Method for controlling automatic leveling system of special vehicle

Abstract

The invention relates to a method for controlling an automatic leveling system of a special vehicle. By adjusting the lifting of an electric jack, the automatic leveling of the vehicle under specific conditions is realized. When an automatic leveling command is sent to a controller, a control system enters an automatic leveling program; a microprocessor sends a signal to a drive circuit to drive a motor to make four brackets landed; and related data of the current inclination condition of the vehicle detected by a double-shaft inclination angle sensor and an angle value of a pre-calibrated balance state are compared, if horizontal error exceeds the allowed range, according to the stroke magnitude of the four electric jacks, the microprocessor generates a control signal according to a definite leveling method to make the jacks move up and down so as to drive the inclination angle of the vehicle to change in opposite directions and finally achieve the aim that the leveling of the vehicle meets the precision requirement. The control method is simple and convenient and easy to realize, has the advantages of high leveling precision, stable work, reliable performance and low hardware resource requirement, and greatly lowers the product cost.

Description

technical field [0001] The invention relates to a control method, in particular to a control method for an automatic leveling system of a special vehicle. Background technique [0002] Special vehicles mainly refer to special vehicles suitable for military, news, petroleum, health, tourism, fire rescue, earthquake command and other industries. Since 2000, my country's economy has developed rapidly, people's requirements for quality of life and social security have increased rapidly, and the research and development of special vehicle-related technologies has increasingly attracted the attention of scientific and technological workers. As an important control technology for special vehicles, automatic leveling has attracted extensive attention from automotive electronics research and development institutions. Most of the existing vehicle automatic leveling systems use multi-sensors to collect various state information of the vehicle, and use high-performance microprocessors ...

AI Technical Summary

Problems solved by technology

After research, it is found that the high cost is mainly reflected in the following aspects. First, in order to accurately collect the support force of each jack, pressure sensing components are installed at the appropriate positions of each jack; second, four linear displacement sensors are used to realize each jack. Accurate collection of the stroke size of the jack; the third is to use the Hall current sensor to collect the size of the drive current of each motor; the fourth is to process a lot of information and the control method is complicated, so only high-end high-performance microprocessors can be used for control

This complex control method based on multi-sensor and multi-information processing automatic leveling system is difficult to solve the contradiction between high leveling accuracy and low production cost

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