Invention Grant
- Patent Title: Motor controller and electronic power steering apparatus
- Patent Title (中): 电机控制器和电动助力转向装置
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Application No.: US12935774Application Date: 2009-03-30
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Publication No.: US08541965B2Publication Date: 2013-09-24
- Inventor: Takeshi Ueda , Yuji Kariatsumari , Shigeki Nagase , Noboru Niguchi , Hiroshi Sumasu
- Applicant: Takeshi Ueda , Yuji Kariatsumari , Shigeki Nagase , Noboru Niguchi , Hiroshi Sumasu
- Applicant Address: JP Osaka-shi
- Assignee: JTEKT Corporation
- Current Assignee: JTEKT Corporation
- Current Assignee Address: JP Osaka-shi
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2008-091978 20080331
- International Application: PCT/JP2009/056496 WO 20090330
- International Announcement: WO2009/123113 WO 20091008
- Main IPC: H02P6/08
- IPC: H02P6/08
Abstract:
A command current setting portion has a target value corrector that calculates d-axis and q-axis current command values idc, iqc that are to be supplied to an open-loop controller, based on d-axis and q-axis current target values id*, iq*. When d-axis and q-axis voltage target value vd*, vq* calculated from the d-axis and q-axis current target values id*, iq* by the motor circuit equations exceed a voltage limit, this target value corrector 26 corrects the d-axis and q-axis current target values id*, iq* by the field weakening control such that d-axis and q-axis voltages vd, vq and d-axis and q-axis currents id, iq satisfy √(vd2+vq2)≦Vlim and √(id2+iq2)≦Ilim respectively. The d-axis and q-axis current command values idc, iqc are obtained by this correction.
Public/Granted literature
- US20110025238A1 MOTOR CONTROLLER AND ELECTRONIC POWER STEERING APPARATUS Public/Granted day:2011-02-03
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