Automatic vehicle guidance systems

Details Automatic vehicle guidance systems Automatic vehicle guidance systems

1973-07-31

1977-03-01

Dobeck, B.

Electricity: motive power systems

Positional servo systems

Vehicular guidance systems with single axis control

318 16, 318608, 318562, G05B 19100

Patent

active

040104095

ABSTRACT:
In a frequency selective steering system for automatic vehicle guidance, a phase locked loop is used to derive from a sum signal containing wanted and unwanted signal frequencies a reference signal equal in phase and frequency to the wanted signal. The reference signal is used to derive from a difference signal also containing wanted and unwanted signal frequencies an error signal dependent on the phase of the wanted signal only. The error signal is used to control the steering of the vehicle.

REFERENCES:
patent: 3587100 (1971-06-01), Doremus
patent: 3669208 (1972-06-01), Brooke
patent: 3669209 (1972-06-01), Brooke
patent: 3768586 (1973-10-01), Thompson et al.

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