System and method for positioning linear rail car based on laser ranging

A technology of linear track and laser ranging, applied in the direction of using feedback control, etc., can solve the problem of no complete solution, achieve the effect of improving cost performance, improving reliability and intelligence, and simple and reliable structure

Inactive Publication Date: 2013-04-03
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

How to achieve a control accuracy of ±3mm positioning accuracy, there is no complete solution in the above patents, but the solution proposed in this patent can solve the above problems

Method used

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  • System and method for positioning linear rail car based on laser ranging
  • System and method for positioning linear rail car based on laser ranging
  • System and method for positioning linear rail car based on laser ranging

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Experimental program
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Embodiment

[0066] Location data update method:

[0067] The digital quantity received by the PLC controller is filtered by the sliding average method. The sliding average method uses the data queue as the original data for calculating the average value of the data. The length of the data queue is fixed at 10. Every time a new sampling is performed, the The latest sampling result is placed at the end of the queue, and the sampling result at the head of the original queue is discarded, so that the latest sampling result is always kept in the data queue, and the sampling result is calculated as the displacement value at this moment.

[0068] Jog adjustment method:

[0069] Jogging is when the actual position and the target position have an error distance greater than the minimum jogging displacement after the rail car slides to a stop. When the actual parking position of the car does not reach the target value, the car can "jog" forward to the target value; otherwise, when the actual parki...

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PUM

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Abstract

The invention relates to a system and a method for positioning a linear rail car based on laser ranging. The system comprises a laser range finder, a controller programmable logic controller (PLC) and an alternating current contactor for controlling a motor, wherein the controller controls the rail car to start and stop by controlling the alternating current contactor; the laser range finder is arranged on the rail car; the emitted laser is parallel to an advancing rail; a laser reflection plate is supported by an upright post and fixed at one end of the rail; and the controller can accurately judge the current position of the rail car by receiving a digital position signal of the laser range finder, and can control starting and stopping of the motor according to the demanded position when the laser emitted by the laser range finder irradiates the reflection plate and is reflected to the laser range finder. By adopting the positioning method disclosed by the invention, the rail car can accurately achieve the target position, so as to achieve full-automatic positioning of the rail car.

Description

technical field [0001] The invention relates to a linear rail car positioning system and method based on laser ranging, in particular to a rail car laser positioning system and a method for controlling a non-adjustable speed motor to achieve high-precision positioning. Background technique [0002] Rail cars, including coke oven cars, trains, subways, etc., are all heavy machinery and equipment. They are generally large in size and have a large inertia when walking. According to the requirements of the production process, rail cars need to be in a "operation-alignment parking-operation" reciprocating walking state. How to accurately obtain the current position of the locomotive in real time and enable the locomotive to automatically stop and locate at the designated position is the key to realize automatic control. With the continuous development of laser technology, its error is small and its resolution is high, so it is more and more used in various measurement fields. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D3/12
Inventor 车新生刘磊磊赵庚何静许会
Owner SHENYANG POLYTECHNIC UNIV
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