A novel adaptive noise cancellation method for wheel speed signal of the anti-lock braking system/ anti-slip regulation（ABS/ASR） control system is proposed. Based on the spectrum distribution of vehicle＇s wheel spe...A novel adaptive noise cancellation method for wheel speed signal of the anti-lock braking system/ anti-slip regulation（ABS/ASR） control system is proposed. Based on the spectrum distribution of vehicle＇s wheel speed signal got from fast Fourier transform under various conditions, the high-pass filter is used to deal with original wheel speed signals sampled to get reference noise signal and the original wheel speed signals are used as adaptive filter＇s desired outputs. The difference between original signals and reference noise signals is used as the error signal for the adaptive FIR filter and also used as the whole adaptive noise cancellation system＇s final output. This method can obtain the noise signal on-line and is easy to use for. real control system, which is useful to improve the performance of integrate system ABS/ASR.展开更多
为了解决电动汽车在加速和制动过程中容易发生滑移和抖动、不能满足稳定性和舒适性的要求,提出了一种基于主从式非线性模型预测(nonlinear model prediction,NMP)直接转矩控制(direct torque controt,DTC)的电动汽车鲁棒控制策略。采用...为了解决电动汽车在加速和制动过程中容易发生滑移和抖动、不能满足稳定性和舒适性的要求,提出了一种基于主从式非线性模型预测(nonlinear model prediction,NMP)直接转矩控制(direct torque controt,DTC)的电动汽车鲁棒控制策略。采用双电机-单控制器主从式驱动模型,基于模糊逻辑控制器,在线确定权重因子的精确值,生成优化电动汽车驱动决策的最优切换状态,保证电机速度的精确跟踪。结合NMP-DTC电机控制方法,设计了一种模糊逻辑ASR/ABS控制器,以角加速度变化和滑移率变化为输入,以补偿转矩为输出变量,根据道路特性的变化提供补偿转矩,保证电动汽车行驶在最佳滑移率范围内,提高行驶的稳定性。基于MATLAB/Simulink进行变负载转矩电机跟踪和汽车纵向稳定性仿真,与参考速度进行对比分析。结果表明,所提出的主从式NMP-DTC的电动汽车ASR/ABS控制,在变负载下不仅电机跟踪轨迹误差降低,而且可保证在加速和制动过程中车辆的纵向稳定性控制。展开更多
基金Sponsored bythe National Natural Science Fundation of China (50122148)
文摘A novel adaptive noise cancellation method for wheel speed signal of the anti-lock braking system/ anti-slip regulation（ABS/ASR） control system is proposed. Based on the spectrum distribution of vehicle＇s wheel speed signal got from fast Fourier transform under various conditions, the high-pass filter is used to deal with original wheel speed signals sampled to get reference noise signal and the original wheel speed signals are used as adaptive filter＇s desired outputs. The difference between original signals and reference noise signals is used as the error signal for the adaptive FIR filter and also used as the whole adaptive noise cancellation system＇s final output. This method can obtain the noise signal on-line and is easy to use for. real control system, which is useful to improve the performance of integrate system ABS/ASR.
文摘为了解决电动汽车在加速和制动过程中容易发生滑移和抖动、不能满足稳定性和舒适性的要求,提出了一种基于主从式非线性模型预测(nonlinear model prediction,NMP)直接转矩控制(direct torque controt,DTC)的电动汽车鲁棒控制策略。采用双电机-单控制器主从式驱动模型,基于模糊逻辑控制器,在线确定权重因子的精确值,生成优化电动汽车驱动决策的最优切换状态,保证电机速度的精确跟踪。结合NMP-DTC电机控制方法,设计了一种模糊逻辑ASR/ABS控制器,以角加速度变化和滑移率变化为输入,以补偿转矩为输出变量,根据道路特性的变化提供补偿转矩,保证电动汽车行驶在最佳滑移率范围内,提高行驶的稳定性。基于MATLAB/Simulink进行变负载转矩电机跟踪和汽车纵向稳定性仿真,与参考速度进行对比分析。结果表明,所提出的主从式NMP-DTC的电动汽车ASR/ABS控制,在变负载下不仅电机跟踪轨迹误差降低,而且可保证在加速和制动过程中车辆的纵向稳定性控制。
