发明授权
- 专利标题: Hybrid motor
- 专利标题(中): 混合电动机
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申请号: US237154申请日: 1999-01-25
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公开(公告)号: US6093995A公开(公告)日: 2000-07-25
- 发明人: Kenneth B. Lazarus , Edward F. Crawley , Farla M. Russo , Erik Saarmaa
- 申请人: Kenneth B. Lazarus , Edward F. Crawley , Farla M. Russo , Erik Saarmaa
- 申请人地址: MA Cambridge
- 专利权人: Active Control eXperts, Inc.
- 当前专利权人: Active Control eXperts, Inc.
- 当前专利权人地址: MA Cambridge
- 主分类号: H01L41/09
- IPC分类号: H01L41/09 ; H02N2/06 ; H02H2/02 ; H01L41/08
摘要:
A hybrid actuator includes strain actuated elements that displace fluid to move a piston, with the elements forming a fluid housing, and being oriented and actuated to optimize force, stroke or bandwidth. In one preferred embodiment the elements are cylinders enclosing the fluid, with radial and axial components of strain-induced dimensional change adding together to enhance displacement. In another preferred embodiment, piezo bender elements produce large stroke, high bandwidth movements. Strokes of up to fifty percent of actuator length, and bandwidths above 500 Hz are achieved in light weight electrically actuated devices free of external piping or hydraulics. The actuator is readily integrated into a gate valve, sub-woofer, or other driven device.
公开/授权文献
- US5514240A Method for incorporating a carrier element 公开/授权日:1996-05-07