Invention Grant
- Patent Title: Compact two axis gimbal for control stick
- Patent Title (中): 紧凑型双轴万向节控制棒
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Application No.: US13657294Application Date: 2012-10-22
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Publication No.: US09126676B2Publication Date: 2015-09-08
- Inventor: Matthew P. DeCraene , Matthew Kramer , Nathan Thompson , Anton Petrou
- Applicant: Woodward MPC, Inc.
- Applicant Address: US IL Skokie
- Assignee: Woodward MPC, Inc.
- Current Assignee: Woodward MPC, Inc.
- Current Assignee Address: US IL Skokie
- Agency: Reinhart Boerner Van Deuren P.C.
- Main IPC: B64C13/04
- IPC: B64C13/04 ; B64C13/34 ; G05G5/03 ; G05G9/047

Abstract:
An electromechanical portion of the control stick includes a two-axis gimbal, with each axis including a mechanical gimbal structure supported by rolling element bearings, cam based centering mechanisms, linkages to connect a geared power-drive including a resolver commutated brushless DC motor and compound-planetary gearhead to provide active force feedback, and several electrically independent RVDT position sensors. The gearing architecture uses a fixed-cage, rotating internal gear arrangement on a planetary gearhead, which may be single or multi-stage. The output torque of the gearhead is provided by a feature on the outer housing of the rotating internal ring gear, allowing an axial placement of the entire power-drive in a more central location, reducing the moment load on the gearhead output cage bearings, and facilitating a compact drive arrangement of the gimbal using linkages. Additionally, a common power-drive can be used for both the roll and pitch axes.
Public/Granted literature
- US20130105634A1 COMPACT TWO AXIS GIMBAL FOR CONTROL STICK Public/Granted day:2013-05-02
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