Vehicle speed control systems

Details Vehicle speed control systems Vehicle speed control systems

1980-07-24

1982-06-22

Miller, J. D.

Electricity: electrical systems and devices

Electrical speed signal processing systems

With speed comparison

361236, 361239, 180178, B60K 3100

Patent

active

043365663

ABSTRACT:
A vehicle speed system is described in which an electrical signal representing actual vehicle speed is compared with a stored signal representing desired vehicle speed. Any speed error is used in a servo loop to generate a control signal which tends to reduce the error to zero. In addition, signals representing the actual and desired vehicle speeds are compared in a comparator unit so as to produce a disabling signal when the actual vehicle speed either exceeds the desired speed by more than a predetermined amount, or falls below the desired speed by more than a predetermined amount, (e.g. because road conditions prevent the vehicle engine from driving the vehicle at or close to the desired speed). This enabling signal is used to switch the control system out of operation.

REFERENCES:
patent: 3570622 (1971-03-01), Wisner
patent: 3757130 (1973-09-01), Uchiyama et al.
patent: 3952829 (1976-04-01), Gray
patent: 4196466 (1980-04-01), Noddings et al.
patent: 4286306 (1981-08-01), Kraus et al.

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