PROBLEM TO BE SOLVED: To provide a motor control device capable of reducing a sense of discontinuity in steering assistance and achieving smooth handling by flexibly adjusting a current command value of a normal system in a case where a failure occurs in any system in multi-system motor control, and to provide an electric power steering device and a vehicle mounting the same.SOLUTION: A motor control device comprises: a motor drive circuit for each coil system that supplies a drive current to a motor having a multi-system motor coil; and a control calculation part that calculates a current command value for each coil system for driving the motor, and when a failure occurs at the motor coil or the motor drive circuit in any system, performs first change of changing characteristics of the current command value of a normal system to first characteristics that form characteristics equivalent to a total sum of current command values at a normal time, and after the first change is performed, performs second change of changing the characteristics of the current command value to second characteristics with a suppressed output compared with the first characteristics, and controls the motor drive circuit.SELECTED DRAWING: Figure 4
【課題】多系統でのモータ制御においていずれかの系統に故障が発生した場合、正常系統の電流指令値の調整を柔軟に行うことによりアシストの不連続感を改善し、スムーズなハンドリングを可能にするモータ制御装置並びにそれを搭載した電動パワーステアリング装置及び車両を提供する。【解決手段】多系統モータ巻線を有するモータに駆動電流を供給する巻線系統毎のモータ駆動回路と、モータを駆動するための巻線系統単位の電流指令値を演算し、いずれかの系統のモータ巻線又はモータ駆動回路に故障が発生したら、正常である系統の電流指令値の特性を、正常時の電流指令値の総和と同等な特性を形成する第1特性に変更する第1変更を実施し、第1変更を実施した後、第1特性より出力を抑えた第2特性に電流指令値の特性を変更する第2変更を実施してモータ駆動回路を制御する制御演算部とを備える。【選択図】図4
MOTOR CONTROL DEVICE, AND ELECTRIC POWER STEERING DEVICE AND VEHICLE MOUNTING THE SAME
モータ制御装置並びにそれを搭載した電動パワーステアリング装置及び車両
2016-10-13
Patent
Electronic Resource
Japanese
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