公开(公告)号：US09976641B2

公开(公告)日：2018-05-22

申请号：US15022397

申请日：2014-02-25

Applicant: Artemis Intelligent Power Limited

Inventor： Niall Caldwell ,  Daniel Abrahams ,  Daniil Dumnov

IPC: F16D31/02 ,  F16H39/16 ,  F04B49/06 ,  F04B49/22 ,  F03D7/02 ,  F04B1/053 ,  F04B1/06 ,  F04B11/00 ,  F04B17/02 ,  F03C1/40 ,  F03C1/053 ,  F16H61/4183 ,  F03D15/00 ,  F03D9/28 ,  F16H61/431

CPC classification number: F16H39/16 ,  F03C1/0447 ,  F03C1/045 ,  F03C1/053 ,  F03C1/0531 ,  F03D7/0296 ,  F03D9/25 ,  F03D9/28 ,  F03D9/32 ,  F03D15/00 ,  F04B1/053 ,  F04B1/0531 ,  F04B1/06 ,  F04B1/063 ,  F04B11/00 ,  F04B11/0075 ,  F04B17/02 ,  F04B49/065 ,  F04B49/22 ,  F05B2260/406 ,  F16H61/4183 ,  F16H61/431 ,  Y02E10/722 ,  Y02E10/723 ,  Y02P80/158

Abstract: A hydraulic transmission comprising a variable displacement pump and motor, at least one having cylinders having valves which are controllable on each cycle of cylinder working volume to determine the net displacement of working fluid by the cylinder. The transmission has a valve control module which determines a displacement of the pump and the motor by specifying a displacement demand. The pump and/or motor valve control module determine the frequency of intensity peaks in the frequency spectrum of the pattern of cylinders carrying out active and inactive cycles of cylinder working volume using a first procedure and, if these will fall within disallowed frequency bands including the resonant frequency of components with which the transmission is in mechanical communication, the displacement demand, or another input, is periodically modified to suppress generation of those frequencies. The hydraulic transmission is useful for example in a wind turbine generator, or a vehicle.

公开(公告)号：US11649727B2

公开(公告)日：2023-05-16

申请号：US16729196

申请日：2019-12-27

Applicant: ARTEMIS INTELLIGENT POWER LIMITED

Inventor： Niall Caldwell ,  Daniel Abrahams ,  Andrew Latham

IPC: F01B1/06 ,  F04B1/06 ,  F04B17/02

CPC classification number: F01B1/0675 ,  F04B1/06 ,  F04B17/02

Abstract: An electronically commutated hydraulic machine is coupled to a drivetrain. Working chambers of the hydraulic machine are connected to low and high pressure manifold through electronically controlled valves. The phase of opening and closing of the valves has a default. In order to avoid cycle failure due to acceleration events, for example due to backlash in the drivetrain, the phase of opening or closing of the electronically controlled valves is temporarily advanced or retarded from the default timing.