Electricity: motive power systems – Plural diverse motor controls – Motor-reversing
Patent
1995-11-03
1996-12-17
Ro, Bentsu
Electricity: motive power systems
Plural diverse motor controls
Motor-reversing
318286, 318468, 318471, E05F 1516
Patent
active
055857027
ABSTRACT:
A closure system for a motor vehicle includes a closure, a closure frame, an electric motor, a control switch, an electrical power source, first and second displacement sensors, a temperature sensor, a current sensor for a current being drawn by the electric motor, and a microprocessor. The first and second displacement sensors each operably generate a signal indicative of closure movement. The microprocessor is electrically connected to the control switch, the electric motor, the first and second displacement sensors, the temperature sensor and the current sensor. The microprocessor electrically connects the motor with the power source responsive to a condition of the control switch. The microprocessor also converts the temperature sensed to an electrical signal indicative of the temperature, and converts the current sensed to an electrical signal indicative of motor current. The microprocessor uses the signals for current and temperature to calculate a temperature compensated drag force of the closure at a number of predetermined closure positions. The microprocessor determines the closure position by using signals from the displacement sensors. The microprocessor compares the temperature compensated drag force with a reference drag force and reverses the motor when the compensated drag force is greater than the reference drag force.
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Jackson James A.
McCann Roy A.
ITT Automotive Electrical Systems Inc.
Lewis J. Gordon
Ro Bentsu
Twomey Thomas N.
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