DC torque motor actuated anti-lock brake controller
A wheel lock control system is described for limiting the brake pressure applied to the brake of a vehicle wheel traveling over a road surface, the system comprising: an actuator for controlling the brake pressure to the brake of the wheel, the actuator including a torque motor for generating a motor torque in response to motor current to control the applied brake pressure in accordance with the value of the motor torque, the motor torque having a value proportional to the value of the motor current; means for determining the tire torque tending to accelerate the wheel during the application of brake pressure; means for storing the value of motor current corresponding to the maximum determined value of tire torque; means for detecting an incipient wheel lockup condition; and means for establishing the motor current following a detected incipient wheel lockup condition at a value having a predetermined relationship to the stored value of motor current to control the brake pressure at a predetermined braking condition.
- Assignee:
- General Motors Corp., Detroit, MI
- Patent Number(s):
- US 4807134
- OSTI ID:
- 6196569
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330600* -- Advanced Propulsion Systems-- Vehicle Design Factors
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
BRAKES
COMPUTERIZED CONTROL SYSTEMS
CONTROL
CONTROL SYSTEMS
CURRENTS
DETECTION
DIRECT CURRENT
ELECTRIC CURRENTS
ELECTRIC MOTORS
EQUIPMENT PROTECTION DEVICES
FAILURES
MACHINE PARTS
MOTORS
OPERATION
PRESSURE CONTROL
SAFETY
TORQUE
VEHICLES
WHEELS