EP 0179219 A3 19880127 - METHOD AND APPARATUS FOR PRODUCING A TIME-VARYING POSITION CONTROL VOLTAGE
Title (en)
METHOD AND APPARATUS FOR PRODUCING A TIME-VARYING POSITION CONTROL VOLTAGE
Publication
Application
Priority
DE 3434644 A 19840921
Abstract (en)
[origin: US4675589A] 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 (f0) is pulse-duration modulated with a low fundamental-modulation frequency (fm) as well as a control variable.
IPC 1-7
IPC 8 full level
F02D 11/10 (2006.01); F02D 41/20 (2006.01); G05B 11/26 (2006.01); H02P 7/29 (2006.01)
CPC (source: EP US)
F02D 11/10 (2013.01 - EP US); F02D 41/20 (2013.01 - EP US); F02D 2011/102 (2013.01 - EP US); F02D 2041/2027 (2013.01 - EP US)
Citation (search report)
- [X] EP 0118175 A2 19840912 - KASIEWICZ STANLEY JOSEPH
- [X] GB 2108717 A 19830518 - SONY CORP
- [A] GB 1016205 A 19660105 - VDO SCHINDLING
- [A] US 4217867 A 19800819 - ELY JEFFREY A [US], et al
Designated contracting state (EPC)
DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0179219 A2 19860430; EP 0179219 A3 19880127; DE 3434644 A1 19860403; JP S6181194 A 19860424; US 4675589 A 19870623
DOCDB simple family (application)
EP 85110402 A 19850820; DE 3434644 A 19840921; JP 20673385 A 19850920; US 77694585 A 19850917