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公开(公告)号：US20240101090A1
公开(公告)日：2024-03-28
申请号：US17769012
申请日：2020-10-14
Applicant: BYD COMPANY LIMITED
Inventor： Yugang YAO , Guoshan LIU , Donglin SU , Jing LIU , Nan ZHANG
CPC classification number: B60T13/20 , B60T13/745 , B60T17/221 , F04B17/00 , F04B49/00 , F04B2201/1201
Abstract: A piston pump group for a brake system and a control method thereof are provided, and the piston pump group includes: a piston, a pump body provided with an operating chamber, and a transmission mechanism used for driving the piston to move in the operating chamber, where the transmission mechanism includes a lead screw transmission assembly, a follower, and a planetary gear assembly used for transmitting power to the lead screw transmission assembly, the follower is fixedly connected to the piston, the lead screw transmission assembly is used for driving the follower to move relative to the operating chamber, and a limiting member used for limiting the movement of the follower is disposed between the lead screw transmission assembly and the follower.
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公开(公告)号：US11920581B2
公开(公告)日：2024-03-05
申请号：US17162973
申请日：2021-01-29
Applicant: Masterflex, LLC
Inventor： Phuong Le Pham
CPC classification number: F04B49/20 , F04B43/08 , F04B49/065 , F04B49/103 , F04B43/12 , F04B2201/1201 , F04B2203/0209 , F04B2205/09 , F04B2207/043
Abstract: Aspects are provided for positive displacement pumps and methods and systems for controlling such pumps for dispensing at a flow rate based on a downstream flow sensor. A pump controller determines a targeted motor speed for a flow rate set point based on a flow rate function. The pump controller determines a predicted movement time for a motor of the pump to change from a current motor speed to the targeted motor speed, a predicted wait time to reach a flow rate corresponding to the targeted motor speed, and a measurement time after the wait time. The pump controller controls the positive displacement pump according to consecutive control cycles, each control cycle includes a pump movement sub-cycle, a wait sub-cycle, and a measurement sub-cycle. The pump controller determines a measured flow rate during the measurement sub-cycle. A subsequent control cycle is based on the measured flow rate.
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公开(公告)号：US20240026876A1
公开(公告)日：2024-01-25
申请号：US17813573
申请日：2022-07-19
Applicant: Caterpillar Inc.
Inventor： Lucas J. PETERSON , David Alexandru VOICULESCU , Andy PUBLES , Mark Francis GRIMES
CPC classification number: F04B49/103 , F04B9/02 , F04B23/06 , F04B49/065 , F04B2201/1201 , F04B2201/1241 , F04B2201/1208 , F04B2203/0207 , F04B2203/0209 , F04B2205/06 , E21B43/2607
Abstract: In some implementations, a controller may obtain a set of measurement values associated with the dual-pump single-power source system, wherein the set of measurement values includes at least one of one or more speed measurements associated with a clutch that is coupled to a power source and a first pump of the dual-pump single-power source system, a measurement value indicating an output speed of the power source, or a first crank angle associated with the first pump and a second crank angle associated with a second pump of the dual-pump single-power source system. The controller may detect that the clutch is experiencing slippage based on comparing at least two measurement values of the set of measurement values. The controller may perform an action to cause the clutch to disengage a mechanical connection between the first pump and the power source while the power source is running and is mechanically connected to the second pump.
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公开(公告)号：US11846279B2
公开(公告)日：2023-12-19
申请号：US17162908
申请日：2021-01-29
Applicant: Masterflex, LLC
Inventor： Phuong Le Pham
CPC classification number: F04B49/065 , F04B43/08 , F04B43/09 , F04B49/103 , F04B49/106 , F04B2201/1201 , F04B2205/09
Abstract: Aspects are provided for positive displacement pumps and methods and systems for controlling such positive displacement pumps for accurate volume dispensing. The pump may run a calibration procedure to determine a mapping between a pump speed and a flow rate for a current configuration of the positive displacement pump, a tubing size, and a fluid characteristic. A pump controller may determine a pump motion profile based on the mapping. The pump motion profile includes an acceleration phase, a constant speed phase, and a deceleration phase such that a total volume pumped according to the pump motion profile and the mapping is equal to a target volume. The pump controller may determine an adjustment to the pump motion profile based on a constant flow rate measured during operation. The pump controller may decelerate the positive displacement pump according to the adjusted pump motion profile until the target volume is dispensed.
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公开(公告)号：US20170037845A1
公开(公告)日：2017-02-09
申请号：US14945163
申请日：2015-11-18
Applicant: General Electric Company
Inventor： Omar Al Assad , Rogier Sebastiaan Blom , Gary Hughes , Justin Edwin Barton , Peter Westerkamp
CPC classification number: F04B49/20 , E21B43/126 , E21B47/0007 , F04B19/22 , F04B47/022 , F04B49/065 , F04B51/00 , F04B53/14 , F04B2201/0201 , F04B2201/0202 , F04B2201/0203 , F04B2201/1201 , F04B2201/121 , F04B2201/1211
Abstract: A controller for operating a rod pumping unit at a pump speed. The controller includes a processor configured to operate a pump piston of the rod pumping unit at a first speed. The processor is further configured to determine a pump fillage level for a pump stroke based on a position signal and a load signal. The processor is further configured to reduce the pump speed to a second speed based on the pump fillage level for the pump stroke.
Abstract translation: 用于以泵速度操作杆式抽油机的控制器。 控制器包括处理器，该处理器被配置为以第一速度操作杆式抽油机的泵活塞。 处理器还被配置为基于位置信号和负载信号来确定泵冲程的泵填充水平。 处理器还被配置为基于泵冲程的泵填充水平将泵速降低到第二速度。
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Patent Agency Ranking
公开(公告)号：US20160084724A1
公开(公告)日：2016-03-24
申请号：US14861352
申请日：2015-09-22
Applicant: OKUMA Corporation
Inventor： Tomohiro SHIBATA
CPC classification number: F04B49/103 , F04B49/065 , F04B49/08 , F04B51/00 , F04B2201/1201 , F04B2201/1202 , F04B2205/06 , F04B2207/01
Abstract: A hydraulic pressure control device comprising: a hydraulic sensor provided between a hydraulic pump and a load; a speed command arithmetic unit configured to output a speed command value Vc based on a difference between a hydraulic pressure detection value Pd from the hydraulic sensor and a hydraulic pressure command value Pc; a torque command value arithmetic unit configured to calculate a torque command value Tc based on a difference between a speed detection value Vd of a motor and the speed command value Vc; a current controller configured to control current of the motor based on the torque command value Tc; and a hydraulic pressure abnormality detector configured to detect whether a hydraulic circuit has abnormality based on the speed command value Vc and an operating condition of the load of the hydraulic circuit commanded from an upper-level control device.
Abstract translation: 一种液压控制装置，包括：设置在液压泵和负载之间的液压传感器; 速度指令运算部，其基于来自所述液压传感器的液压检测值Pd与液压指令值Pc之差输出速度指令值Vc; 扭矩指令值运算部，其基于马达的速度检测值Vd与速度指令值Vc之差计算转矩指令值Tc; 电流控制器，被配置为基于转矩指令值Tc来控制电动机的电流; 以及液压异常检测器，其被配置为基于速度指令值Vc和从上位控制装置指令的液压回路的负载的运转状况来检测液压回路是否有异常。
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公开(公告)号：US09115770B2
公开(公告)日：2015-08-25
申请号：US13186122
申请日：2011-07-19
Applicant: George Kadlicko
Inventor： George Kadlicko
CPC classification number: F16D31/02 , F04B1/324 , F04B49/002 , F04B49/08 , F04B2201/0805 , F04B2201/1201 , F04B2201/12051 , Y10S92/02
Abstract: A variable capacity hydraulic machine has a rotating group located within a casing and a control housing secured to the casing to extend across and seal an opening in the casing. The control housing accommodates a control circuit and a pair of sensors to sense change in parameters associated with the rotating group. One of the sensors is positioned adjacent the barrel on the rotating group to sense rotational speed and the other senses displacement of the swashplate. The control housing accommodates a control valve and accumulator to supply fluid to the control valve.
Abstract translation: 可变容量液压机具有位于壳体内的旋转组和固定到壳体的控制壳体，以延伸跨过并密封壳体中的开口。 控制壳体容纳控制电路和一对传感器以感测与旋转组相关联的参数的变化。 传感器中的一个定位在旋转组上的筒附近以感测旋转速度，而另一个感测旋转斜盘的位移。 控制壳体容纳控制阀和蓄能器以将流体供应到控制阀。
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138.发明申请公开(公告)号：US20150233369A1
公开(公告)日：2015-08-20
申请号：US14620345
申请日：2015-02-12
Applicant: Stephen B. MAGUIRE
Inventor： Stephen B. MAGUIRE
CPC classification number: F04B23/02 , F04B23/00 , F04B49/02 , F04B49/065 , F04B49/20 , F04B2201/1201 , F16K21/18 , G05D9/04 , G05D9/12 , Y10T137/0324 , Y10T137/2673 , Y10T137/2698 , Y10T137/469 , Y10T137/4757 , Y10T137/7287 , Y10T137/7313 , Y10T137/7339 , Y10T137/86027 , Y10T137/86035
Abstract: Method and apparatus for furnishing process machines with liquid color from a supply thereof provides a loop conduit having respective ends receiving liquid color from the supply and discharging liquid color back into the supply, pumping liquid color through the loop conduit and discharging liquid color from the loop conduit at an intermediate position into a reservoir associated with a process machine upon liquid color level in the reservoir being at a low level limit.
Abstract translation: 用于从其供应源提供具有液体颜色的处理机器的方法和设备提供了一个环路导管，其具有从供给和排出液体颜色的液体颜色返回到供应中的相应端部，将液体颜色泵送通过环路导管并从环路排出液体颜色 在储存器中的液体颜色水平处于低水平限度时，在与加工机器相关联的储存器中的中间位置处的导管。
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公开(公告)号：US09074596B2
公开(公告)日：2015-07-07
申请号：US13425866
申请日：2012-03-21
Applicant: Shogo Miyamoto
Inventor： Shogo Miyamoto
IPC: F04B49/20 , F16H61/00 , F16H61/662 , F16H59/72
CPC classification number: F04B49/20 , F04B2201/1201 , F04B2203/0209 , F16H59/72 , F16H61/0031 , F16H61/66272 , F16H2312/14
Abstract: An electric oil pump for supplying oil to at least a part (a clutch) of a transmission is provided in parallel with a mechanical oil pump which is driven by an engine and supplies oil to each part of the transmission. In advance of an operation request to the electric oil pump, the electric oil pump is rotated at a first operation-preparation rotational speed which is a very low speed so as to replace oils in oil pipes controlled by the electric oil pump. Thereafter, the electric oil pump is rotated at a second operation-preparation rotational speed which is a relatively-high speed, and when an actual rotational speed reaches the second operation-preparation rotational speed, it is determined that operation preparation is completed.
Abstract translation: 与发动机驱动的机械油泵并联设置用于向变速器的至少一部分（离合器）供给油的电动油泵，并向变速器的各部分供给油。 在对电动油泵的操作要求之前，电动油泵以非常低的速度的第一作业准备转速旋转，以代替由电动油泵控制的油管中的油。 此后，电动油泵以相对高速度的第二运转准备转速转动，当实际转速达到第二运转准备转速时，判定为运转准备完成。
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公开(公告)号：US08997472B2
公开(公告)日：2015-04-07
申请号：US13201875
申请日：2010-03-03
Applicant: Hideaki Suzuki , Yoshinori Furuno , Jun Nishihata
Inventor： Hideaki Suzuki , Yoshinori Furuno , Jun Nishihata
CPC classification number: F04B49/10 , E02F9/26 , E02F9/267 , F04B49/065 , F04B2201/1201 , F04B2203/0209 , F04B2205/03 , F04B2205/05 , F04B2205/11 , F04B2207/03 , G05B23/024
Abstract: Provided is an abnormality detecting device for a construction machine that can estimate an abnormality occurring to a component (engine, pump, etc.) of the construction machine based on the relationship among a plurality of pieces of sensor information and thereby prevent machine failure. A correlation coefficient calculation unit 102 calculates correlation coefficients between time-series sensor values acquired by a plurality of sensors 101. A correlation coefficient comparison unit 103 compares the correlation coefficients and calculates the degree of difference between each correlation coefficient and other correlation coefficients. An abnormality judgment unit 104 judges that an abnormality has occurred to a part related to a sensor when the degree of difference calculated in regard to the sensor exceeds a preset value.
Abstract translation: 本发明提供一种能够根据多个传感器信息之间的关系来估计建筑机械的部件（发动机，泵等）发生的异常，从而防止机器故障的建筑机械的异常检测装置。 相关系数计算单元102计算由多个传感器101获取的时间序列传感器值之间的相关系数。相关系数比较单元103比较相关系数，并计算每个相关系数与其他相关系数之间的差异程度。 当针对传感器计算的差异度超过预设值时，异常判断单元104判断与传感器相关的部分发生异常。
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