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A platform for research: civil engineering, architecture and urbanism
Double-pump confluence control method for excavator
The invention relates to a double-pump confluence control method for an excavator, and belongs to the technical field of hydraulic excavators. The method includes the steps that system pressure is collected, and a pressure sensor collects a whole machine main oil way pressure signal and a pilot pressure signal; program algorithm calculation is conducted, specifically, a main controller calculatesthe double-pump confluence flow needed by the excavator through a program algorithm; accurate flow demand is output, specifically, a corresponding target demand is output according to the calculationresult in the step 2; the optimal efficiency is calculated, and the output displacement of an electromagnetic valve of a pump 1 and an electromagnetic valve of a pump 2 are calculated according to theefficiency characteristic curves of the double pumps; the output of the two pumps are controlled, corresponding control current is output according to the output displacement, calculated in the step4, of the electromagnetic valve of the pump 1 and the electromagnetic valve of the pump 2, and the electromagnetic valve of the pump 1 and the electromagnetic valve of the pump 2 are controlled to output hydraulic oil at the specific flow. The method has the beneficial effects that the optimal efficiency of the main pump is achieved, energy waste is reduced, and the fuel economy is improved; the method is simple in structure and easy to control and has the advantages of low investment, obvious economic benefits and high reliability.
本发明涉及一种挖掘机双泵合流控制方法，属于液压挖掘机技术领域。包括步骤：采集系统压力，压力传感器采集整机主油路压力信号和先导压力信号；程序算法计算，主控制器通过程序算法对挖掘机所需双泵合流流量进行计算；精确流量需求，根据步骤2计算结果输出相应的目标需求；效率最优计算，根据双泵的效率特性曲线，计算泵1电磁阀和泵2电磁阀的输出排量；控制两个泵输出，根据步骤4计算的泵1电磁阀和泵2电磁阀的输出排量，输出相应的控制电流，控制泵1电磁阀和泵2电磁阀输出特定流量的液压油。本发明的有益效果是：实现主泵效率最优，减少能量浪费，提高燃油经济性；结构简洁、控制简单，具有投入低、经济效益明显、可靠性高的优点。
Double-pump confluence control method for excavator
The invention relates to a double-pump confluence control method for an excavator, and belongs to the technical field of hydraulic excavators. The method includes the steps that system pressure is collected, and a pressure sensor collects a whole machine main oil way pressure signal and a pilot pressure signal; program algorithm calculation is conducted, specifically, a main controller calculatesthe double-pump confluence flow needed by the excavator through a program algorithm; accurate flow demand is output, specifically, a corresponding target demand is output according to the calculationresult in the step 2; the optimal efficiency is calculated, and the output displacement of an electromagnetic valve of a pump 1 and an electromagnetic valve of a pump 2 are calculated according to theefficiency characteristic curves of the double pumps; the output of the two pumps are controlled, corresponding control current is output according to the output displacement, calculated in the step4, of the electromagnetic valve of the pump 1 and the electromagnetic valve of the pump 2, and the electromagnetic valve of the pump 1 and the electromagnetic valve of the pump 2 are controlled to output hydraulic oil at the specific flow. The method has the beneficial effects that the optimal efficiency of the main pump is achieved, energy waste is reduced, and the fuel economy is improved; the method is simple in structure and easy to control and has the advantages of low investment, obvious economic benefits and high reliability.
本发明涉及一种挖掘机双泵合流控制方法，属于液压挖掘机技术领域。包括步骤：采集系统压力，压力传感器采集整机主油路压力信号和先导压力信号；程序算法计算，主控制器通过程序算法对挖掘机所需双泵合流流量进行计算；精确流量需求，根据步骤2计算结果输出相应的目标需求；效率最优计算，根据双泵的效率特性曲线，计算泵1电磁阀和泵2电磁阀的输出排量；控制两个泵输出，根据步骤4计算的泵1电磁阀和泵2电磁阀的输出排量，输出相应的控制电流，控制泵1电磁阀和泵2电磁阀输出特定流量的液压油。本发明的有益效果是：实现主泵效率最优，减少能量浪费，提高燃油经济性；结构简洁、控制简单，具有投入低、经济效益明显、可靠性高的优点。
Double-pump confluence control method for excavator
一种挖掘机双泵合流控制方法
NIU DONGDONG (author) / GENG JIAWEN (author) / LIU LIXIANG (author) / WANG LU (author) / WANG XUTONG (author) / LYU CHUANWEI (author) / WANG DING (author) / WANG QING (author) / SONG JI (author) / XING ZECHENG (author)
2021-01-29
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
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