Invention Grant
US5523684A Electronic solenoid control apparatus and method with hall effect
technology
失效
电子电磁控制装置及方法与霍尔效应技术
- Patent Title: Electronic solenoid control apparatus and method with hall effect technology
- Patent Title (中): 电子电磁控制装置及方法与霍尔效应技术
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Application No.: US338723Application Date: 1994-11-14
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Publication No.: US5523684APublication Date: 1996-06-04
- Inventor: Daniel E. Zimmermann
- Applicant: Daniel E. Zimmermann
- Applicant Address: IL Peoria
- Assignee: Caterpillar Inc.
- Current Assignee: Caterpillar Inc.
- Current Assignee Address: IL Peoria
- Main IPC: G01D5/14
- IPC: G01D5/14 ; H01F7/123 ; H01F7/124 ; H01F7/18 ; G01B7/14 ; G01N27/72 ; G01R33/00 ; H01H47/12
Abstract:
In one aspect of the present invention, an electromagnetic actuator is disclosed. The electromagnetic actuator includes a plunger adapted to move between first and second positions, a pull coil adapted to receive electrical energy and responsively produce a high electromagnetic force causing the plunger to move from the first position to the second position, and a hold coil adapted to receive electrical energy and responsively produce a low electromagnetic force for maintaining the plunger at the second position. A sensing device is included to detect the magnetic flux density produced by the coils and responsively produce a position signal having a magnitude responsive to the position of the plunger. Advantageously, signal conditioning circuitry receives the position signal, and de-energizes the pull coil in response to the position signal indicating that the plunger is at the second position.
Public/Granted literature
- US4999013A Controllable interferometer Public/Granted day:1991-03-12
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