专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

US20240117821A1 PNEUMATIC CYLINDER SYSTEM 审中-公开
公开(公告)号：US20240117821A1
公开(公告)日：2024-04-11
申请号：US18264989
申请日：2022-02-08
申请人： STACCATO TECHNOLOGIES AB
发明人： Per-Ove JOHANSSON , Twana IBRAHIM
IPC分类号： F15B9/09 , F15B11/06
CPC分类号： F15B9/09 , F15B11/06
摘要： A cylinder positioning system (1) comprising a control unit for a pneumatically driven cylinder (14) in a cylinder chamber is provided. The control unit comprising a controller configured to control a set of drive units of the cylinder positioning system. Each drive unit emits a drive current to a respective electromagnetic direct acting valve (9,10, 11, 12) of the cylinder positioning system. Each respective electromagnetic direct acting valve has a closing/opening time of less than 2 ms. The control unit is configured to receive a set position for the cylinder and an actual position for the cylinder, to compare the set position of the cylinder with the actual position of the cylinder and to emit control signals to the drive units to move the cylinder from the actual position towards the set position. By providing a very short time for actuation of the valves, in combination with an actual position for the cylinder a closed loop control can be achieved to control the flow to the actuating cylinder to be proportional over essentially the entire dynamic range of the pneumatic position control system. This in turn can make the control more accurate and robust and with smaller latency.

2. 发明授权

US11828040B2 Method and apparatus for mitigating machine operator command delay 有权
公开(公告)号：US11828040B2
公开(公告)日：2023-11-28
申请号：US16585662
申请日：2019-09-27
申请人： Topcon Positioning Systems, Inc.
发明人： Vernon Joseph Brabec
IPC分类号： F15B9/09 , E02F3/65 , E02F3/38 , E02F3/43 , E02F3/84 , E02F9/20 , E02F9/26
CPC分类号： E02F3/651 , E02F3/382 , E02F3/437 , E02F3/845 , E02F9/2033 , E02F9/265
摘要： A method for machine grade assist includes determining whether user input will cause an implement of a machine to dig below a desired grade. User input to move a stick of an excavator can be blocked and/or delayed using hydraulic pressure so that movement of both the stick and the boom of the excavator can be synchronized to prevent a bucket of the excavator from digging below a desired grade when the stick is moved.

3. 发明授权

US11794353B2 Braking and regeneration control in a legged robot 有权
公开(公告)号：US11794353B2
公开(公告)日：2023-10-24
申请号：US17451669
申请日：2021-10-21
申请人： Boston Dynamics, Inc.
发明人： Alex Khripin , Stephen Berard , Alfred Rizzi
IPC分类号： B25J9/20 , F15B9/09 , B62D57/032 , B25J5/00
CPC分类号： B25J9/20 , B25J5/00 , B62D57/032 , F15B9/09 , Y10S901/01
摘要： An example robot includes a hydraulic actuator cylinder controlling motion of a member of the robot. The hydraulic actuator cylinder comprises a piston, a first chamber, and a second chamber. A valve system controls hydraulic fluid flow between a hydraulic supply line of pressurized hydraulic fluid, the first and second chambers, and a return line. A controller may provide a first signal to the valve system so as to begin moving the piston based on a trajectory comprising moving in a forward direction, stopping, and moving in a reverse direction. The controller may provide a second signal to the valve system so as to cause the piston to override the trajectory as it moves in the forward direction and stop at a given position, and then provide a third signal to the valve system so as to resume moving the piston in the reverse direction based on the trajectory.

4. 发明授权

US11193510B2 Hydraulic stage 有权
公开(公告)号：US11193510B2
公开(公告)日：2021-12-07
申请号：US16435659
申请日：2019-06-10
申请人： Microtecnica S.r.l.
发明人： Agostino Medaglia
IPC分类号： F15B13/043 , F15B9/09 , F15B13/044
摘要： A hydraulic stage includes a hydraulic element located between and sealing a first and second chamber, wherein the first chamber comprises at least one aperture through which fluid is arranged to flow into or out of the first chamber; and at least one piezoelectric element which is positioned adjacent to the at least one aperture and is arranged to deform in response to an applied potential difference such that it blocks or obstructs the at least one aperture to a varying degree according to the level of deformation, so as to control fluid flow into or out of the first chamber. The level of deformation of the piezoelectric element thus reduces or increases an effective size of the inlet or outlet aperture to which it is adjacent, restricting or permitting an increase in fluid flow accordingly.

5. 发明申请

US20210199139A1 SERVO VALVE UNIT AND APPARATUS 有权
公开(公告)号：US20210199139A1
公开(公告)日：2021-07-01
申请号：US17057857
申请日：2020-01-10
申请人： EISHIN TECHNOLOGY CO., LTD
发明人： Chikanari Kubo
IPC分类号： F15B9/03 , F16K31/42 , F15B9/09
摘要： A servo valve unit capable of precisely controlling the position of a pneumatic cylinder that does not require a servo amplifier and a small sized and/or high durability servo valve unit are disclosed. The servo valve unit comprises a unit body having a first end portion and a second end portion, a first valve portion, a second valve portion, a first seal member that opens and closes the first valve portion, a second seal member that opens and closes the second valve portion, a first drive mechanism that drives the first seal member by a first electric pulse, a second seal member that drives the second seal member by a second electric pulse, a supply flow path that extends between the first end and the first valve, an exhaust flow path that extends between the second end and the second valve, a common flow path connected to the supply flow path and the exhaust flow path via the first valve portion and the second valve portion, and a drive flow path connected to the pneumatic actuator. The first drive mechanism and the second drive mechanism are arranged in a drive mechanism arrangement portion located between the first end portion and the second end portion. The drive air flow path can branch from a branch portion located between the drive mechanism arrangement portion and the first end portion and extends to the first end portion. Alternatively drive air flow path can branch from the common flow path from a branch portion located between the drive mechanism arrangement portion and the second end portion and extends to the second end portion.

6. 发明申请

US20210123458A1 Failsafe Electro-hydraulic Servo Valve 有权
公开(公告)号：US20210123458A1
公开(公告)日：2021-04-29
申请号：US16664571
申请日：2019-10-25
申请人： Woodward, Inc.
发明人： Jordan Loren Loos
IPC分类号： F15B9/09 , F16K11/07
摘要： The subject matter of this specification can be embodied in, among other things, a fluid valve assembly that includes a first fluid port, a second fluid port, a third fluid port, a valve spool configured to be positioned at a first position, a second position away from the first position, a third position away from the first position opposite the second valve position, the valve spool defining a first fluid duct configured to fluidly connect the first fluid port to the second fluid port in the first valve position, a second fluid duct configured to fluidly connect the first fluid port to the third fluid port in the second valve position, and a third fluid duct configured to fluidly connect the first fluid port to the second fluid port in the third valve position.

7. 发明授权

US10954969B2 Servo governor by PWM 有权
公开(公告)号：US10954969B2
公开(公告)日：2021-03-23
申请号：US16059314
申请日：2018-08-09
申请人： Shahin Fallahi
发明人： Shahin Fallahi
IPC分类号： F15B13/04 , F15B9/09 , F15B13/044 , F15B13/16 , F03D7/02
摘要： A servo actuator is provided which may comprise a controller configured to control a plurality of solenoid valves based upon an output signal. The plurality of solenoid valves may be used to control the position of the object. For example, a set of solenoid valves, of the plurality of solenoid valves, may be configured to conduct fluid from a tank into a first chamber of the cylinder, conduct fluid from the tank into a second chamber of the cylinder, conduct fluid from the second chamber of the cylinder into a first solenoid valve and/or conduct fluid from the first chamber of the cylinder into the first solenoid valve. The first solenoid valve, of the plurality of solenoid valves, may be configured to conduct fluid from the set of solenoid valves into a vent valve based upon a pulse width modulation (PWM) signal received from the controller.

8. 发明授权

US10851810B2 Actuator limit controller 有权
公开(公告)号：US10851810B2
公开(公告)日：2020-12-01
申请号：US16550903
申请日：2019-08-26
申请人： Boston Dynamics, Inc.
发明人： Alex Perkins , Kevin Blankespoor , Alfred Rizzi
IPC分类号： F15B11/048 , F15B9/09 , F15B21/08 , F15B15/28 , F15B15/22
摘要： In some applications, a piston of a hydraulic actuator may move at high speeds, and large undesired forces may be generated if the piston reaches an end-stop of the hydraulic actuator at a high speed. The undesired forces may, for example, cause mechanical damage in the hydraulic actuator. A controller may receive information indicative of the piston reaching a first position at a first threshold distance from the end-stop, and, in response, may modify a signal to a valve assembly controlling flow of hydraulic fluid to and from the hydraulic actuator. Further, the controller may receive information indicative of the piston reaching a second position at a second threshold distance closer to the end-stop of the hydraulic actuator, and, in response, the controller may further modify the signal to the valve assembly so as to apply a force on the piston in a away from the end-stop.

9. 发明授权

US10851808B2 Piezohydraulic actuator 有权
公开(公告)号：US10851808B2
公开(公告)日：2020-12-01
申请号：US16485233
申请日：2018-02-05
申请人： Siemens Aktiengesellschaft
发明人： Georg Bachmaier , Christian Bachmann , Wolfgang Zöls , Iason Vittorias
IPC分类号： F15B11/04 , F15B7/08 , F15B9/09 , F15B11/036
摘要： An actuator comprising: a piezo actuator; a drive having a drive chamber and a drive piston element driven by the piezo actuator; a first output having an output chamber and a piston element; and a second output having an output chamber and a piston element. At least part of the hydraulic fluid is conveyed out of the drive chamber by movement of the drive piston element and into the first output chamber. At least part of the hydraulic fluid is conveyed out of the drive chamber and into the second output chamber. The second output piston element has a hydraulically active second output face which is different in size from the first output face. There may be a coupling device mechanically coupling the first output piston element to the second output piston element.

10. 发明授权

US10625721B2 Hydraulic pressure control device 有权
公开(公告)号：US10625721B2
公开(公告)日：2020-04-21
申请号：US15778455
申请日：2016-11-24
申请人： ADVICS CO., LTD. , TOYOTA JIDOSHA KABUSHIKI KAISHA
发明人： Masaki Ninoyu , Takahiro Okano , Masaaki Komazawa
IPC分类号： B60T8/36 , B60T8/40 , B60T7/04 , B60T13/66 , B60T13/68 , B60T13/14 , F15B9/09
CPC分类号： B60T8/36 , B60T7/042 , B60T8/40 , B60T8/4077 , B60T13/14 , B60T13/145 , B60T13/662 , B60T13/686 , F15B9/09
摘要： The hydraulic pressure control device has an idle region, and is provided with a control portion, and a correcting portion which, in cases when the reaction time of the actual pressure to pressure increasing control or pressure decreasing control exceeds a predetermined threshold time, corrects a control current towards the side in which the flow-rate is increased. In cases when a judging portion has judged that the pressure increasing control is in the idle area, the correcting portion applies, as the threshold time, an idle threshold time set to a value different from the threshold time that in cases when the judging portion has not judged that the pressure increasing control is in the idle area. Furthermore, in cases when the reaction time of the actual pressure to the pressure increasing control exceeds the idle threshold time, the correcting portion corrects the control current.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式