公开(公告)号：US12018462B2

公开(公告)日：2024-06-25

申请号：US17256818

申请日：2019-06-29

Applicant: DANFOSS POWER SOLUTIONS II TECHNOLOGY A/S

Inventor： Aaron H. Jagoda

IPC: E02F9/26 ,  E02F9/20

CPC classification number: E02F9/264 ,  E02F9/2041 ,  E02F9/265

Abstract: A hydraulic machine can include one or movable loads and one or more control units associated with actuators operating the movable loads. The control units can include an accelerometer, a gyroscope, and a magnetometer, the accelerometer being adapted to detect an orientation of the control unit relative to a gravity force vector, the magnetometer being adapted to detect an orientation of the control unit relative to a fixed magnetic field, and the gyroscope being adapted to detect yaw, pitch and roll, rates of the control unit. The magnetometer can be used to align the data from the control units such that the position, orientation, and velocity of the movable loads, including an end effector of the hydraulic machine, can be determined and controlled.

公开(公告)号：US11384510B2

公开(公告)日：2022-07-12

申请号：US17256834

申请日：2019-06-29

Applicant: Danfoss Power Solutions II Technology A/S

Inventor： Aaron H. Jagoda

IPC: E02F9/22 ,  F15B21/00

Abstract: A mobile hydraulic system includes a hydraulic actuator coupled to a load, and a control unit coupled to the load and/or to the hydraulic actuator. The control unit is adapted to anticipate an over-center transition of the load relative to a gravity vector prior to the over-center transition through the use of sensors configured with accelerometers, gyroscopes and magnetometers. In some examples, the over-center transition is from an overrunning driving of the load to a passive driving of the load. In some examples, the over-center transition is from a passive driving of the load to an overrunning driving of the load. In some examples, the control unit is adapted to control change in a metered flow through one or more ports of the associated actuator to minimize and/or prevent one or more hydraulic effects of the anticipated over-center transition. In some examples, the control unit controls the metered flow by causing one or more actuators (e.g., a solenoid) to shift one or more valve positions to change the flow through one or more ports of the associated actuator.