Brakes – Operators – Electric and mechanical
Reexamination Certificate
2008-09-16
2008-09-16
Schwartz, Christopher P (Department: 3683)
Brakes
Operators
Electric and mechanical
C188S158000
Reexamination Certificate
active
11490297
ABSTRACT:
A first method for estimating a torque/force exerted by a load against an actuator driven by an electric motor against the load includes measuring motor current of the electric motor and measuring a position/angle or speed/angular speed of the actuator and includes calculating the torque/force exerted by the load against the actuator using at least a difference between a calculated motor torque/force and a calculated actuator-experienced torque/force. A second method includes measuring input voltage of the electric motor instead of measuring motor current. A third method includes measuring both motor current and input voltage. In one example, without limitation, the actuator is an automotive electromechanical brake caliper.
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European Search Report dated Nov. 8, 2006.
English Translation of EP 1 482 290 A1.
Gayed Atef A.
Henry Rassem R.
Delphia Technologies, Inc.
McBain Scott A.
Schwartz Christopher P
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