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1. 发明申请

WO2021242995A1 CONTROL SYSTEM FOR ACTUATING LIFTING FUNCTION 审中-公开
公开(公告)号：WO2021242995A1
公开(公告)日：2021-12-02
申请号：PCT/US2021/034476
申请日：2021-05-27
申请人： DANFOSS POWER SOLUTIONS INC.
发明人： DARNELL, Aaron , DU, Zhekang , NIELSEN, Simon
IPC分类号： B66F7/08 , B66F9/22
摘要： A hydraulic control system for linear actuation that provides a bypass flow during startup of a lifting command, provides a split flow between a cylinder and a reservoir once a minimum operating speed of a pump has been reached, and provides complete flow to a cylinder after the minimum operating speed of the pump has been reached. This is achieved through control of a flow control valve and a proportional flow control valve by a processor.

2. 发明申请

WO2020180923A1 METHOD FOR DETERMINING THE HEALTH STATUS OF THE HYDRAULIC CIRCUIT ARRANGEMENT 审中-公开
公开(公告)号：WO2020180923A1
公开(公告)日：2020-09-10
申请号：PCT/US2020/020877
申请日：2020-03-04
申请人： DANFOSS POWER SOLUTIONS, INC.
发明人： BUTLER, Molli , HERRERA, Marcus
IPC分类号： F15B19/00 , E02F9/26 , F16H61/4192
摘要： The invention relates to a method (25) of determining the health status of a hydraulic circuit arrangement comprising at least one hydraulic fluid working machine (2, 3). The health status is determined (29) using at least in part an actual temperature information (12) of the hydraulic circuit arrangement (1) that is compared to an expected temperature information (24) of the hydraulic circuit arrangement (1).

3. 发明申请

WO2015118398A1 LOW FRICTION COMPACT SERVO PISTON ASSEMBLY 审中-公开
标题翻译：低摩擦紧凑型伺服活塞组件
公开(公告)号：WO2015118398A1
公开(公告)日：2015-08-13
申请号：PCT/IB2015/000078
申请日：2015-01-28
申请人： DANFOSS POWER SOLUTIONS INC.
发明人： HANSEL, Jeffrey , WRIGHT, Joseph
IPC分类号： F04B1/20 , F04B1/32
CPC分类号： F15B13/00 , F04B1/2078 , F04B1/295 , F04B1/324
摘要： A servo piston assembly (10) having a servo piston body mounted within a servo piston cylinder (32). A pair of bushings (34) are mounted within each end of the servo piston body. An elongated bore (38) extends through the servo piston body and receives a guide rod (36) that extends out of the servo piston body and is received within the servo piston cylinder (32).
摘要翻译：伺服活塞组件（10）具有安装在伺服活塞缸（32）内的伺服活塞体。一对衬套（34）安装在伺服活塞体的每个端部内。延长的孔38延伸穿过伺服活塞主体并且接纳延伸出伺服活塞主体并被接纳在伺服活塞缸32内的导杆36。

4. 发明申请

WO2015140622A1 ELECTRONIC TORQUE AND PRESSURE CONTROL FOR LOAD SENSING PUMPS 审中-公开
标题翻译：负载传感泵的电子扭矩和压力控制
公开(公告)号：WO2015140622A1
公开(公告)日：2015-09-24
申请号：PCT/IB2015/000360
申请日：2015-03-18
申请人： DANFOSS POWER SOLUTIONS INC.
发明人： LIGENFELTER, Kevin , LAFAYETTE, Gary
IPC分类号： F04B1/29 , F04B1/32 , F04B49/06
CPC分类号： F04B49/065 , F04B1/295 , F04B1/324 , F04B2201/12041 , F04B2201/12051
摘要： A pump control system, comprising: a motor (12) configured to drive a pump (14); a pressure relief valve (22) in fluid communication with the pump (14); a torque control valve (32) connected to a swashplate of the pump (14) and in fluid communication with the pressure relief valve (22); a swashplate angle sensor (36) connected to the swashplate (34); and a computer (40) connected to the swashplate angle sensor (36) and the pressure relief valve (22) wherein the computer (40) controls the pressure relief valve (22) based upon swashplate displacement to achieve maximum system pressure. The corresponding method of controlling is also disclosed.
摘要翻译：一种泵控制系统，包括：电动机（12），构造成驱动泵（14）; 与所述泵（14）流体连通的减压阀（22）; 与所述泵（14）的斜盘连接并与所述减压阀（22）流体连通的扭矩控制阀（32）; 连接到斜盘（34）的斜盘角传感器（36）; 以及连接到斜盘角度传感器（36）和压力释放阀（22）的计算机（40），其中计算机（40）基于斜盘位移来控制减压阀（22）以实现最大系统压力。还公开了相应的控制方法。

5. 发明申请

WO2022226026A1 HYDRAULIC CIRCUIT ARRANGEMENT AND CONTROL SYSTEM FOR GANGED ELECTRONICALLY-COMMUTATED PUMPS 审中-公开
公开(公告)号：WO2022226026A1
公开(公告)日：2022-10-27
申请号：PCT/US2022/025486
申请日：2022-04-20
申请人： DANFOSS POWER SOLUTIONS, INC.
发明人： SZCZEPANIAK, Connor , LAGARDE, Jeremie
IPC分类号： F04B23/06 , F04B7/00 , F04B1/06 , F04B49/06 , F04B11/00
摘要： A hydraulic circuit arrangement includes a plurality of electronically- commutated pumps (10a-10f) providing flow to a common hydraulic line (65), each of the electronically-commutated pumps provided with an associated electronically-commutated pump controller (18a-18f). The plurality of electronically-commutated pumps (10a-10f) includes one or more quantized electronically-commutated pumps and one or more unquantized electronically-commutated pumps, wherein the one or more quantized electronically-commutated pumps (10a) are configured to produce a quantized target flow value that is less than a total target flow value determined for the common hydraulic line, and wherein the one or more unquantized electronically-commutated pumps (10b) are configured to produce an unquantized target flow value that is the difference between the quantized target flow value and the total target flow value.

6. 发明申请

WO2022144591A1 FAN DRIVE SYSTEM 审中-公开
公开(公告)号：WO2022144591A1
公开(公告)日：2022-07-07
申请号：PCT/IB2021/022244
申请日：2021-12-20
申请人： DANFOSS POWER SOLUTIONS INC.
发明人： NIELSEN, Elias
IPC分类号： F04D27/00 , F04D25/04 , F02D25/04
摘要： Hydraulic fan system and method for controlling the speed of a hydraulic fan system. The fan system comprises a fan operated by a hydraulic motor which is driven by a hydraulic variable displacement pump comprising a displacement volume adjusting element. A tilt angle of the displacement volume adjusting element can be adjusted by controlling a tilt current supplied to an electronic displacement control unit. The hydraulic fan system further comprises means for determining the volumetric flow rate of the pump and a control unit comprising: a signal connection to the means for determining the volumetric flow rate of the pump, a signal connection to a fan speed setting device, and a fan speed calculating unit for calculating a fan speed from the determined volumetric flow rate, a fan speed error determining unit for determining a fan speed error by comparing the calculated fan speed to the fan speed set by the fan speed setting device. The control unit can supply an adapted tilt current to the electronic displacement control unit in order to adjust the tilt angle of the displacement volume adjusting device, such that the volumetric flow rate can be adapted in order to reduce the fan speed error, wherein an ideal tilt current value is derived from the calculated fan speed and safety actions are performed in order to prevent damage to the fan, if the difference between the ideal tilt current value and the adapted tilt current is higher than a tilt current threshold value.

7. 发明申请

WO2021252592A1 HYDRAULIC CONTROL SYSTEM FOR LINEAR ACTUATION 审中-公开
公开(公告)号：WO2021252592A1
公开(公告)日：2021-12-16
申请号：PCT/US2021/036558
申请日：2021-06-09
申请人： DANFOSS POWER SOLUTIONS INC.
发明人： DARNELL, Aaron , DU, Zhekang , NIELSEN, Simon
IPC分类号： F04B23/02
摘要： A hydraulic control system for linear actuation that includes an electric motor connected to a hydraulic pump and a hydraulic cylinder connected to the pump by a first flow line. A pressure transducer, a pressure control valve, and a check valve are connected to the first flow line between the pump and the cylinder and a tank is connected to the pump by a second flow line and the cylinder by a return line. A control valve is connected between the first flow line and the return line.

8. 发明申请

WO2020112134A1 METHOD AND SYSTEM FOR REMOTE MACHINE CONTROL 审中-公开
公开(公告)号：WO2020112134A1
公开(公告)日：2020-06-04
申请号：PCT/US2018/063259
申请日：2018-11-30
申请人： DANFOSS POWER SOLUTIONS, INC.
发明人： BYRNES, Mark D. , DOCKTER, Rodney L. , WOODARD, Chris
IPC分类号： H04L29/06 , H04L1/00
摘要： A system and method for secure remote control of a machine includes transmitting video data from a camera on the machine to an operator controller located at a remote operation station, and receiving, at a machine controller of the machine, an operator control message from the operator controller. The operator control message is based on an input device actuated in response to the video data. The method further includes confirming validity of the operator control message based, at least in part, on the video data transmitted from the camera to the operator controller, and controlling the machine with the operator control message when validity of the operator control message is confirmed.

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