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公开(公告)号：US12055955B2
公开(公告)日：2024-08-06
申请号：US17984696
申请日：2022-11-10
Applicant: Taiyuan University of Technology
CPC classification number: G05D16/16 , G05D16/028
Abstract: Disclosed is a flow control system for digital and mechanical redundant pressure compensation. On the basis of an original pressure compensation valve, two-position three-way electromagnetic valves are added to control the opening and closing of pressure compensation valves. Furthermore, pressure sensors and a controller are added, so that the system has a digital pressure compensation function. When the pressure sensor breaks down, the flow control system is switched to a mechanical compensation mode to achieve mechanical pressure compensation, the problem that system flow cannot be controlled when the sensor breaks down is solved, and the purpose of redundancy control is achieved. Moreover, the pressure compensation valve in the loop where the highest load is located can be controlled to be completely opened through the two-position three-way electromagnetic valve to reduce pressure loss of the valve port, and the pressure is not affected by load fluctuation.
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Patent Agency Ranking
公开(公告)号：US12000504B1
公开(公告)日：2024-06-04
申请号：US18506926
申请日：2023-11-10
Applicant: TAIYUAN UNIVERSITY OF TECHNOLOGY
Inventor： Long Quan , Xingyu Zhao , Lei Ge , Weinan Huang , Bo Wang
IPC: F16K37/00 , F15B13/04 , F15B13/043 , F15B13/044 , F15B19/00 , F16K31/383 , F16K31/40 , F16K31/42 , G05D7/06
CPC classification number: F16K37/0083 , F15B13/0402 , F15B13/043 , F15B13/0431 , F15B13/0433 , F15B13/0435 , F15B13/044 , F15B19/005 , F16K31/383 , F16K31/406 , F16K31/42 , F16K31/423 , F16K31/426 , F16K37/0041 , F16K37/005 , G05D7/0635 , F15B2211/327 , F15B2211/328 , F15B2211/329 , F15B2211/87
Abstract: A multifunctional electro-hydraulic flow control valve and a flow control method. The control valve comprises a main valve, a proportional pilot valve, a flow sensor, a multifunctional valve controller, a control cavity pressure sensor, an oil inlet pressure sensor, an oil outlet pressure sensor, a temperature sensor and a cloud storage. The invention has the characteristics that a flow of the main valve is continuously controlled without being influenced by load change without installing a pressure compensator in the system, and meanwhile, the valve has the function of a flow sensor, has low pressure loss and wide flow control range, and realizes integration of flow detection and control; and information such as flow, power and efficiency of each part in a hydraulic system is monitored in real time based on a multifunctional controller, key operation state monitoring, service life prediction and fault positioning of the control valve are achieved.
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公开(公告)号：US20230151830A1
公开(公告)日：2023-05-18
申请号：US17985205
申请日：2022-12-15
Applicant: Taiyuan University of Technology
Inventor： Long Quan , Shufei Qiao , Yunxiao Hao , Lei Ge , Bo Wang
CPC classification number: F15B15/088 , F15B13/06 , F15B2015/206
Abstract: The present disclosure relates to a hydraulic-electric coupling driven multi-actuator system and control method, and belongs to technical fields of hydraulic transmission and electro-mechanical transmission. The hydraulic-electric coupling driven multi-actuator system comprises one or more hydraulic-electric hybrid driven actuators, first inverters, control valves, centralized hydraulic units and control units, wherein the number of the first inverters and the number of the control valves are the same as that of the hydraulic-electric hybrid driven actuators; each hydraulic-electric hybrid driven actuator is correspondingly connected with one first inverter and one control valve; the centralized hydraulic units are connected with the control valves and configured to supply oil for the hydraulic-electric hybrid driven actuators and to perform power compensation; and the control units are respectively connected with the hydraulic-electric hybrid driven actuators, and each control unit is configured to control output torque of a first motor of the corresponding hydraulic-electric hybrid driven actuator based on pressure information of the hydraulic-electric hybrid driven actuator, such that pressure of driving cavities of the hydraulic-electric hybrid driven actuators is equal, which greatly reduces throttling loss caused by the load differences of the actuators.
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公开(公告)号：US11293460B2
公开(公告)日：2022-04-05
申请号：US16715679
申请日：2019-12-16
Applicant: Taiyuan University of Technology
IPC: F15B11/16 , E02F9/22 , F15B13/04 , F15B13/044 , F15B13/02
Abstract: The present invention provides an engineering machinery hydraulic system with compensation differential pressure controllable, uses an electronic pressure compensating valve to solve the problem of flow mismatch under conditions of pressure over-limit and flow saturation, and realizes proportional shunt control and high-precision flow distribution of the system. The engineering machinery hydraulic system disclosed in the present invention has the advantages of low energy consumption, fast response speed, and high flow control precision.
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公开(公告)号：US20200208378A1
公开(公告)日：2020-07-02
申请号：US16715679
申请日：2019-12-16
Applicant: Taiyuan University of Technology
Abstract: The present invention provides an engineering machinery hydraulic system with compensation differential pressure controllable, uses an electronic pressure compensating valve to solve the problem of flow mismatch under conditions of pressure over-limit and flow saturation, and realizes proportional shunt control and high-precision flow distribution of the system. The engineering machinery hydraulic system disclosed in the present invention has the advantages of low energy consumption, fast response speed, and high flow control precision.
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公开(公告)号：US11976676B2
公开(公告)日：2024-05-07
申请号：US17985205
申请日：2022-11-11
Applicant: Taiyuan University of Technology
Inventor： Long Quan , Shufei Qiao , Yunxiao Hao , Lei Ge , Bo Wang
CPC classification number: F15B15/088 , F15B13/06 , E02F9/2203 , E02F9/2271 , E02F9/2296 , F15B2015/206
Abstract: A hydraulic-electric coupling driven multi-actuator system and control method are provided. The system comprises one or more hydraulic-electric hybrid driven actuators, first inverters, control valves, centralized hydraulic units and control units, wherein each hydraulic-electric hybrid driven actuator is correspondingly connected with one first inverter and one control valve; the centralized hydraulic units are connected with the control valves and configured to supply oil for the hydraulic-electric hybrid driven actuators and to perform power compensation; and the control units are respectively connected with the hydraulic-electric hybrid driven actuators, and each control unit is configured to control output torque of a first motor of the corresponding hydraulic-electric hybrid driven actuator based on pressure information of the hydraulic-electric hybrid driven actuator, such that pressure of driving cavities of the hydraulic-electric hybrid driven actuators is equal.
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