Transverse track irregularity detecting method based on observer

An observer and robust observer technology, which is applied in orbits, measuring instruments, orbit maintenance, etc., can solve the problems of system complexity, low efficiency, and inability to meet the requirements of real-time detection of orbital safety status.

Active Publication Date: 2012-11-28
BEIJING JIAOTONG UNIV
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Problems solved by technology

Manual detection is to detect the geometric shape of the track through strings, track inspection instruments, etc., so it has the disadvantages of high work intensity and low efficiency; most track inspection vehicles use some optical components, displacement sensors, servo systems, etc. to form track geometry The shape and position detection system has a relatively high degree of automation, but due to the complexity of the system, it is susceptible to interference from the external environment and is prone to failure,

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  • Transverse track irregularity detecting method based on observer
  • Transverse track irregularity detecting method based on observer
  • Transverse track irregularity detecting method based on observer

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Embodiment Construction

[0053] The present invention proposes an observer-based detection method for track lateral irregularity, which will be further described below in conjunction with the accompanying drawings and embodiments.

[0054] The steps of the observer-based track lateral irregularity detection method are as follows:

[0055] 1. The layout of the sensing device

[0056] like figure 1 As shown, the lateral acceleration sensor Уb and the shaking head angle measuring instrument Ψb (gyroscope is enough) are installed at the center of the bogie, which are used to measure the lateral acceleration and shaking head angular velocity of the bogie during the running of the train respectively; The lateral acceleration sensor Уbd obtains the lateral acceleration of the vehicle body.

[0057] 2. Preprocessing of signal acquisition

[0058] The signal acquisition unit entity is the signal conditioning board, which mainly performs isolation processing, analog-to-digital conversion and digital filtering ...

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Abstract

The invention discloses a transverse track irregularity detecting method based on an observer, which belongs to the technical field of track dynamic detection. The method comprises the following steps of: first, mounting a transverse acceleration sensor, a yaw angle measuring instrument or a gyroscope at the center of a bogie, so as to respectively measure transverse acceleration and yaw angular speed of the bogie in the train operation process; meanwhile, mounting a transverse acceleration sensor at the center of a train body bottom plate so as to obtain a train body transverse acceleration; and then carrying out relevant pre-processing, such as isolation, analogue-to-digital conversion, digital filtering and the like, on an analogue signal collected by a sensing device; and carrying out dynamics modeling on a train transverse suspension system by using the data to construct a transverse track irregularity estimating system, so as to detect the transverse track irregularity. The transverse track irregularity detecting method based on the observer, disclosed by the invention, belongs to an in-transit detecting method and has the advantages of stronger detection timeliness, simple structure of a detecting unit, uneasiness for being interfered by outside factors, high device reliability and low cost.

Description

technical field [0001] The invention belongs to the technical field of track dynamic detection, and in particular relates to an observer-based method for detecting transverse irregularity of a track. Background technique [0002] Track irregularity is an external disturbance to the rolling stock system and the main source of vibration in the rolling stock system. It not only affects the smooth operation of the train, but also when the deformation accumulates to a certain limit, it will greatly weaken the strength and structural stability of the line, and have a serious impact on the safety of railway transportation. Therefore, timely detection of track smoothness is of great significance for ensuring driving safety and rationally arranging maintenance and repair of lines. At present, the inspection of rail transit lines at home and abroad is mainly completed by manual inspection and rail inspection vehicles. Manual detection is to detect the geometric shape of the track th...

Claims

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Application Information

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IPC IPC(8): E01B35/02
Inventor 魏秀琨汪煜婷贾利民郭淑萍柳海林帅郭昆
Owner BEIJING JIAOTONG UNIV
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