Invention Grant
- Patent Title: Method for controlling the current intensity of the electric current flowing through an inductive consumer and a corresponding circuit configuration
- Patent Title (中): 用于控制流过感应消费者的电流的当前强度和相应电路配置的方法
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Application No.: US14424534Application Date: 2013-07-31
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Publication No.: US09438097B2Publication Date: 2016-09-06
- Inventor: Dieter Schwarzmann , Marco Martini , Christian Klein , Thomas Wieja , Bernd Mueller , Uwe Guenther , Alexander Herrmann , Steffen Reinhardt , Beate Leibbrand , Christian Lammers
- Applicant: Robert Bosch GmbH
- Applicant Address: DE Stuttgart
- Assignee: ROBERT BOSCH GMBH
- Current Assignee: ROBERT BOSCH GMBH
- Current Assignee Address: DE Stuttgart
- Agency: Norton Rose Fulbright US LLP
- Priority: DE102012215155 20120827
- International Application: PCT/EP2013/066058 WO 20130731
- International Announcement: WO2014/032893 WO 20140306
- Main IPC: H02M1/08
- IPC: H02M1/08 ; H02M3/156 ; H01F7/18 ; G01R19/00 ; H02M3/155

Abstract:
A method is provided for controlling the current intensity of the electric current flowing through an inductive consumer, the consumer being connected in series to a switching device and a current measuring unit, and in parallel to a free-wheeling element, and the switching device being activated for adjusting the current intensity during a pulse width modulation period. It is provided that a mean load voltage to be set during the pulse width modulation period is determined from an input current intensity with the aid of a first controller, the mean load voltage being set in the pulse width modulation period with the aid of the switching device at the consumer, the mean load voltage or a setpoint load voltage determined with the aid of a second controller from a predefined setpoint current intensity being fed to a model adapted to the consumer, and the input current intensity being ascertained from the difference between the predefined setpoint current intensity and a difference variable between an actual current intensity through the consumer and a model current intensity determined with the aid of the model. A circuit configuration for implementing the method is also provided.
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