制动的更精确控制:高速动车组制动系统分级鲁棒控制方法

A More Accurate Two-level Robust Braking Control Method on High-speed EMUs

目前国内高速动车组制动控制在列车级的减速度控制方面仍是开环控制,而在车辆级的制动缸压力控制方面则为半闭环控制。为提高制动控制精度,文中提出了高速动车组制动系统的分级鲁棒控制方法。在车辆级基于滑模控制方法开发了直接对制动缸压力进行闭环控制的滑模控制器,可在中继阀存在10%压力输出误差的情况下保持±8 kPa的压力控制精度。在列车级基于自适应控制理论提出了新型的列车减速度闭环控制算法,实时估计列车制动不确定参数,计算减速度补偿量,提高列车实际减速度的控制精度。

For High-speed EMUs in China,braking control is still considered open loop in terms of deceleration control on the train level.And on the vehicle level,brake cylinder pressure control is semi-closed loop.In order to increase braking control accuracy,a two-level braking control method is proposed in this paper.On the vehicle level,a sliding mode brake cylinder pressure controller is developed based on a sliding mode control method.Control accuracy of the proposed pressure controller can be up to±8 kPa even if the relay valve has a 10%output error.On the train level,based on adaptive control theory,a novel closed loop deceleration controller is developed to estimate uncertain braking parameters and calculate deceleration compensation in real time,which can help increase deceleration control accuracy.