PROBLEM TO BE SOLVED: To provide a controller that is able to hinder synchronization shift between a plurality of arithmetic processing sections without complicating a configuration, and to provide a motor control device, and an electrically-driven power steering device.SOLUTION: A motor control device of EPS generates a PWM signal, and comprises a first arithmetic processing section 31 and a second arithmetic processing section 32, each of which comprises an oscillator individually connected thereto. The arithmetic processing sections 31 and 32 respectively have: triangular wave generating sections 44 and 54 that generate triangular waves W1 and W2, used as references for PWM signals P1 and P2; and synchronous signal output sections 46 and 56 that respectively generate and output synchronous signals Sp1 and Sp2 that vary so as to be able to grasp the respective high level and low level states of the triangular waves W1 and W2. The second arithmetic processing section 32 has a frequency adjustment section 57 that adjusts the frequency of a triangular wave W2 on the basis of a temporal difference between the synchronous signals Sp1 and Sp2 so as to decrease the temporal difference.SELECTED DRAWING: Figure 3
【課題】構成を複雑化させることなく複数の演算処理部の間で同期ずれを抑制することができる制御装置、モータ制御装置、及び電動パワーステアリング装置を提供する。【解決手段】EPSのモータ制御装置は、PWM信号を生成するものであって、発振器がそれぞれ個別に接続されてなる第1演算処理部31及び第2演算処理部を備えている。各演算処理部31,32は、各PWM信号P1,P2の基準となる各三角波W1,W2を生成する各三角波生成部44,54と、各三角波W1,W2のハイレベル及びローレベルの状態を把握可能に変化する各同期用信号Sp1,Sp2を生成して出力する各同期用信号出力部46,56をそれぞれ有している。そして、第2演算処理部32は、各同期用信号Sp1,Sp2の時間差に基づいて、当該時間差が小さくなるように三角波W2の周波数を調整する周波数調整部57を有するようにしている。【選択図】図3
CONTROLLER, MOTOR CONTROL DEVICE, AND ELECTRICALLY-DRIVEN POWER STEERING DEVICE
制御装置、モータ制御装置、及び電動パワーステアリング装置
2017-12-28
Patent
Electronic Resource
Japanese
MOTOR CONTROLLER AND ELECTRICALLY-DRIVEN POWER STEERING DEVICE
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