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1.发明授权公开(公告)号：US08935009B2
公开(公告)日：2015-01-13
申请号：US13102864
申请日：2011-05-06
Applicant: Hongliu Du , Patrick W. Sullivan
Inventor： Hongliu Du , Patrick W. Sullivan
CPC classification number: G05D16/2073 , F04B1/29 , F04B23/06 , F04B49/03
Abstract: A method and apparatus for controlling discharge pressure and pump displacement of a plurality of variable displacement hydraulic pumps having connected discharge ports is provided. Each pump includes a swashplate and a control valve for controlling an angle of inclination of the swashplate. A desired first pump displacement control law is determined for a first pump and determined a desired second pump discharge pressure control law for a second pump. The first control law is used to determine a first intermediate control variable. The second control law is used to determine a second intermediate control variable. The control of the first and second pumps are combined using the first and second intermediate control variables. A desired first control valve setting for the control valve of the first pump is determined using the combined first and second intermediate control variables and the first control law. A desired second control valve setting for the control valve of the second pump is determined using the combined first and second intermediate control variables and the second control law.
Abstract translation: 提供一种用于控制具有连接的排出口的多个可变排量液压泵的排出压力和泵排量的方法和装置。 每个泵包括斜盘和用于控制斜盘倾斜角的控制阀。 对于第一泵确定期望的第一泵位移控制定律，并确定第二泵的期望的第二泵排出压力控制定律。 第一控制律用于确定第一中间控制变量。 第二控制律用于确定第二中间控制变量。 使用第一和第二中间控制变量组合第一和第二泵的控制。 使用组合的第一和第二中间控制变量和第一控制规则来确定用于第一泵的控制阀的期望的第一控制阀设置。 使用组合的第一和第二中间控制变量和第二控制律确定用于第二泵的控制阀的期望的第二控制阀设置。
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2.发明申请公开(公告)号：US20120283882A1
公开(公告)日：2012-11-08
申请号：US13102864
申请日：2011-05-06
Applicant: Hongliu Du , Patrick W. Sullivan
Inventor： Hongliu Du , Patrick W. Sullivan
CPC classification number: G05D16/2073 , F04B1/29 , F04B23/06 , F04B49/03
Abstract: A method and apparatus for controlling discharge pressure and pump displacement of a plurality of variable displacement hydraulic pumps having connected discharge ports is provided. Each pump includes a swashplate and a control valve for controlling an angle of inclination of the swashplate. A desired first pump displacement control law is determined for a first pump and determined a desired second pump discharge pressure control law for a second pump. The first control law is used to determine a first intermediate control variable. The second control law is used to determine a second intermediate control variable. The control of the first and second pumps are combined using the first and second intermediate control variables. A desired first control valve setting for the control valve of the first pump is determined using the combined first and second intermediate control variables and the first control law. A desired second control valve setting for the control valve of the second pump is determined using the combined first and second intermediate control variables and the second control law.
Abstract translation: 提供一种用于控制具有连接的排出口的多个可变排量液压泵的排出压力和泵排量的方法和装置。 每个泵包括斜盘和用于控制斜盘倾斜角的控制阀。 对于第一泵确定期望的第一泵位移控制定律，并确定第二泵的期望的第二泵排出压力控制定律。 第一控制律用于确定第一中间控制变量。 第二控制律用于确定第二中间控制变量。 使用第一和第二中间控制变量组合第一和第二泵的控制。 使用组合的第一和第二中间控制变量和第一控制规则来确定用于第一泵的控制阀的期望的第一控制阀设置。 使用组合的第一和第二中间控制变量和第二控制律确定用于第二泵的控制阀的期望的第二控制阀设置。
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公开(公告)号：US07493205B2
公开(公告)日：2009-02-17
申请号：US10869067
申请日：2004-06-17
Applicant: Hongliu Du , Saurabh Pandey , Thomas M. Sopko , Eric D. Stemler , Michael J. Barngrover , Brian D. Kuras
Inventor： Hongliu Du , Saurabh Pandey , Thomas M. Sopko , Eric D. Stemler , Michael J. Barngrover , Brian D. Kuras
IPC: G06F17/00
CPC classification number: B60W10/08 , B60K1/00 , B60L7/18 , B60T1/062 , B60T8/00 , B60T13/586 , B60W10/184 , B60W30/18109 , B60Y2200/411
Abstract: A method is provided for controlling braking in a vehicle having a motor and a brake. The method includes sensing an actual operating parameter of the motor and receiving a desired operating parameter of the motor. The motor is controlled based on the actual operating parameter and the desired operating parameter of the motor. The brake is controlled based on the actual operating parameter and the desired operating parameter of the motor and an output from the motor control.
Abstract translation: 提供一种用于控制具有马达和制动器的车辆中的制动的方法。 该方法包括感测电动机的实际操作参数并接收电动机的期望操作参数。 电机根据实际运行参数和电机所需的工作参数进行控制。 制动器根据实际的运行参数和电机的所需工作参数以及电机控制的输出进行控制。
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4.发明授权Apparatus and method for controlling a discharge pressure of a variable displacement hydraulic pump 有权用于控制可变排量液压泵的排出压力的装置和方法公开(公告)号：US06468046B1
公开(公告)日：2002-10-22
申请号：US09665242
申请日：2000-09-18
Applicant: Hongliu Du , Noah D. Manring
Inventor： Hongliu Du , Noah D. Manring
IPC: F04B126
CPC classification number: F04B49/002 , F04B1/324
Abstract: An apparatus and method for controlling a discharge pressure of a variable displacement hydraulic pump. The apparatus and method includes a swashplate pivotally attached to the pump, a control servo operable to increase an angle of the swashplate relative to the pump, a biasing servo operable to decrease the angle of the swashplate relative to the pump, a servo valve having an output port hydraulically connected to the control servo, a divertor line having a first end connected to the pump output port and a second end connected to the biasing servo, and means for controlling the servo valve as a function of the discharge pressure of the pump.
Abstract translation: 一种用于控制可变排量液压泵的排出压力的装置和方法。 该装置和方法包括枢转地附接到泵的斜盘，可操作以增加斜盘相对于泵的角度的控制伺服机构，可操作以减小斜盘相对于泵的角度的偏压伺服器，具有 液压连接到控制伺服的输出端口，具有连接到泵输出端口的第一端和连接到偏压伺服器的第二端的偏滤器线路，以及用于根据泵的排出压力控制伺服阀的装置。
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公开(公告)号：US08635941B2
公开(公告)日：2014-01-28
申请号：US12874248
申请日：2010-09-02
Applicant: Hongliu Du
Inventor： Hongliu Du
IPC: E02F9/22
CPC classification number: F04B49/002
Abstract: An electro-hydraulic control system for pump control is disclosed. The hydraulic actuator is configured to control the inclination of a swashplate. The position of the hydraulic actuator is controlled by controlling the flow of pressurized fluid into and out of two pressure chambers, one on either side of the actuator. A fluid passageway is provided that selectively connects the passageway to tank. The passageway has an orifice for each pressure chamber, and the actuator is configured to selectively block all or a portion of one or more of the orifices, depending on the position of the actuator. The components of the control system are configured such that the actuator will return to a neutral or near-neutral position upon loss of electric power.
Abstract translation: 公开了一种用于泵控制的电液控制系统。 液压致动器被配置成控制斜盘的倾斜度。 液压致动器的位置通过控制加压流体流入和流出两个压力室的控制，一个在致动器的两侧。 提供了一种流体通道，其选择性地将通道连接到罐。 通道具有用于每个压力室的孔口，并且致动器构造成根据致动器的位置选择性地阻挡一个或多个孔的全部或一部分。 控制系统的部件被构造成使得在电力损失时致动器将返回中立或近中性位置。
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Patent Agency Ranking
6.发明授权公开(公告)号：US08596057B2
公开(公告)日：2013-12-03
申请号：US12573949
申请日：2009-10-06
Applicant: Hongliu Du
Inventor： Hongliu Du
IPC: F15B13/044 , E02F9/22
CPC classification number: F04B49/14 , F15B11/20 , F15B13/08 , F15B2211/20553
Abstract: A control system for a variable displacement hydraulic pump is disclosed. The control system utilizes two flow control valves to provide a flow of hydraulic fluid to two control actuators. The control actuators create opposing moments on the pump swashplate to control swashplate orientation and pump displacement.
Abstract translation: 公开了一种用于可变排量液压泵的控制系统。 控制系统利用两个流量控制阀来向两个控制致动器提供液压流体流。 控制执行器在泵斜盘上产生相反的力矩，以控制斜盘方向和泵的位移。
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7.发明申请公开(公告)号：US20120152056A1
公开(公告)日：2012-06-21
申请号：US12973572
申请日：2010-12-20
Applicant: Hongliu Du , Tony L. Marcott
Inventor： Hongliu Du , Tony L. Marcott
CPC classification number: F16H47/04 , F16H41/28 , F16H61/448 , F16H2037/088 , F16H2200/2007 , Y10T29/49229 , Y10T74/19149 , Y10T74/19153
Abstract: A system for providing hydraulic power in a machine transmission includes a first hydraulic variator and a second hydraulic variator, each variator having a mechanical input to a hydraulic pump, and a hydraulic motor linked to the hydraulic pump via a hydraulic circuit, and a mechanical output from the hydraulic motor. In an embodiment, the first hydraulic circuit side of one variator is hydraulically connected to the first hydraulic side of the other variator, and the second hydraulic circuit sides are likewise linked together. A common input is geared to the inputs of the variators and a common output is geared to the outputs of the variators, tying the pump and motor of each variator to rotate at the same speed as the counterpart components of the other variator.
Abstract translation: 一种用于在机械变速器中提供液压动力的系统包括第一液压变速器和第二液压变速器，每个变速器具有到液压泵的机械输入，以及通过液压回路连接到液压泵的液压马达，以及机械输出 从液压马达。 在一个实施例中，一个变换器的第一液压回路侧液压连接到另一变换器的第一液压侧，并且第二液压回路侧同样连接在一起。 通用输入适用于变换器的输入，并且公共输出适用于变换器的输出，使每个变换器的泵和电机与其他变换器的对应部件以相同的速度旋转。
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8.发明申请公开(公告)号：US20110079006A1
公开(公告)日：2011-04-07
申请号：US12573949
申请日：2009-10-06
Applicant: Hongliu Du
Inventor： Hongliu Du
CPC classification number: F04B49/14 , F15B11/20 , F15B13/08 , F15B2211/20553
Abstract: A control system for a variable displacement hydraulic pump is disclosed. The control system utilizes two flow control valves to provide a flow of hydraulic fluid to two control actuators. The control actuators create opposing moments on the pump swashplate to control swashplate orientation and pump displacement.
Abstract translation: 公开了一种用于可变排量液压泵的控制系统。 控制系统利用两个流量控制阀来向两个控制致动器提供液压流体流。 控制执行器在泵斜盘上产生相反的力矩，以控制斜盘方向和泵的位移。
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公开(公告)号：US07204138B2
公开(公告)日：2007-04-17
申请号：US11369333
申请日：2006-03-07
Applicant: Hongliu Du
Inventor： Hongliu Du
IPC: G01M19/00
CPC classification number: F15B19/005
Abstract: A method and apparatus for determining the operating health of a hydraulic system are provided. The method may include the steps of determining a plurality of operating parameters of the hydraulic system during operation of the hydraulic system, determining an estimated working condition value of the hydraulic system, modifying the estimated working condition value as a function of the operating parameters, and determining the operating health of the hydraulic system as a function of the working condition value. In one method, the working condition value may be indicative of an effective bulk modulus value of an operating fluid within at least part of the hydraulic system.
Abstract translation: 提供了一种用于确定液压系统的运行健康的方法和装置。 该方法可以包括以下步骤：在液压系统的操作期间确定液压系统的多个操作参数，确定液压系统的估计工作状态值，修改作为操作参数的函数的估计工作状态值;以及 根据工作状态值确定液压系统的运行状况。 在一种方法中，工作条件值可以指示至少部分液压系统内的工作流体的有效体积模量值。
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公开(公告)号：US06848254B2
公开(公告)日：2005-02-01
申请号：US10610217
申请日：2003-06-30
Applicant: Hongliu Du
Inventor： Hongliu Du
CPC classification number: F03C1/0697 , F03C1/0686 , F04B2201/12051 , F04B2203/1202 , F04B2205/05 , F16D31/02
Abstract: A method and apparatus for controlling the motor output speed of a variable displacement hydraulic motor are disclosed. The method may include determining a value indicative of a motor output speed, determining a value indicative of a desired motor output speed, determining a desired position of a control valve using a nonlinear feedback control law, and, controlling the motor output speed as a function of the control valve position, wherein the nonlinear feedback control creates a first order system response.
Abstract translation: 公开了一种用于控制可变排量液压马达的马达输出速度的方法和装置。 该方法可以包括确定表示电动机输出速度的值，确定表示期望的电动机输出速度的值，使用非线性反馈控制律确定控制阀的期望位置，以及将电动机输出速度控制为一个功能 的控制阀位置，其中非线性反馈控制创建一阶系统响应。
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