PROBLEM TO BE SOLVED: To provide a technique for suppressing generation of vibration in a vehicular body even in the case of a vehicular speed being equal to or lower than a given value.SOLUTION: A control method, for use in an electric vehicle that includes a motor for functioning as a travel power source and providing a vehicle with regenerative brake force and a friction brake part for providing the vehicle with frictional brake force, performs: detecting a motor rotation speed or a speed parameter that is proportional to the rotation speed; calculating an estimation value of disturbance torque exerted to the motor; detecting or estimating a frictional brake amount by the friction brake and correcting the disturbance torque estimation value on the basis of the frictional braking amount; and, as the electric vehicle becomes a given speed or slower, controlling the motor so that motor torque converges to the disturbance torque as a motor rotation speed or a speed parameter decreases, and reducing a correction amount for the disturbance torque when the frictional braking amount is equal to or higher than a given value when the electric vehicle is at the given speed or lower.SELECTED DRAWING: Figure 1
【課題】車両の速度が所定値以下の場合でも、車体に振動が発生するのを抑える技術を提供することを目的とする。【解決手段】走行駆動源として機能するとともに車両に回生制動力を与えるモータと、車両に摩擦制動力を与える摩擦制動部と、を備える電動車両の制御方法であって、モータの回転速度または当該回転速度に比例する速度パラメータを検出し、モータに作用する外乱トルク推定値を算出し、摩擦ブレーキによる摩擦制動量を検出または推定し、摩擦制動量に応じて外乱トルク推定値を補正する。そして、電動車両が所定車速以下になると、モータの回転速度または速度パラメータの低下とともにモータトルクが外乱トルクに収束するようにモータを制御し、電動車両が所定車速以下において摩擦制動量が所定値以上のとき、外乱トルクに対する補正量を低減する。【選択図】図1
ELECTRIC-VEHICULAR CONTROL METHOD AND ELECTRIC-VEHICULAR CONTROL APPARATUS
電動車両の制御方法、及び、電動車両の制御装置
2018-05-31
Patent
Electronic Resource
Japanese
ELECTRIC-VEHICULAR CONTROL METHOD AND ELECTRIC-VEHICULAR CONTROL APPARATUS
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