Electricity: motive power systems – Positional servo systems – Pulse-width modulated power input to motor
Patent
1985-09-17
1987-06-23
Dobeck, Benjamin
Electricity: motive power systems
Positional servo systems
Pulse-width modulated power input to motor
318606, 332 10, 123361, G05B 1128
Patent
active
046755896
ABSTRACT:
In a method for producing a pulsed setting voltage (v). said voltage is pulse-duration modulated with an electric control variable. The setting voltage serves to act on a setting drive having an inductance, particularly an electric motor setting drive (9) of a throttle valve (11) of an internal combustion engine. In order to obtain at the same time good periodic excitation of the setting drive as well as a low electric loss power in the setting drive, the setting voltage which is pulsed with a high clock frequency (f.sub.0) is pulse-duration modulated with a low fundamental-modulation frequency (f.sub.m) as well as a control variable.
REFERENCES:
patent: 3486090 (1969-12-01), Auvil
patent: 3548865 (1970-12-01), Pouinger
patent: 4482850 (1984-11-01), Sonada et al.
Ruschek Gerhard
Sausner Andreas
Dobeck Benjamin
Farber Martin A.
VDO Adolf Schindling AG
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