Control method and control system for slewing mechanism and engineering equipment

Abstract

The invention relates to the field of engineering machinery, and discloses a control method, a control system and engineering equipment for a slewing mechanism, the control method for the slewing mechanism is applied to the engineering equipment, the engineering equipment comprises the slewing mechanism and a hydraulic system for driving the slewing mechanism, and the hydraulic system comprises a pump. The control method comprises the steps that under the condition that a swing mechanism is in a starting state, the characteristic pressure of a hydraulic system under the current load condition is obtained, and the characteristic pressure is the pressure corresponding to a turning point of pressure change in a pressure change period; determining target pressure of the hydraulic system according to the characteristic pressure; the actual pressure of the hydraulic system is obtained; the difference value between the target pressure and the actual pressure is determined; and controlling the flow of the pump according to the difference value to adjust the actual pressure to the target pressure. The working condition adaptability can be improved.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a control method, a control system and engineering equipment for a slewing mechanism. Background technique [0002] The slewing mechanism of engineering equipment has the characteristics of large starting inertia. When the slewing mechanism starts, the hydraulic torque required by the slewing motor is relatively large, so the hydraulic pressure often reaches the overflow pressure of the circuit, resulting in the waste of hydraulic energy and the rise of oil temperature in the hydraulic system. and overflow noise. Therefore, in the hydraulic system, in order to reduce energy loss, it is often hoped that the system pressure can be controlled below the overflow pressure of the overflow valve, so that the system does not overflow or has less overflow, so as to achieve the purpose of energy saving. In the prior art, a fixed pressure value less than or equal to the overflow pressu...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a control method, control system, engineering equipment and storage medium for the slewing mechanism to solve the problem of low adaptability to working conditions in the prior art

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