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CPIII (control points of III level) control net adjustment method

A technology of control network and adjustment, applied in the direction of adaptive control, general control system, control/adjustment system, etc., can solve the problems of scale inconsistency of control network, distortion of CPIII control network, etc.

Active Publication Date: 2017-01-25
CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The essence of the constrained adjustment method is to forcibly pull the CPIII control network into the line design coordinate system, which will not only cause distortion of the CPIII control network, but also cause the scale of the control network to be inconsistent with the actual scale of the site

Method used

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  • CPIII (control points of III level) control net adjustment method
  • CPIII (control points of III level) control net adjustment method
  • CPIII (control points of III level) control net adjustment method

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Embodiment Construction

[0045] The present invention will be described in detail below in combination with specific embodiments.

[0046] The CPIII control network adjustment method involved in the present invention is realized by the following steps:

[0047] Step 1: List the error equation

[0048] The observation data of CPIII control network (planar network) participating in the adjustment can be divided into two types: direction observation value and horizontal distance observation value. The error equation for direction observations is:

[0049] v k i = - dz k + a k i x ^ k + b k i y ^ k + a i k x ^ ...

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Abstract

The invention relates to a CPIII (control point of III level) control net adjustment method; a CPIII control net acquired by using constraint adjustment method is adverse to the evaluation and regulation of internal geometric dimensions of a rail; the method focuses only on meeting the requirement for external geometric dimensions of a rail; a correction numerical matrix for direction observation and horizontal distance observation are acquired by using an error equation of direction observation and horizontal distance observation, an additional condition matrix is acquired through the correction numerical matrix of the error equation, an additional condition equation and adjustment rules, namely an adjustment model is established, and adjustment calculation is finished by solving the model; the method of the invention gives the priority to meet the requirement for internal geometric dimensions of a rail, can meet the requirement for external geometric dimensions of the rail, and is free of influence form original data errors, the CPIII control net is never distorted, the CPIII control net is introduced to a line design coordinate system through position reference and direction reference, and the CPIII control net can meet the requirement for 'triply play' on high-speed railway.

Description

technical field [0001] The invention relates to the technical field of high-speed railway track control network (planar network) data processing, in particular to a CPIII control network adjustment method. Background technique [0002] In order to ensure the safety and comfort of the train under high-speed driving conditions, the high-speed railway track must have very high smoothness and precise geometric linear parameters, including the internal geometric dimensions of the track (the geometric dimensions of the track itself) and the external geometric dimensions (the track The relative size of the surrounding buildings), such as gauge, rail direction, height, level, distortion, deviation from the design elevation and center line, etc. Among them, the internal geometric dimension is used to describe the geometric shape of the track, which mainly affects the smoothness of the track; the external geometric dimension is used to describe the position and elevation of the track ...

Claims

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 任晓春马洪磊罗文彬
Owner CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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