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

Applicant: DANFOSS POWER SOLUTIONS INC.

Inventor： DARNELL, Aaron ,  DU, Zhekang ,  NIELSEN, Simon

IPC: B66F7/08 ,  B66F9/22

Abstract: 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.

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

Applicant: DANFOSS POWER SOLUTIONS INC.

Inventor： DARNELL, Aaron ,  DU, Zhekang ,  NIELSEN, Simon

IPC: F04B23/02

Abstract: 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.

公开(公告)号：EP3835175A2

公开(公告)日：2021-06-16

申请号：EP21155307.8

申请日：2019-10-17

Applicant: Danfoss Power Solutions Inc.

Inventor： DU, Zhekang ,  VAN DE STROET, Caleb

IPC: B62D11/00 ,  B62D11/04 ,  B62D11/08

Abstract: According to the present disclosure, a system for providing steering control in a dual path machine includes a propulsion controller operatively connected to plants of the machine for driving ground contacting elements, the propulsion controller being configured to control steering of the dual path machine through drive signals sent to the plants, and a brake controller operatively connected to left and right brakes of the machine, the brake controller being configured to control steering of the machine by providing differential brake pressures to the left and right brakes. The system of the present disclosure provides redundant steering control by receiving an input signal at the brake controller with an indication of steering position, receiving an input signal at the brake controller with an indication of brake position, and providing a differential brake pressure to brakes of the dual path machine based on the steering input signal and brake input signal.

公开(公告)号：EP3656650A3

公开(公告)日：2020-08-05

申请号：EP19203725.7

申请日：2019-10-17

Applicant: Danfoss Power Solutions Inc.

Inventor： DU, Zhekang ,  VAN DE STROET, Caleb

IPC: B62D11/00 ,  B62D11/04 ,  B62D11/08

Abstract: According to the present disclosure, a system for providing steering control in a dual path machine (10) includes a propulsion controller (26) operatively connected to plants (22, 24) of the machine for driving ground contacting elements, the propulsion controller being configured to control steering of the dual path machine through drive signals sent to the plants, and a brake controller (32) operatively connected to left and right brakes (28, 30) of the machine, the brake controller being configured to control steering of the machine by providing differential brake pressures to the left and right brakes. The system of the present disclosure provides redundant steering control by receiving an input signal at the brake controller with an indication of steering position, receiving an input signal at the brake controller with an indication of brake position, and providing a differential brake pressure to brakes of the dual path machine based on the steering input signal and brake input signal.

公开(公告)号：EP3656650A2

公开(公告)日：2020-05-27

申请号：EP19203725.7

申请日：2019-10-17

Applicant: Danfoss Power Solutions Inc.

Inventor： DU, Zhekang ,  VAN DE STROET, Caleb

IPC: B62D11/00 ,  B62D11/04 ,  B62D11/08

Abstract: According to the present disclosure, a system for providing steering control in a dual path machine (10) includes a propulsion controller (26) operatively connected to plants (22, 24) of the machine for driving ground contacting elements, the propulsion controller being configured to control steering of the dual path machine through drive signals sent to the plants, and a brake controller (32) operatively connected to left and right brakes (28, 30) of the machine, the brake controller being configured to control steering of the machine by providing differential brake pressures to the left and right brakes. The system of the present disclosure provides redundant steering control by receiving an input signal at the brake controller with an indication of steering position, receiving an input signal at the brake controller with an indication of brake position, and providing a differential brake pressure to brakes of the dual path machine based on the steering input signal and brake input signal.