Method and a device for increasing the linearity of a servo syst

Details Method and a device for increasing the linearity of a servo syst Method and a device for increasing the linearity of a servo syst

1980-10-01

1983-10-11

Bentley, Stephen C.

Electricity: motive power systems

Positional servo systems

Antistatic friction features

89 41LE, F41G 506, G05B 1300

Patent

active

044095317

ABSTRACT:
The invention relates to a method and a device for increasing the linearity of a servo system, for instance a gun servo. The servo system comprises an oscillator (6) having a fixed frequency for superimposing a so-called dither signal on the control signal of the servo system. The frequency of the dither signal is so chosen below, about or just above the upper frequency limit of the servo system. The linear effect produced by the dither signal results in a higher gain attained in the system even for very small signals.

REFERENCES:
patent: 1959805 (1934-05-01), Wittkuhns et al.
patent: 2470099 (1949-05-01), Hall
patent: 2569818 (1951-10-01), Lee
patent: 2581149 (1952-01-01), Shaw
patent: 2688112 (1954-08-01), Wimberly
patent: 3430536 (1969-03-01), Oelrich
198 USPQ210, In re Oelrich and Divigard, Jun. 15, 1978.

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