Invention Grant
- Patent Title: Method and circuit arrangement for controlling current in motors
- Patent Title (中): 用于控制电机电流的方法和电路装置
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Application No.: US13509801Application Date: 2010-11-18
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Publication No.: US09030150B2Publication Date: 2015-05-12
- Inventor: Bernhard Dwersteg
- Applicant: Bernhard Dwersteg
- Applicant Address: DE Hamburg
- Assignee: Trinamic Motion Control GmbH & Co. KG
- Current Assignee: Trinamic Motion Control GmbH & Co. KG
- Current Assignee Address: DE Hamburg
- Agency: WRB-IP LLP
- Priority: DE102009053564 20091118
- International Application: PCT/DE2010/075140 WO 20101118
- International Announcement: WO2011/060783 WO 20110526
- Main IPC: H02P8/00
- IPC: H02P8/00 ; H03F1/02 ; H02P27/10 ; H02P8/12

Abstract:
A method and circuit arrangement for controlling the motor current in an electric motor, in particular a stepper motor, by a chopper method is provided. In the method/circuit arrangement, the motor is operated with a coil current that follows a target coil current substantially more accurately at least at the zero crossing of the coil current. The method/circuit arrangement provides a good symmetry of the sinusoidal wave shape of the coil current with respect to the zero crossing of the coil current. The method is achieved in particular by the active control of the coil current both in the direction of a predefined target coil current and opposite the direction of the predefined target coil current with respect to upper or lower desired current values and a lowering or increasing of the upper or lower desired current values.
Public/Granted literature
- US20120274261A1 METHOD AND CIRCUIT ARRANGEMENT FOR CONTROLLING CURRENT IN MOTORS Public/Granted day:2012-11-01
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