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当列车运行在长大下坡道上,通常采用空气制动的周期制动调整速度。为了满足两次空气制动间充风时间和列车空走时间的要求,常常会造成列车的出坡速度与下一坡段的限制速度速差不合理。针对长大下坡道上空气制动工况优化问题,采用工况初选策略自动计算到换坡点,然后进行进出坡检验。若列车的出坡速度不合理则采用不同的策略回退到回退基点,舍掉回退基点后的结果,将其前的结果作为计算的当前解,以此产生一个更优的新解,不断重复该过程直到出坡速度合理时停止迭代。最后得到的工况组合是优化的。
When the train is running up and down the ramp, the air brake is usually used to adjust the speed of the periodic brake. In order to meet the requirement of charging time between two air brakes and the empty time of trains, it often results in unreasonable speed difference between the train’s exit speed and the speed limit on the next slope. In view of the optimization of the air braking condition on the downhill, the first-choice strategy of working condition is used to automatically calculate the slope change point and then carry on the slope check. If the train’s exit speed is unreasonable, it adopts different strategies to roll back to the base point of withdrawal and discards the result after the base point is rolled back, taking the previous result as the current solution of the calculation, so as to produce a better new solution, The process is repeated until the ramp-out rate is reasonable. The resulting combination of conditions is optimized.