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Detection and calibration control method of travel distance and location of running mechanism

A technology of operating mechanism and calibration control, applied in the direction of measuring devices, electrical devices, instruments, etc., can solve the problems of increasing measurement errors, not being able to effectively guarantee the detection accuracy and reliability, and the wheels are prone to slipping and wear, etc., to improve The effect of precision

Pending Publication Date: 2019-06-14
SINOHYDRO JIAJIANG HYDRAULIC MACHINERY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the error in the detection of the position encoder itself, and the problem that the wheel is prone to slipping and wear during the rotation process, the measurement error is further increased, and the detection accuracy and reliability cannot be effectively guaranteed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for detecting, calibrating and controlling the stroke and position of an operating mechanism, comprising the following steps:

[0027] a. Install a plurality of magnetic steels on the ground below the track at predetermined positions along the length direction of the track. The magnetic steels are close to the rail waist side of the track to obtain the predetermined position of the magnetic steels. Install the displacement encoder on the wheel of the running mechanism to determine The positioning area of ​​the displacement encoder of the operating mechanism;

[0028] b. Install the magnetostatic grid sensor to the lower end of the frame of the operating mechanism, determine the positioning point of the magnetostatic grid by predetermined physical positioning mark points, and determine the calibration point of the magnetostatic grid by predetermined physical calibration mark points;

[0029] c. Calibrate the zero position of the operating mechanism corresponding...

Embodiment 2

[0032] A method for detecting, calibrating and controlling the stroke and position of an operating mechanism, comprising the following steps:

[0033] a. Install a plurality of magnetic steels on the ground below the track at predetermined positions along the length direction of the track. The magnetic steels are close to the rail waist side of the track to obtain the predetermined position of the magnetic steels. Install the displacement encoder on the wheel of the running mechanism to determine The positioning area of ​​the displacement encoder of the operating mechanism;

[0034] b. Install the magnetostatic grid sensor to the lower end of the frame of the operating mechanism, determine the positioning point of the magnetostatic grid by predetermined physical positioning mark points, and determine the calibration point of the magnetostatic grid by predetermined physical calibration mark points;

[0035] c. Calibrate the zero position of the operating mechanism corresponding...

Embodiment 3

[0038] A method for detecting, calibrating and controlling the stroke and position of an operating mechanism, comprising the following steps:

[0039] a. Install a plurality of magnetic steels on the ground below the track at predetermined positions along the length direction of the track. The magnetic steels are close to the rail waist side of the track to obtain the predetermined position of the magnetic steels. Install the displacement encoder on the wheel of the running mechanism to determine The positioning area of ​​the displacement encoder of the operating mechanism;

[0040] b. Install the magnetostatic grid sensor to the lower end of the frame of the operating mechanism, determine the positioning point of the magnetostatic grid by predetermined physical positioning mark points, and determine the calibration point of the magnetostatic grid by predetermined physical calibration mark points;

[0041] c. Calibrate the zero position of the operating mechanism corresponding...

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Abstract

The invention discloses a detection and calibration control method of travel distance and a location of a running mechanism, and belongs to the technical field of the electrical control. The method comprises the following steps: a, determining a positioning region of a running mechanism displacement encoder; b, determining a static magnetic grid positioning point and a static magnetic grid calibration point; c, demarcating a zero point location of the running mechanism corresponding to the displacement encoder, thereby obtaining a relation formula of a running mechanism location and a displacement encoder code value signal; performing primary calibration on the location of the displacement encoder detection when the static magnetic grid sensor passes through magnetic steel at a lower sidethereof; performing secondary calibration on the location of the displacement encoder detection when the static magnetic grid sensor passes through the next magnetic steel, thereby accomplishing the detection and calibration control of the travel distance and location of the running mechanism. The real-time dynamic calibration and precise control are performed on the running mechanism by adoptingthe double data of the displacement encoder combined with the static magnetic grid sensor, the detection precision and reliability are obviously improved, and the control method has the features of being convenient for operation and good in adaptability.

Description

technical field [0001] The invention relates to the technical field of electrical control, in particular to a method for detecting, calibrating and controlling the stroke and position of an operating mechanism. Background technique [0002] The stroke and position detection of cranes or other transport machinery operating mechanisms often use the "wheel / roller + encoder" method, but this detection cannot solve the errors caused by slipping and wear, so it is mostly used for low precision and reliability requirements Stroke detection or stroke deviation detection; in addition, there are different forms of full-stroke installation sensors for stroke or stroke deviation detection, the detection accuracy is significantly improved, but the cost and system complexity are also increased, and some detection methods still exist The disadvantage of poor environmental adaptability. [0003] The publication number is CN 203889920U, and the Chinese patent literature published on October...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00G01B7/02
Inventor 曾文蒋从军张建
Owner SINOHYDRO JIAJIANG HYDRAULIC MACHINERY
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