沥青水泥砂浆车液压三点调平系统研究
Research of hydraulic leveling system of three points for asphalt cement mortar vehicle
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摘要: 为了提高车载沥青水泥砂浆车搅拌平台的调平精度、减少调平时间,研制开发了基于PLC的液压三点自动调平系统.该系统基于搅拌平台倾斜角度与支腿伸长量之间的定量关系,将调平问题转化为各支撑点与最高支撑点之间的几何高度差的预测控制,从而实现三腿齐动的控制.实验结果表明,该系统调平精度达到±0.3°,调平时间小于6 s,实现了砂浆车的快速自动调平.Abstract: In order to improve the leveling precision and reduce the leveling time of the vehicle asphalt cement mortar mixing platform, the automatic leveling system was developed based on PLC. The leveling problem of the system turns into predictive controlling to the geometric height difference between the each point and the highest point based on the mathematical relationship between the slant angles and the leg elongations to realize the control of three legs moving together. The results showed that the leveling accuracy of the system reaches ±0.3° and the leveling time is less than 6 s, realized the mortar vehicle mixing platform fast automatic leveling.
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Key words:
- asphalt cement mortar vehicle /
- hydraulic leveling of three points /
- PLC
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