Electronic speed control system for vehicles

Details Electronic speed control system for vehicles Electronic speed control system for vehicles

1980-06-16

1982-11-16

Peters, Jr., Joseph F.

Motor vehicles

With means responsive to speed of vehicle for maintaining...

Including electrically actuated servomechanism

123352, B60K 3100

Patent

active

043591256

ABSTRACT:
In a speed control system for vehicles, a speed difference calculation circuit calculates an absolute value of a time difference between a predetermined period of time corresponding with a desired speed and an instant period of time corresponding with the actual speed, an acceleration calculation circuit calculates an absolute value of a time difference between the respective instant periods of time, and a correction signal generator calculates a sum of the absolute values in consideration with the actual speed when each sign of the calculated time differences is positive or negative and calculates a difference between the absolute values in consideration with the actual speed when respective signs of the calculated time differences are opposite to each other. The signal generator selectively produces correction signals related to the calculated sum and the calculated difference. A distribution circuit produces a control signal in response to the respective correction signals, and an actuator controls the opening angle of the engine throttle in response to the control signal.

REFERENCES:
patent: 3891046 (1975-06-01), Oicles
patent: 3983954 (1976-10-01), Noddings et al.
patent: 4098367 (1978-07-01), Fleischer
patent: 4121273 (1978-10-01), Jarrett et al.
patent: 4250854 (1981-02-01), Matsui et al.

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