Boom amplitude variation control system, boom amplitude variation control method and high-altitude operation vehicle

Abstract

The invention provides a boom amplitude variation control system, a boom amplitude variation control method and a high-altitude operation vehicle. The boom amplitude variation control system comprises a hydraulic source, an amplitude variation oil cylinder, a control valve group and a controller, wherein the control valve group comprises a first control valve group arranged between a hydraulic source and a first working cavity of the amplitude variation oil cylinder, and a second control valve group arranged between the hydraulic source and a second working cavity of the amplitude variation oil cylinder; the first control valve group and the second control valve group are respectively connected with the first working cavity and the second working cavity through a first working port and a second working port; the first control valve group is configured to control the pressure and / or flow of the first working port; the second control valve group is configured to control the pressure and / or flow of the second working port; and the controller is configured to respectively send amplitude variation control instructions to the first control valve group and the second control valve group according to the amplitude variation action information of a boom and the pressure and / or flow in the boom amplitude variation control system. According to the boom amplitude variation control system, the boom amplitude variation control method and the high-altitude operation vehicle provided by the invention, the sinking, rebounding and vibration phenomena of the boom in the amplitude variation action can be improved.

Description

technical field [0001] The present disclosure relates to the technical field of hydraulic control, and in particular to a boom variable amplitude control system, a variable amplitude control method and an aerial work vehicle. Background technique [0002] The operation process of the aerial work vehicle often involves the jib luffing. During the luffing movement of the jib, due to factors such as the deflection of the jib itself, gravity, inertia, and unstable pressure of the hydraulic system, the jib may vibrate. When the jib luffing action starts or stops, due to the opening or closing action of the related control valve, the boom may sink or rebound. [0003] In order to control the amplitude of the boom, in the related art, the controller adjusts the analog signal used for the amplitude control according to the angle and length of the boom as the control signal for controlling the opening of the valve, so as to adapt to the speed of the amplitude movement under differen...

AI Technical Summary

Problems solved by technology

Due to the limitation of the control accuracy of the analog signal, although the above control method can complete the basic movement of the jib luffing, it is necessary to alleviate the vibration phenomenon of the jib during the luffing action and the vibration of the jib when the luffing action starts or stops. Sink or bounce phenomenon has limited effect

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