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1.发明授权Torque and speed control in a machine with continuously variable transmission 有权具有无级变速器的机器中的转矩和速度控制公开(公告)号：US09002595B2
公开(公告)日：2015-04-07
申请号：US13666527
申请日：2012-11-01
Applicant: Caterpillar Inc.
Inventor： Kevin Davis , Adam Nackers , Michael Barngrover , Brian D. Kuras
IPC: F16H61/66 , F16H61/472 , B60W10/101 , B60W10/103 , B60W30/188 , F16H47/04
CPC classification number: B60W30/1882 , B60W10/103 , B60W2710/1038 , B60W2710/105 , B60Y2200/411 , F16H47/04 , Y10T477/60 , Y10T477/619
Abstract: A method regulates the torque output and/or speed output of a continuously variable transmission (CVT) in a manner that may simulate a clutch. The CVT may be incorporated in a machine and maybe operatively coupled to a power source and to a propulsion device. The method utilizes an unaltered torque-to-speed curve that relates the torque output to the speed output of the CVT. The method may receive an operator input signal indicating a desire to change operation of the machine. The torque-to-speed curve may be shifted in response to the operator input signal to limit the torque output available. In an aspect, an under-run curve may be applied to the torque-to-speed curve, the under-run curve corresponding to a target speed. The operator input signal may also shift the under-run curve to reduce the target speed.
Abstract translation: 一种方法以可模拟离合器的方式调节无级变速器（CVT）的扭矩输出和/或速度输出。 CVT可以结合在机器中并且可以可操作地耦合到电源和推进装置。 该方法利用将转矩输出与CVT的速度输出相关联的未改变的转矩 - 转速曲线。 该方法可以接收指示改变机器操作的期望的操作者输入信号。 扭矩到速度曲线可以响应于操作者输入信号而偏移以限制可用的扭矩输出。 在一个方面，运行中的曲线可以应用于转矩 - 速度曲线，对应于目标速度的欠运行曲线。 操作员输入信号也可以移动欠运行曲线以降低目标速度。
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公开(公告)号：US20200262403A1
公开(公告)日：2020-08-20
申请号：US16278593
申请日：2019-02-18
Applicant: Caterpillar Inc.
Inventor： Brian D. Kuras , Ankit Sharma , Jeremy Peterson
Abstract: A work machine with a mechanical brake touch-up system includes a power source that provides power to a rotational element. The work machine includes a brake that is configured with a piston to selectively engage a frictional element rotationally coupled to the rotational element, a position sensor for generating a position signal of the piston, and a control valve configured to supply hydraulic pressure to the piston to selectively apply a retarding torque to the frictional element, a speed sensor for generating a rotational speed signal. The work machine includes a touch-up controller which is configured to detect a retarding condition of the work machine based on the speed signal, and, upon detection of a retarding condition, control the position of the piston to a touch-up position between an engaged and retracted position.
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公开(公告)号：US09181682B2
公开(公告)日：2015-11-10
申请号：US13868790
申请日：2013-04-23
Applicant: Caterpillar Inc.
Inventor： Jonathan W. Anders , Brian D. Kuras , Adam M. Nackers , Christopher P. Braet
CPC classification number: E02F9/2058 , E02F9/123 , E02F9/2095 , E02F9/2253 , G05B11/42 , G05B13/02
Abstract: A system and method are provided for controlling a movable element in accordance with a speed command. The movable element, which may be an excavator swing platform, is moved via an actuator that is driven in accordance with a torque command. The speed of the movable element is sensed, and a torque command is generated via PID control based on the speed command and the sensed speed. The PID control uses a set of gains including a P-gain, an I-gain, and a D-gain. At least one of these gains is set based on a counter, and the counter is set, cleared, incremented, or decremented based on one or more of the speed command, the torque command and the sensed speed. In this way, the movable element responds aggressively to operator input, but stability is maintained.
Abstract translation: 提供了一种用于根据速度指令控制可移动元件的系统和方法。 可移动元件（其可以是挖掘机摆动平台）通过根据扭矩指令驱动的致动器移动。 感测到可动元件的速度，并通过基于速度指令和检测速度的PID控制产生转矩指令。 PID控制使用一组增益，包括P增益，I增益和D增益。 这些增益中的至少一个基于计数器设置，并且基于速度命令，转矩命令和感测速度中的一个或多个来设置，清除，递增或递减计数器。 以这种方式，可移动元件对操作者输入进行积极的响应，但是保持稳定性。
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Patent Agency Ranking
公开(公告)号：US20190160965A1
公开(公告)日：2019-05-30
申请号：US15827272
申请日：2017-11-30
Applicant: Caterpillar Inc.
Inventor： Brian D. Kuras , Sangameshwar Sonth , Arkit Sharma
Abstract: A control system for controlling operation of a drive motor includes an input device for providing a command signal that is indicative of a desired speed and direction of rotation of the drive motor. A sensor is associated with the drive motor and adapted to provide a sensor signal indicative of current rotational speed of the drive motor. A controller receives the command signal, and determine whether the command signal is indicative of a desired zero speed to be associated with the drive motor. The controller also receives the sensor signal, and determine whether the current rotational speed of the drive motor is within a pre-defined range of difference from the desired zero speed. The controller then generates a de-rated torque command signal having a reduced gain factor, and reduce the current rotational speed of the drive motor based on the de-rated torque command signal.
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公开(公告)号：US11358576B2
公开(公告)日：2022-06-14
申请号：US16664064
申请日：2019-10-25
Applicant: Caterpillar Inc.
Inventor： Brian D. Kuras , Ankit Sharma , Lance M. Cowper
Abstract: A braking system is disclosed. The braking system may include a controller configured to determine a power limit for one or more brakes of a machine based on a temperature of the one or more brakes during engagement of the one or more brakes according to a commanded power. The power limit may be a power at which the temperature of the one or more brakes ceases to increase. The controller may be configured to determine a speed adjustment for the machine based on the power limit and the commanded power, and cause adjustment to a speed of the machine based on the determined speed adjustment.
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公开(公告)号：US20170351230A1
公开(公告)日：2017-12-07
申请号：US15172224
申请日：2016-06-03
Applicant: Caterpillar Inc.
Inventor： Brian D. Kuras , Michael J. Barngrover , Sangameshwar Sonth
CPC classification number: H03K3/0377
Abstract: A control system for a machine having at least one control element is disclosed. The control system includes multiple input sensors in communication with the control element. The input sensor generates an input signal based on an input to the control element. The control system includes multiple actuating members to control operations of the machine. The control system includes a controller in communication with the input sensors and the actuating members. The controller receives the input signal from the input sensor and determines an imposed hysteresis level corresponding to the input signal based on a hysteresis input function. The controller is further configured to generate a hysteresis conditioned input signal based on the imposed hysteresis level.
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公开(公告)号：US20140316664A1
公开(公告)日：2014-10-23
申请号：US13868790
申请日：2013-04-23
Applicant: CATERPILLAR INC.
Inventor： Jonathan W. Anders , Brian D. Kuras , Adam M. Nackers , Christopher P. Braet
CPC classification number: E02F9/2058 , E02F9/123 , E02F9/2095 , E02F9/2253 , G05B11/42 , G05B13/02
Abstract: A system and method are provided for controlling a movable element in accordance with a speed command. The movable element, which may be an excavator swing platform, is moved via an actuator that is driven in accordance with a torque command. The speed of the movable element is sensed, and a torque command is generated via PID control based on the speed command and the sensed speed. The PID control uses a set of gains including a P-gain, an I-gain, and a D-gain. At least one of these gains is set based on a counter, and the counter is set, cleared, incremented, or decremented based on one or more of the speed command, the torque command and the sensed speed. In this way, the movable element responds aggressively to operator input, but stability is maintained.
Abstract translation: 提供了一种用于根据速度指令控制可移动元件的系统和方法。 可移动元件（其可以是挖掘机摆动平台）通过根据扭矩指令驱动的致动器移动。 感测到可动元件的速度，并通过基于速度指令和检测速度的PID控制产生转矩指令。 PID控制使用一组增益，包括P增益，I增益和D增益。 这些增益中的至少一个基于计数器设置，并且基于速度命令，转矩命令和感测速度中的一个或多个来设置，清除，递增或递减计数器。 以这种方式，可移动元件对操作者输入进行积极的响应，但是保持稳定性。
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公开(公告)号：US10404239B2
公开(公告)日：2019-09-03
申请号：US15172224
申请日：2016-06-03
Applicant: Caterpillar Inc.
Inventor： Brian D. Kuras , Michael J. Barngrover , Sangameshwar Sonth
IPC: H03K3/037
Abstract: A control system for a machine having at least one control element is disclosed. The control system includes multiple input sensors in communication with the control element. The input sensor generates an input signal based on an input to the control element. The control system includes multiple actuating members to control operations of the machine. The control system includes a controller in communication with the input sensors and the actuating members. The controller receives the input signal from the input sensor and determines an imposed hysteresis level corresponding to the input signal based on a hysteresis input function. The controller is further configured to generate a hysteresis conditioned input signal based on the imposed hysteresis level.
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