The invention relates to the field of mechanical control, and discloses a leveling system, a leveling method and engineering machinery. The leveling system comprises a front control quantity obtaining device used for obtaining the front control quantity used for controlling a leveling valve of a platform according to the movement speed of a boom and the movement speed of the platform; the leveling control quantity obtaining device is used for obtaining the control quantity of the leveling valve according to a working condition self-adaptive control algorithm and the front control quantity of the leveling valve, and the control quantity of the leveling valve comprises the feed-forward control quantity and the feedback control quantity of the leveling valve; and the control device is used for controlling the leveling valve according to the control amount of the leveling valve. On the basis of feed-forward control, the leveling action can be finely adjusted to adapt to the working condition change, so that the leveling deviation caused by the temperature of a hydraulic system, the deflection of a cantilever crane, the load change and external interference is eliminated.

    本发明涉及机械控制领域,公开了涉及一种调平系统、调平方法及工程机械。所述调平系统包括:前置控制量获取装置,用于根据臂架的运动速度与平台的运动速度,获取用于控制所述平台的调平阀的前置控制量;调平控制量获取装置,用于根据工况自适应控制算法及所述调平阀的前置控制量,获取所述调平阀的控制量,其中,所述调平阀的控制量包括所述调平阀的前馈控制量与反馈控制量;以及控制装置,用于根据所述调平阀的控制量,控制所述调平阀。本发明可在前馈控制的基础上,对调平动作进行微调以自适应工况变化,从而消除因液压系统温度、臂架挠度、负载变化和外部干扰引起的调平偏差。


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    Title :

    Leveling system, leveling method and engineering machinery


    Additional title:

    调平系统、调平方法及工程机械


    Contributors:
    ZHU HOU (author) / XIONG LU (author) / YUE ZEQING (author) / YANG YU (author)

    Publication date :

    2022-05-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last



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