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Systems and methods for calibrating acceleration sensor using payload system

An acceleration sensor and acceleration measurement technology, which is applied in the directions of using inertial force for acceleration measurement, measuring acceleration, testing/calibration of speed/acceleration/shock measurement equipment, etc., can solve problems such as accelerometer offset without description

Pending Publication Date: 2020-03-17
CATERPILLAR INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the Actronic publication does not describe taking into account any offset in accelerometer mounting

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  • Systems and methods for calibrating acceleration sensor using payload system
  • Systems and methods for calibrating acceleration sensor using payload system
  • Systems and methods for calibrating acceleration sensor using payload system

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Embodiment Construction

[0011] Both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of what is claimed. As used herein, the terms "comprises," "comprising," "has," "including," or variations thereof, are intended to cover a non-exclusive inclusion such that a sequence of elements is included, A method, article, or apparatus includes not only those elements, but may include other elements not explicitly listed or inherent to such a process, method, article, or apparatus.

[0012] In the present invention, relative terms such as "about", "substantially" and "approximately" are used to denote possible variations of ±10% in the stated values. Although the invention has been described with reference to a wheel loader, this is exemplary only. In general, the invention is applicable to any type of heavy equipment / machinery, such as any type of truck, loader, dumper, transport dozer, etc. Although the present invention make...

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Abstract

The invention relates to systems and methods for calibrating a acceleration sensor using a payload system. A method for calibrating an acceleration sensor coupled to a machine may comprise: at a firstposition of a linkage of the machine, obtaining a first acceleration measurement from the acceleration sensor and obtaining from an input a first force value indicative of a first force on the linkage; at a second position of the linkage of the machine, obtaining a second acceleration measurement from the acceleration sensor and obtaining from the input a second force value indicative of a secondforce on the linkage; determining a rotational offset calibration value of the acceleration sensor as a function of the first acceleration measurement, the first force value, the second accelerationmeasurement, and the second force value; and using the rotational offset calibration value to calibrate the acceleration sensor.

Description

technical field [0001] The present invention relates generally to mobile machines, and more particularly to systems and methods for calibrating sensors of such machines. Background technique [0002] Industrial machinery, such as heavy equipment. Heavy equipment may have various sensors coupled thereto to measure various parameters related to the operation of the heavy equipment. For example, heavy equipment may utilize an inertial measurement unit ("IMU"), which may include sensors such as accelerometers, gyroscopes, and magnetometers. An IMU coupled to a machine can measure properties such as the machine's acceleration and angular velocity. During machine manufacture, an IMU or other sensor may be coupled to the machine using, for example, bolts or other mechanisms. Although IMUs and equipment may include pre-drilled holes to accommodate bolts or other mechanisms designed to produce a consistent installation of the IMU on the machine, IMUs installed within manufacturing...

Claims

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Application Information

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IPC IPC(8): G01P21/00G01P15/02E02F9/26
CPCG01P21/00G01P15/02E02F9/264G01P15/0802
Inventor S·D·柯里尔
Owner CATERPILLAR INC