Train wheel diameter calibration method and device
A calibration method and train technology, which is applied in the direction of rim measurement/measurement, can solve the problems affecting the positioning accuracy, the inability to calibrate the train wheel diameter in real time, and the impact of train driving safety, etc., to achieve the effect of ensuring safety
Active Publication Date: 2020-03-06
通号城市轨道交通技术有限公司
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Problems solved by technology
[0004] It can be seen that the existing wheel diameter calibration technology cannot achieve real-time calibration of the train wheel diameter, which affects the positioning accuracy and also affects the driving safety of the train
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[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0048] figure 1 It is the flow chart of the train wheel diameter verification method in the embodiment of the present invention, as figure 1 As shown, the method includes:
[0049] Step S01, when the train enters the deceleration process of entering the station, according to the preset kinematics model, use the distance and speed of the train du...
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The embodiment of the invention provides a train wheel diameter calibration method and device. The method comprises the steps that when a train enters an inbound deceleration process, a state prediction equation is constructed by adopting a running distance and a speed as a state vector according to a preset kinematic model, and an observation vector is obtained according to the train wheel diameter and the number of pulse signals accumulated by a wheel axle sensor, and an observation state equation is constructed; according to the state prediction equation and the observation state equation,the state estimation value of the state vector is predicted based on the Kalman filtering recursive algorithm; and according to the state estimation value and the observation state equation, a wheel diameter correction value is obtained. According to the train wheel diameter calibration method and device, the state vector is obtained through the kinematic model, the state prediction equation is constructed, meanwhile, the observation vector is obtained according to the wheel axle sensor, and the observation state equation is constructed; and then the state estimation value of each prediction moment is obtained based on the Kalman filtering recursive algorithm, so that the wheel diameter correction value of the train wheel diameter can be obtained, the train wheel diameter can be calibratedaccurately, and the driving safety is guaranteed.
Description
technical field [0001] The invention relates to the technical field of rail trains, in particular to a method and device for verifying train wheel diameters. Background technique [0002] The accuracy and reliability of the train speed and position information provided by the speed measuring and positioning subsystem is the prerequisite for the rail transit signal system to ensure the safe and efficient operation of the train. Speed sensor and Doppler radar are speed measuring and ranging devices widely used in the field of rail transit at present. The complementarity of the two is used to provide the speed measuring and positioning accuracy of the whole system. The speed sensor is usually installed on the brake shaft of the train, and its speed measurement and positioning accuracy is directly affected by the wheel diameter value. Since the friction between the wheel and the rail will change the wheel diameter after the train has been running for a period of time, the on-...
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IPC IPC(8): B61K9/12
CPCB61K9/12
Inventor 周东蕴童伟马新成高泰王海南方弟彭朝阳
Owner 通号城市轨道交通技术有限公司