Method for measuring three-dimensional mass center of super-long large vehicle

Abstract

The invention provides a method for measuring a three-dimensional mass center of a super-long large vehicle. The method comprises the following steps: measuring a planar two-dimensional mass center of the vehicle in a horizontal state; a straight long slope ramp is selected, and the angle of the slope ramp relative to the horizontal plane is determined; and measuring the center of mass of the vehicle in the vertical direction when the vehicle is in a static state on the ramp. According to the method, a simple technical scheme for measuring the three-dimensional mass center of various general vehicles is provided, limitation of plants is avoided, the method is high in discrimination and applicability and simple and convenient in calculation concept, and a technical approach is particularly provided for high-precision, low-cost and high-efficiency measurement of super-long and large vehicles.

Description

technical field [0001] The invention belongs to the technical field of mechanical measurement, and in particular the invention relates to a simple and convenient method for measuring the three-dimensional center of mass of an ultra-long and large vehicle on the spot at any time. Background technique [0002] In the field of mechanical mass center of mass measurement technology, the measurement of the three-dimensional center of mass of super long and large vehicles usually adopts the "suspension method" and "turning platform method", and there are some other measurement methods, but the basic principle is generally similar to the "turning platform method". Existing technologies such as Figure 1a -c shown. Among them, the "suspension method" needs to lift one end of the super long and large vehicle (such as Figure 1a shown), however, the problem is that the chassis of a super-long and large vehicle is long, and the equipment on the vehicle is special and heavy under load. ...

AI Technical Summary

Problems solved by technology

Even if a super-large-scale three-dimensional centroid test platform is built at a high cost, each hard flat panel sensor can only be disassembled for individual calibration when the value is traced, but the disassembly process is complicated, and reinstallation, debugging and compensation must be performed after calibration measure

At the same time, the sensors are individually calibrated and then combined into a test platform. Strictly speaking, the traceability of the value is not direct and rigorous, and it is difficult to verify the accuracy. Therefore, its test accuracy needs to be studied

[0006] (2) The application of three-dimensional center-of-mass measurement devices using soft pressure film sensor "flipping platform method" is particularly rare. Therefore, most of the soft pressure membranes in the domestic market are imported, the price is quite expensive, and the highest accuracy can only reach 10%, which is relatively poor in terms of quality measurement

At the same time, the soft pressure film sensor is not recommended to bear heavy objects for a long time, otherwise the measurement accuracy will be affected and the sensor may be damaged

Secondly, the soft pressure film sensor uses image recognition, pressure distribution and other methods to measure the three-dimensional centroid. The mathematical model algorithm is complex, and the introduction of many parameters will inevitably lead to a large cumulative error effect.

Furthermore, there is no ready-made standard for the calibration of soft pressure film sensors, and there is no corresponding calibration device in China. There are problems in the traceability of the value, and the measurement accuracy needs to be verified in practice.

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