MOTOR CONTROL DEVICE

• Main Author: SONE TAKAYUKI
• Format: Patent
• Language: English; Japanese
• Published: 07.07.2022
• Subjects: ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

To obtain a good operation feeling without reducing response performance of a drive motor.SOLUTION: A motor control device (30) controls a drive motor (21) that outputs driving force to a wheel. The motor control device includes: an accelerator operation unit (31) that accepts an accelerator operation; a change operation unit (42) that accepts a change operation for the driving force of the drive motor; a rotational speed sensor (47) that detects a motor rotational speed of the drive motor; a calculation circuit (51) that calculates an instruction value, based on an amount of accelerator operation, the motor rotational speed, and an amount of change operation; and a control circuit (71) that controls the driving force of the drive motor in accordance with the instruction value from the calculation circuit. The calculation circuit forms a virtual clutch for changing a power transmission ratio between the drive motor and a wheel in accordance with the amount of change operation and calculates an instruction value corresponding to a coasting travel matching the motor rotational speed when the virtual clutch is shut off.SELECTED DRAWING: Figure 2 【課題】駆動モータの応答性能を低減させることなく、良好な操作フィーリングを得る。【解決手段】モータ制御装置（３０）は、車輪に対して駆動力を出力する駆動モータ（２１）を制御する。モータ制御装置には、アクセル操作を受け付けるアクセル操作部（３１）と、駆動モータの駆動力の変更操作を受け付ける変更操作部（４２）と、駆動モータのモータ回転速度を検出する回転速度センサ（４７）と、アクセル操作量、モータ回転速度、変更操作量に基づき指示値を算出する算出回路（５１）と、算出回路からの指示値に応じて駆動モータの駆動力を制御する制御回路（７１）と、が設けられている。算出回路が、変更操作量に応じて駆動モータと車輪の間の動力伝達割合を変更する仮想クラッチを形成し、仮想クラッチの遮断時にモータ回転速度に応じた惰行走行に相当する指示値を算出している。【選択図】図２