The invention discloses an active damping control method for an electrically driven automobile, which comprises the following steps of: S1, receiving and processing an input signal, carrying out high-frequency low-pass filtering on a motor rotating speed signal, and carrying out N-period average value filtering on a request torque; s2, a motor rotating speed signal is connected in series with a second-order high-pass filter through a second-order low-pass filter, and then the rotating speed fluctuation quantity in the rotating speed of the motor is calculated; s3, checking a two-dimensional table according to the filtered motor rotating speed and the motor request torque, and outputting corresponding PI control parameters; and S4, PI control calculation is conducted on the rotating speed fluctuation quantity in the S2 through a formula Torqueout = Kp * delta Spd + Ki * (delta Spd-delta Spdlast), the calculated torque is limited by the upper limit and the lower limit, and the output torque is obtained. According to the method, the active damping compensation torque calculated according to the fluctuation characteristics of the motor rotating speed signal is added to the torque request command, so that the conditions of motor rotating speed fluctuation and even vehicle body shaking are inhibited, and the driving comfort of the whole vehicle is improved.
本发明公开了一种电驱动汽车的主动阻尼控制方法,包括以下步骤:S1,接收并处理输入信号,对电机转速信号进行高频率的低通滤波,对请求扭矩进行N个周期平均值滤波;S2,将电机转速信号经过二阶低通滤波器串联二阶高通滤波器后,计算出电机转速中的转速波动量;S3,根据滤波后电机转速和电机请求扭矩查二维表,输出相应的PI控制参数;S4,将S2中转速波动量通过公式Torqueout=Kp·ΔSpd+Ki·(ΔSpd‑ΔSpdlast)进行PI控制计算,计算扭矩经过上下限限制,得到输出扭矩。本发明将根据电机转速信号的波动特征计算得到的主动阻尼补偿扭矩,附加到扭矩请求命令上,来抑制电机转速波动乃至车身抖动的情况,提升整车行驶舒适性。
Active damping control method for electrically driven automobile
一种电驱动汽车的主动阻尼控制方法
2023-08-29
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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