MOTOR CONTROL DEVICE AND ELECTRIC POWER STEERING DEVICE,申请号JP20090136296-传众专利搜索

MOTOR CONTROL DEVICE AND ELECTRIC POWER STEERING DEVICE

申请公布号：JP2010284030(A)

申请号：JP20090136296

申请日期：2009.06.05

申请公布日期：2010.12.16

申请人：

JTEKT CORP

发明人：NAKAI MOTOO

分类号：H02P6/08;H02P6/16;H02P23/00

主分类号：H02P6/08

摘要：<P>PROBLEM TO BE SOLVED: To perform motor control with high accuracy by detecting a resistance value of a path including a power supply smoothing capacitor. <P>SOLUTION: An open loop control unit 22 calculates command voltages v<SB>d</SB>, v<SB>q</SB>on dq axis according to a circuit equation of a motor on the basis of command currents i<SB>d</SB><SP>*</SP>, i<SB>q</SB><SP>*</SP>on dq axis and the angular velocity ω<SB>e</SB>of the motor. A dq-axis/three-phase conversion unit 23 converts the command voltages v<SB>d</SB>, v<SB>q</SB>into three-phase command voltages V<SB>u</SB>, V<SB>v</SB>, and V<SB>w</SB>. A three-phase voltage correction unit 24 calculates a resistance value R<SB>C</SB>of a path including an electrolytic capacitor 16 on the basis of an inverter voltage value V<SB>I</SB>and a battery voltage V<SB>B</SB>respectively detected by a voltage sensor 15 and an inductance L of a wiring so as to correct the three-phase command voltages V<SB>u</SB>, V<SB>v</SB>, and V<SB>w</SB>on the basis of the calculated resistance value R<SB>C</SB>. <P>COPYRIGHT: (C)2011,JPO&INPIT