负载方向智能识别的挖掘机斗杆内收节能控制方法OA

To reduce the energy consumption caused by throttling losses during excavator arm retraction,this paper proposes an energy-saving control method based on intelligent load direction recognition.First,displacement data from the boom,arm,and bucket cylinders are used to establish a kinematic model of the working device.The composite center of gravity is calculated in real time,and the theoretical transition interval in which the load force acting on the arm cylinder changes from a pulling load to a pushing load is predicted.Then,the actual load force is dynamically determined using pressure data from both chambers of the arm cylinder,enabling accurate identification of the load transition point within the predicted interval.Based on the load characteristics,the arm return hydraulic circuit is redesigned,and a corresponding energy-saving control strategy is developed to reduce energy losses during the return process.Experimental results demonstrate that the proposed method ensures smooth arm retraction while reducing energy consumption during the pushing-load phase by 40.8%and lowering the total energy consumption of a complete retraction cycle by 17%.The proposed method provides an engineeringly feasible solution for improving the energy efficiency of hydraulic excavator arm retraction operations.