Leveling control system and method for aerial work platform

Abstract

The invention relates to the field of aerial work platform electric control systems, in particular to a leveling control system and method for an aerial work platform. The leveling control system comprises an information input unit used for collecting the state information of the aerial work platform, a control unit used for outputting a corresponding mechanical control signal according to the state information, and an execution unit used for driving a corresponding mechanical element to execute a control action according to the mechanical control signal, and a controller monitors the state of a whole vehicle in real time; in an amplitude variation process, the angle change condition of a large arm serves as a feedforward signal, control processing is conducted on the platform in advance, and then leveling is conducted again according to whether a current platform angle value meets a leveling requirement or not. Through the leveling control method, the leveling speed, stability and precision of the platform can be improved under the condition that no hardware cost is increased.

Description

technical field [0001] The invention relates to the field of electric control systems for aerial work platforms, in particular to a leveling control system and method for aerial work platforms. Background technique [0002] Aerial work platform is a kind of construction machinery that delivers construction personnel to a designated height and location for construction work. Aerial work platforms can be divided into scissor type, articulating arm type, straight arm type and other types. This The invention patent mainly takes the straight-arm aerial work platform as the research object. The general actions that the straight-arm aerial work platform can perform are as follows: figure 1 As shown, it can be divided into ① vehicle forward and backward, ② vehicle turning left and right, ③ chassis rotation, ④ main arm luffing, ⑤ main arm telescopic, ⑥ curved arm luffing, ⑦ platform rotation, ⑧ platform leveling eight actions . [0003] Platform leveling technology has always been ...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems of poor responsiveness and platform vibration of the above-mentioned automatic leveling electronic control system, the present invention proposes a control method and system for leveling technology of aerial work platforms, using the controller as the core control unit of the system, the controller and the long-angle sensor , inclination sensor, up leveling switch, down leveling switch, up luffing switch, down luffing switch, leveling cylinder solenoid valve and luffing cylinder solenoid valve, etc., the controller monitors the status of the whole vehicle in real time, during the luffing process In this method, the angle change of the boom is used as a feed-forward signal, and the platform is controlled in advance, and then re-leveled according to whether the current platform angle value meets the leveling requirements. This method improves the platform adjustment during the luffing process. Flat responsiveness, stability, etc. (see control flow chart for details)

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