A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Excavator power compensation and fault diagnosis method
The invention discloses a power compensation and fault diagnosis method for an excavator. The method comprises the following steps: selecting a power matching mode, entering power matching control, controlling a full-electric control handle to perform operation action composition, and calibrating the power of a current electric control main pump after the action is completed; the power of the electric control main pump is changed by adjusting the current value of the electric control main pump; if the adjusted current value of the electric control main pump exceeds a preset current threshold value, outputting the preset current threshold value as a final current value Ip; and if the adjusted current value of the electric control main pump does not exceed the preset current threshold value, the power of the electric control main pump is changed by adjusting the current value of the electric control main pump again according to the size relation between the engine torque load rate T and the preset load rate. And according to the size relation between the final current value Ip of the electric control main pump and the factory current value, whether the engine breaks down or the electric control main pump breaks down is judged. According to the invention, full-life-cycle matching of the engine and the hydraulic system can be realized, and fault problem points can be deduced through current values.
本发明公开了一种挖掘机功率补偿及故障诊断方法，包括：选择功率匹配模式，进入功率匹配控制，控制全电控手柄进行操作动作复合，动作完成后标定当前电控主泵功率；通过调整电控主泵电流值，改变电控主泵功率；如果调整后的电控主泵电流值超出预设电流阈值，则将预设电流阈值输出为最终电流值Ip；如果调整后的电控主泵电流值没有超出预设电流阈值，则根据发动机扭矩负载率T与预设负载率的大小关系，再次通过调整电控主泵电流值，改变电控主泵功率。根据电控主泵最终电流值Ip与出厂电流值的大小关系，判断是发动机故障或电控主泵故障。本发明能够实现发动机与液压系统全生命周期的匹配，通过电流值推断故障问题点。
Excavator power compensation and fault diagnosis method
The invention discloses a power compensation and fault diagnosis method for an excavator. The method comprises the following steps: selecting a power matching mode, entering power matching control, controlling a full-electric control handle to perform operation action composition, and calibrating the power of a current electric control main pump after the action is completed; the power of the electric control main pump is changed by adjusting the current value of the electric control main pump; if the adjusted current value of the electric control main pump exceeds a preset current threshold value, outputting the preset current threshold value as a final current value Ip; and if the adjusted current value of the electric control main pump does not exceed the preset current threshold value, the power of the electric control main pump is changed by adjusting the current value of the electric control main pump again according to the size relation between the engine torque load rate T and the preset load rate. And according to the size relation between the final current value Ip of the electric control main pump and the factory current value, whether the engine breaks down or the electric control main pump breaks down is judged. According to the invention, full-life-cycle matching of the engine and the hydraulic system can be realized, and fault problem points can be deduced through current values.
本发明公开了一种挖掘机功率补偿及故障诊断方法，包括：选择功率匹配模式，进入功率匹配控制，控制全电控手柄进行操作动作复合，动作完成后标定当前电控主泵功率；通过调整电控主泵电流值，改变电控主泵功率；如果调整后的电控主泵电流值超出预设电流阈值，则将预设电流阈值输出为最终电流值Ip；如果调整后的电控主泵电流值没有超出预设电流阈值，则根据发动机扭矩负载率T与预设负载率的大小关系，再次通过调整电控主泵电流值，改变电控主泵功率。根据电控主泵最终电流值Ip与出厂电流值的大小关系，判断是发动机故障或电控主泵故障。本发明能够实现发动机与液压系统全生命周期的匹配，通过电流值推断故障问题点。
Excavator power compensation and fault diagnosis method
一种挖掘机功率补偿及故障诊断方法
WANG ZHEN (author) / LIU YUEJI (author) / ZHAO PENGKUN (author) / WANG RONGBIAO (author) / YANG SONGSHAN (author) / CUI XIANGYI (author)
2024-04-12
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
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