摘要
Abstract
The hydraulic system of agricultural machinery often experiences high energy consumption,rapid temperature rise,and delayed execution response in practical operations.In response to these issues,this article proposes a design approach for the coordinated optimization of hydraulic systems and electrical control,focusing on typical operational re-quirements such as lifting,steering,and depth adjustment.In the study,a basic hydraulic circuit consisting of a hy-draulic pump,an electric proportional valve,and a hydraulic cylinder or motor was constructed,and key parameters such as pump displacement,working pressure,valve group,and pipeline were matched and designed;On this basis,an electrical control system with a controller as the core is established,equipped with pressure,flow,and displacement(or velocity)sensors,to perform closed-loop regulation of the actuator,and to use PWM signals to achieve flow and pres-sure control of the proportional valve.The system was debugged and compared based on bench tests and field conditions.The results indicate that this design method can improve the response accuracy and operational stability of hydraulic and electrical control systems,and to some extent reduce system impact.关键词
农业机械/液压系统/电气控制/协同设计/电比例阀/闭环控制Key words
agricultural machinery/hydraulic system/electrical control/collaborative design/electric proportional valve/closed-loop control分类
农业科技
