1970-02-01

Controlled Rotation of Braked Wheels 700113

Automatic skid control provides the rotation control needed to stop a wheeled vehicle safely through a control system which senses wheel speed, has control logic, and controls braking torque. This paper describes how these essential control functions are used on the vehicle.
Skid or rotation control can be provided for all braked wheels, either on an individual or paired wheel control basis, if maximum safety of vehicle operation is the primary consideration. If the major objective is to prevent complete loss of vehicle control, rotation control on the rear wheels only, either individual or paired, will be satisfactory, realizing, however, that steering control is lost when the front wheels lock up. To determine the final configuration, the performance as related to vehicle stability, directional control, stopping distance, tire damage, and relative cost must be evaluated. Depending on the requirements, cost can vary almost 300%; therefore, a compromise in the specified requirements may be necessary.

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