Brake force transducer for electric brakes
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United States of America Patent
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Jul 28, 2009
Grant Date -
Nov 15, 2007
app pub date -
May 11, 2006
filing date -
May 11, 2006
priority date (Note) -
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Abstract
An electric brake actuator for the brake system of an aircraft is presented. A brake actuator includes a piston driven by a cylindrical nut and screw arrangement, driven by an appropriate motor of the actuator. Application of brake force results in a reactionary force that deflects the top cover of the actuator. The axial component of this deflection correlates directly with the brake force applied. A beam is interposed between this cover and a top cap, such that deflection of the beam correlates to applied brake face. Piezo-resistive devices are connected to the beam and, through a whetstone bridge, provide an electrical output signal correlating to applied brake force.
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