Electricity: motive power systems – Positional servo systems – Vehicular guidance systems with single axis control
Patent
1974-07-29
1976-03-02
Schaefer, Robert K.
Electricity: motive power systems
Positional servo systems
Vehicular guidance systems with single axis control
318635, G05D 100
Patent
active
039420876
ABSTRACT:
To prevent sudden and violent control swings in the guidance system of vehicles which are guided in a guide path by sensing an electrical or magnetic field derived from a guide track conductor, which sensed field is evaluated in a servo steering system to maintain a transducer at a given distance from the conductor, a limiter stage is provided to which the steering command signal is applied to limit the command signal to predetermine swings; preferably, a low pass filter is also connected to the transducer output to have the command signal applied thereto, the output of the low pass filter being connected to the limiter stage to permit wide, gradual control swings of the servo system while inhibiting wide, rapid swings.
REFERENCES:
patent: 3160880 (1964-12-01), Aires
patent: 3201675 (1965-08-01), Curran et al.
patent: 3431475 (1969-03-01), Wesner
patent: 3510737 (1970-05-01), Brown et al.
patent: 3633088 (1972-01-01), Kupersmith
patent: 3643073 (1972-02-01), Sawamura
patent: 3701992 (1972-10-01), Allen
patent: 3758838 (1973-09-01), Wright
patent: 3787726 (1974-01-01), Krapp
Maisch Wolfgang
Rubel Erich
Feldhaus John J.
Robert Bosch G.m.b.H.
Schaefer Robert K.
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