Research On The Evaluation Method Of The Railway Vehicle Longitudinal Comfort For ATO

As the essential part of the Automatic Train Operation System, ATO system can replace most of the driver’s operational work. It can keep the train in the best operating status by realizing the standardization of train running operations, accurately executing the train running programmed, improving the driving efficiency and realizing the best control of train running and energy-efficient operation. It plays an important role in enhancing passager comfort, improving train punctuality and saving energy.With the development of people’s living standard, higher coach comfort is demanded. And for ATO system, the related coach comfort lies on the longitudinal impulse of the train. This makes it significant to reseach on the train longitudinal impulse. It provides rationale and support methods for the optimization of ATO system’s driving curve and improves the passagers’comfort.Because as a subway train, the operation of its main purpose is accurate, energy saving, safety, comfort. So it can’t provide some abnormal condition, and do not have the integrity test scene condition. Therefore it is not advisable to research longitudinal impulse in the subway train.This paper, analyzes the characteristics of metro vehicle’s longitudinal impulse of the ATO, puts forward a method of using dynamic simulation experiment platform for researching longitudinal impulse; designs a dynamic simulation experiment platform and proved the fidelity of experimental platform; puts forward a method of the hand grip changes value to evaluate longitudinal comfort, and by using this method, set a longitudinal comfort evaluation standard.Firstly, the cause of longitudinal impulse for metro vehicle under ATO status is analyzed and the performance of the simulator is demanded, a researching plan for longitudinal impulse of metro vehicle facing ATO system is designed.Secondly, the institutions pose of simulator motion control system is analyzed, and obtained the needed rotation angle with the inverse position kinematics. After that, using the Z Axis motor function this paper designed propnoceptive simulation algorithms for metro vehicle facing ATO system based on Z Axis compensation. And the filter of the algorithm is designed as well.Then experiment of Condition difference and experiment of2stations within1 interval are designed, with these two experiments the simulating fidelity level of the experimental platform is evaluated subjectively and the simulator fidelity level is obtained.After that it brought up the method which evaluates train longitudinal impulse comfort with hand pressure to analyze the test men’s hand pressure change value and their sense of comfort. It confirmed that they have a strong relevance.At the end of this paper, the effects caused by the magnitude and duration of the acceleration in constant driving-coasting-driving process on human’s longitudinal impulse comfort under Inert operation status is analyzed so as to build up a set of longitudinal impulse evaluation standard. The after testing of longitudinal impulse comfort will be much more convenient with the hand pressure change value combined with this evaluation standard. Finally, verify the longitudinal comfort evaluation standard from a real train test.