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公开(公告)号：US11235799B2
公开(公告)日：2022-02-01
申请号：US16385425
申请日：2019-04-16
IPC分类号： B62D5/04
摘要： Systems and methods are provided for limit cycle detection and cessation. A control system generates a drive signal with at least one drive component. An actuator effects a response to the drive signal and a sensor measures the response. Characteristics of the drive signal and of the drive components are accessed by a controller. The characteristics are compared to a predetermined set of characteristics. When the characteristics fall within the predetermined set of characteristics, a magnitude of at least one of the characteristics is evaluated. When the magnitude exceeds a predetermined value indicative of the limit cycle, an action is undertaken to stop the limit cycle.
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公开(公告)号：US20180252618A1
公开(公告)日：2018-09-06
申请号：US15446577
申请日：2017-03-01
IPC分类号： G01M17/007 , G01M7/02 , B24B5/36
CPC分类号： G01M17/007 , B24B5/366 , G01M7/02 , G01M7/022
摘要： A method for testing a vehicle includes designing a tire that has a runout as a function of an angular position of the tire that induces a desired vibration in a vehicle when the tire operates on the vehicle. The method also includes performing a test on the vehicle while operating the vehicle with the tire having the design that induces a desired vibration in a vehicle.
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公开(公告)号：US09354137B2
公开(公告)日：2016-05-31
申请号：US14166356
申请日：2014-01-28
发明人： Jinshuo Zhu , Kenneth L. Oblizajek , Christopher A. Stirlen , John D. Sopoci , Zachary M. Shehabi
CPC分类号： G01M7/02 , B60C99/006 , B60C2019/004 , G01M7/08 , G01M17/02 , G01M17/025
摘要： Methods and systems are provided for determining frequencies associated with tire crown bending. The system includes a vibration generating device configured to excite vibrations through a tire. The system further includes a vibration sensing arrangement configured to sense vibrations at a plurality of sensing points on the tire. A computer is in communication with the vibration sensing arrangement and configured to determine a first frequency associated with bending of the crown of the tire based at least partially on phase differences between the sensed vibrations at the plurality of points on the tire.
摘要翻译： 提供了用于确定与轮胎冠部弯曲相关联的频率的方法和系统。 该系统包括被配置为通过轮胎激励振动的振动产生装置。 该系统还包括被配置为感测轮胎上的多个感测点处的振动的振动感测装置。 计算机与振动检测装置通信，并且被配置为至少部分地基于轮胎上的多个点处感测到的振动之间的相位差来确定与轮胎冠部的弯曲有关的第一频率。
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4.发明授权公开(公告)号：US09126478B2
公开(公告)日：2015-09-08
申请号：US13903754
申请日：2013-05-28
发明人： Ping Lee , John D. Sopoci
CPC分类号： B60K5/1283 , F16F15/002
摘要： Methods and systems are provided for controlling an active vibration system. In one embodiment, a method of controlling an active vibration system associated with an engine is provided. The method includes: receiving engine parameters indicating one or more engine operating conditions; determining an operating mode of the active vibration system to be at least one of a sensing mode and a force generation mode based on the engine parameters; and selectively controlling the active vibration system based on the operating mode.
摘要翻译： 提供了用于控制主动振动系统的方法和系统。 在一个实施例中，提供了一种控制与发动机相关联的主动振动系统的方法。 该方法包括：接收指示一个或多个发动机操作条件的发动机参数; 基于所述发动机参数，将所述主动振动系统的操作模式确定为感测模式和力产生模式中的至少一个; 并且基于操作模式选择性地控制主动振动系统。
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公开(公告)号：US11326664B2
公开(公告)日：2022-05-10
申请号：US16434372
申请日：2019-06-07
摘要： A method for reshaping an electric drive signal of a real-time damper in a sprung mass system includes detecting a periodic frequency and magnitude of a target periodic vibration of a sprung mass. The periodic vibration has velocity and elasticity components that are 90 degrees out-of-phase. An electric drive signal to the real-time damper is reshaped by a controller depending on polarity of the velocity component to thereby generate a composite drive signal. The damper is energized using the composite drive signal to modify a damper force. Reshaping the electric drive signal includes injecting a force and/or an intermittent drive suppression component onto the electric drive signal based on the frequency and magnitude. The sprung mass system may have a frame and body, motion and wheel speed sensors, the real-time dampers, road wheels, and a controller programmed to perform the method.
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公开(公告)号：US09150245B2
公开(公告)日：2015-10-06
申请号：US13747048
申请日：2013-01-22
CPC分类号： B62D15/025 , B62D6/00 , G01S19/13
摘要： Methods and systems are provided for controlling a steering system of a vehicle is provided. A detection unit is configured to obtain one or more of the following values: a compass heading, a global positioning system (GPS) heading, a yaw velocity, and a difference in tire angular velocities. A processor is coupled to the detection unit, and is configured to determine whether a vehicle is on a straight line path using one or more of the compass heading, the GPS heading, the yaw velocity, and the difference in tire angular velocities, activate the steering system if it is determined that the vehicle is on a straight line path, and disable the feature of the steering system if it is determined that the vehicle is not on a straight line path.
摘要翻译： 提供了用于控制车辆的转向系统的方法和系统。 检测单元被配置为获得以下值中的一个或多个：罗盘航向，全球定位系统（GPS）航向，偏航速度和轮胎角速度差。 处理器耦合到检测单元，并且被配置为使用一个或多个罗盘航向，GPS航向，偏航速度和轮胎角速度差来确定车辆是否在直线路径上，激活 如果确定车辆处于直线路径上，并且如果确定车辆不在直线路径上则禁用转向系统的特征。
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公开(公告)号：US20200331521A1
公开(公告)日：2020-10-22
申请号：US16385425
申请日：2019-04-16
IPC分类号： B62D5/04
摘要： Systems and methods are provided for limit cycle detection and cessation. A control system generates a drive signal with at least one drive component. An actuator effects a response to the drive signal and a sensor measures the response. Characteristics of the drive signal and of the drive components are accessed by a controller. The characteristics are compared to a predetermined set of characteristics. When the characteristics fall within the predetermined set of characteristics, a magnitude of at least one of the characteristics is evaluated. When the magnitude exceeds a predetermined value indicative of the limit cycle, an action is undertaken to stop the limit cycle.
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公开(公告)号：US10407093B2
公开(公告)日：2019-09-10
申请号：US15674063
申请日：2017-08-10
摘要： An electric power steering (EPS) system and methods to attenuate disturbances at the steering wheel by providing a feed forward motor drive input. The EPS includes an electric motor configured to provide a motor drive output responsive to a motor drive input, and an electronic control unit (ECU) being configured to provide the motor drive input, with at least one motor drive component of the motor drive input including compensatory periodic disturbance data. The ECU is further configured to provide disturbance attenuation with the at least one motor drive component from a road wheel signal and vibratory characteristics of a disturbance signal affecting the steering system.
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公开(公告)号：US09885638B2
公开(公告)日：2018-02-06
申请号：US14690654
申请日：2015-04-20
发明人： Kenneth L. Oblizajek , John D. Sopoci , Ian Y. Hwa
IPC分类号： G01M17/06
CPC分类号： G01M17/06
摘要： Methods and apparatus are provided for determining steering performance. The method includes coupling at least one load source to the steering system, and coupling a portion of the steering system to an angle input source. The method also includes outputting one or more control signals by a processor to the at least one load source to apply a load to the steering system and outputting one or more control signals by the processor to the angle input source to apply an input to the steering system. The method includes receiving torque data indicating a performance of the steering system based on the load applied to the steering system by the at least one load source and the input applied by the angle input source.
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公开(公告)号：US10337961B2
公开(公告)日：2019-07-02
申请号：US15499016
申请日：2017-04-27
IPC分类号： G01M17/02
摘要： A method of controlling a assembly includes measuring a first amplitude of a selected harmonic order of the radial force variation of the assembly, and locating a first angular location of the selected order of the radial force variation of the assembly. A second angular location of a tire is located, which indicates a phase of the selected order of a radial force variation of the tire, having a second amplitude. A third angular location of a wheel is located, which indicates a phase of the selected order of a runout value of the wheel, and has a third amplitude. A remaining force metric may be calculated using the pairs of the first amplitude and the first angular location, the second amplitude and the second angular location, and the third amplitude and the third angular location.
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