Title:
CALIBRATION METHOD AND SYSTEM FOR INCIDENT ANGLE OF PORTABLE HIGH-PRESSURE WATER JET FOR STEEL RAIL GRINDING
Document Type and Number:
WIPO Patent Application WO/2023/124577
Kind Code:
A1
Abstract:
A calibration method and system for an incident angle of a portable high-pressure water jet for steel rail grinding. In the calibration method, firstly, original data of an acceleration and an angular velocity is collected by using an accelerometer and a gyroscope; three-axis acceleration data and three-axis angular velocity data are solved by combining the sensitivities of two sensors, i.e. the accelerometer and the gyroscope; then, an inertial force vector of the accelerometer is calculated by means of a definition, and a first group of included angle data between the vector and each axis is obtained; the three-axis angular velocity data which is obtained by the gyroscope and is less affected by an external vibration is taken as a second group of included angle data; and a first-order complementary algorithm is applied to the two groups of data, so as to obtain an accurate value, thereby determining a final incident angle. By means of the calibration method, the disadvantages of an accelerometer and a gyroscope are complementary, and the problem of mechanical vibration and noise bringing about an error during the calibration of an incident angle of a water jet for steel rail grinding is solved. The calibration system for an incident angle of a portable high-pressure water jet for steel rail grinding comprises a sensor unit (11) for collecting original data of an acceleration and an angular velocity, a control unit (12) for performing calculation to obtain a first group of incident angles, a second group of incident angles and a final incident angle, and a display screen (2), wherein the control unit (12) is in signal communication with the sensor unit (11) and the display screen (2), respectively.
Inventors:
LI DENG (CN)
CHEN TIANYI (CN)
WU SHIJING (CN)
ZHOU ZHIYU (CN)
ZHANG KUN (CN)
WU ZIQUAN (CN)
CHEN TIANYI (CN)
WU SHIJING (CN)
ZHOU ZHIYU (CN)
ZHANG KUN (CN)
WU ZIQUAN (CN)
Application Number:
PCT/CN2022/131419
Publication Date:
July 06, 2023
Filing Date:
November 11, 2022
Export Citation:
Assignee:
UNIV WUHAN (CN)
CN RAILWAY SIYUAN SURVEY & DES (CN)
SHENYANG ALL–POWERFU L SCIENCE AND TECH STOCK CO LTD (CN)
CN RAILWAY SIYUAN SURVEY & DES (CN)
SHENYANG ALL–POWERFU L SCIENCE AND TECH STOCK CO LTD (CN)
International Classes:
E01B31/12
Domestic Patent References:
| WO2018215362A1 | 2018-11-29 |
Foreign References:
| CN107543546A | 2018-01-05 | |||
| CN110672017A | 2020-01-10 | |||
| CN212553400U | 2021-02-19 | |||
| CN109540135A | 2019-03-29 | |||
| CN109789526A | 2019-05-21 | |||
| EP1367175A2 | 2003-12-03 | |||
| GB1313192A | 1973-04-11 | |||
| US6408675B1 | 2002-06-25 | |||
| CN114395953A | 2022-04-26 |
Attorney, Agent or Firm:
WUHAN ZHIBOLE INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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