1. Skid-Proof Operation of Wheel Loader Based on Model Prediction and Electro-Hydraulic Proportional Control Technology
- Author
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Bingwei Cao, Xinhui Liu, Wei Chen, Kuo Yang, and Peng Tan
- Subjects
Engine power ,business.product_category ,General Computer Science ,Computer science ,Proportional control ,skid-proof shovel control strategy ,02 engineering and technology ,01 natural sciences ,law.invention ,Control theory ,law ,PSO-SVM ,Torque ,General Materials Science ,Shovel ,Hydraulic machinery ,Electro-hydraulic proportional control technology ,010401 analytical chemistry ,General Engineering ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,Loader ,Skid (automobile) ,regression prediction model ,Drive shaft ,lcsh:Electrical engineering. Electronics. Nuclear engineering ,0210 nano-technology ,business ,lcsh:TK1-9971 - Abstract
Wheel loader shovel loading operation tests showed that when the tire slips, it not only causes waste of the engine power, but also increases the tire wear. In this paper, the regression prediction model is combined with the electro-hydraulic proportional control technology. For the first time, the method of adjusting the posture of the working device is proposed to realize the skid-proof shovel control strategy of the wheel loader. In this control strategy: (1) The electro-hydraulic proportional control technology applied to this wheel loader is introduced. (2) The load spectrum of the wheel loader is analyzed during the shovel loading operation. Moreover, combined with the drive shaft torque, pilot pressure and boom cylinder displacement, the particle swarm optimization-support vector machine (PSO-SVM) algorithm is used to complete the construction of the regression prediction model of the boom cylinder displacement. (3) A controller is designed based on the fractional-order PID control algorithm. The skid-proof control strategy is simulated and verified by constructing the joint simulation model. The corresponding program is prepared in the hydraulic system controller and the effectiveness of the control strategy and algorithm are verified by the wheel loader shovel loading operation.
- Published
- 2020