请号: EP91907356.9申请日: 1991-03-22
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公开(公告)号: EP0522042B1公开(公告)日: 1996-06-26
- 发明人: STUART, Keith, O. , ASHBROOK, Bradley, J. , BULGATZ, Dennis, C.
- 申请人: AURA SYSTEMS, INC.
- 申请人地址: 2335 Alaska Avenue El Segundo, California 90245 US
- 专利权人: AURA SYSTEMS, INC.
- 当前专利权人: AURA SYSTEMS, INC.
- 当前专利权人地址: 2335 Alaska Avenue El Segundo, California 90245 US
- 代理机构: Godsill, John Kenneth
- 优先权: US499046 19900326
- 国际公布: WO9115051 19911003
- 主分类号: H02K41/02
- IPC分类号: H02K41/02 ; H02K33/18 ; H02K41/035 ; H02K1/17
摘要:
An improved electromagnetic actuator of the type comprising (a) a first assembly (12); (b) a second assembly (20) movable relative to the first assembly (12) along an axis of relative movement (30) in response to a command signal, the second assembly (20) comprising magnetic flux source means (44) for defining radially directed flux both in an inward and outward direction relative to the axis of relative movement (30); (c) coil assembly means for defining at least two coil segments (16) respectively disposed in the paths of the flux in the inward and outward directions; and (d) means for applying the command signal to the coil segments (16) so that a current flows in one direction around the axis (30) through the inward directed flux, and flows in the opposite direction around the axis (30) through the outward directed flux so that the flux/current force applied between the first and second assemblies (12 and 20) is additive. In accordance with another aspect the coil sections are wound onto a core element to provide an attached core design. Finally, a brushless actuator design is disclosed.
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