基于模糊控制的电力机车智能撒砂控制方法

Intelligent sanding control method for electric locomotive based on fuzzy control

在电力机车运行过程中,轮轨接触状态突然恶化时需采用增黏剂以改变轮轨黏着状态,撒砂是最常见的方法。为了使机车更好发挥牵引、制动性能,采用机车速度、蠕滑速度和轮缘加速度作为自动撒砂控制指标,以机车速度、蠕滑速度和轮缘加速度作为系统输入,以撒砂动作信号作为输出,建立模糊撒砂控制系统;然后根据系统的输出信号驱动撒砂装置阀门,实现自动撒砂。将撒砂动作信号与车轮实际空转情况进行对比,结果表明该方法能够在轮子发生空转时及时撒砂,且系统自动控制过程稳定;同时,与手动控制相比,在机车轮对发生空转或滑行期间可节约用砂。该方法综合考虑机车实际运行工况,提高撒砂控制的智能化,减少人工干预。

In the operation of electric locomotives,when the contact state between the wheel and rail suddenly deteriorates,a adhesive is needed to change the sticking state between the wheel and rail.Sanding is the most common method.In order to make the locomotive better perform traction and braking performance,this paper used locomotive speed,creep speed and rim acceleration as the control indicators of automatic sanding.The locomotive speed,creep speed and rim acceleration were used as the input of the system.The sand motion signal was used as the output of the system to establish a fuzzy sand control system;then the valve of the sanding device was driven according to the output signal of the system to achieve automatic sanding.In this paper,the sanding action signal was compared with the actual idling of the wheel.The results show that the method can sprinkle sand in time when the wheel of the locomotive is idling,and the system automatic control process is stable;at the same time,compared with the manual control,the wheel of the locomotive sand can be saved during idling or taxiing.The method comprehensively considers the actual operating conditions of the locomotive,improves the intelligence of the sand control,and reduces manual intervention.