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公开(公告)号：US20210139075A1
公开(公告)日：2021-05-13
申请号：US16679798
申请日：2019-11-11
发明人： Zhong Ren , Lodewijk Wijffels , Joshua Guerra , Scott J. Lauffer
摘要： A computer includes a processor and a memory, the memory storing instructions executable by the processor to detect an actual steering column torque and an actual steering wheel angle, predict a steering wheel torque with a state-estimation algorithm that outputs a plurality of vehicle states including the predicted steering wheel torque, adjust the plurality of vehicle states based on an algorithm noise that is based on a steering wheel angular speed to generate estimated vehicle states, output the estimated vehicle states including an estimated user-applied steering wheel torque, and transition from an autonomous mode to a manual mode when the estimated steering wheel torque exceeds a threshold. The state-estimation algorithm accepts input including the actual steering column torque and the actual steering wheel angle and outputs the plurality of vehicle states.
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公开(公告)号：US20210139007A1
公开(公告)日：2021-05-13
申请号：US16679417
申请日：2019-11-11
发明人： Lodewijk Wijffels , Joshua Guerra , Donald Bradfield , Ashrit Das , Bradford Fillion , William Gregory Suter
IPC分类号： B60T8/1755 , B60W40/114 , G05D1/08 , G05D1/02 , B60W10/18 , B60W10/20
摘要： A computer includes a processor and a memory, the memory storing instructions executable by the processor to input a current trajectory and a planned path for a vehicle to a state observer algorithm to obtain a target yaw rate, compare the target yaw rate to an actual yaw rate to determine one of an oversteer or an understeer condition, and apply brakes on one or more but less than all wheels of the vehicle based on determining the understeer or oversteer condition.
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公开(公告)号：US20180134310A1
公开(公告)日：2018-05-17
申请号：US15809394
申请日：2017-11-10
CPC分类号： B62D5/0481 , B62D1/28 , B62D5/008 , B62D6/00 , B62D6/08 , B62D6/10 , B62D15/021 , B62D15/025
摘要： A method for detecting steering misalignments in an adaptive steering system of a motor vehicle, wherein the adaptive steering system has a steering wheel angle sensor for detecting a value representative of a steering wheel angle, an adaptive angle unit for detecting a value representative of an adaptive angle, and a wheel angle detection unit for detecting a value representative of a wheel angle. The method including detecting a value representative of the steering wheel angle, detecting a value representative of the adaptive angle, detecting or determining a value representative of the wheel angle, and computing a comparison value.
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公开(公告)号：US20160200351A1
公开(公告)日：2016-07-14
申请号：US14596366
申请日：2015-01-14
CPC分类号： B62D5/046 , B62D5/008 , B62D5/0481
摘要： A vehicle includes an engine configured to auto stop and auto start. The vehicle includes an active front steering system with an electric actuator. A controller operates the electric actuator at a current limit that is less than a requested current of the electric actuator in response to a request to change a steering ratio by an amount that results in the requested current being greater than the current limit during an engine auto stop event. The current limit may decrease from the requested current to a predetermined limit after transitioning to the engine auto stop event. The current limit may increase from the predetermined limit to the requested current after transitioning from the engine auto stop event.
摘要翻译： 车辆包括被配置为自动停止和自动启动的引擎。 车辆包括具有电致动器的主动前转向系统。 控制器响应于将发动机自动变更导致所请求的电流大于电流限制的量的转向比的请求，将电动执行器的电流限制小于电动致动器的请求电流的电流限制 停止事件。 在转换到发动机自动停止事件之后，电流限制可能会从请求的电流减小到预定极限。 在从发动机自动停止事件转换之后，电流限制可以从预定限制增加到所请求的电流。
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公开(公告)号：US09183179B2
公开(公告)日：2015-11-10
申请号：US13959806
申请日：2013-08-06
IPC分类号： G06F7/00 , G01M17/00 , G06F11/30 , G06F19/00 , G07C5/00 , G06F17/00 , B60T8/1755 , B60T8/88 , B60G17/016 , B60G17/0195
CPC分类号： G06F17/00 , B60G17/0164 , B60G17/0195 , B60G2400/39 , B60G2600/07 , B60G2800/22 , B60G2800/94 , B60T8/1755 , B60T8/885 , B60T2260/06 , B60T2270/402
摘要： Stabilization method and system for performing dynamic chassis control in a vehicle. An electronic stability control (ESC) includes an ESC sensor set; at least one chassis actuator; and a dynamic controller operably connected to at the least one chassis actuator. The ESC sensor set generates one or more sensor fault signals. Then, the method employs a dynamic controller to evaluate the signals corresponding to the sensor fault at least after a first fast fault signal, or a second slow fault signal. If the first fast fault signal is detected, the dynamic controller generates a signal for at least one of partially or completely temporarily switching off the at least one chassis actuator, while maintaining ESC in an active state. Conversely, if the second slow fault signal is detected, the dynamic controller generates a signal for temporarily switching off the ESC.
摘要翻译： 用于在车辆中执行动态底盘控制的稳定方法和系统。 电子稳定控制（ESC）包括ESC传感器组; 至少一个底盘致动器; 以及可操作地连接到至少一个底盘致动器的动态控制器。 ESC传感器组产生一个或多个传感器故障信号。 然后，该方法至少在第一快速故障信号或第二慢故障信号之后采用动态控制器来评估与传感器故障相对应的信号。 如果检测到第一快速故障信号，则动态控制器在保持ESC处于活动状态的同时，产生部分或完全临时关闭至少一个底盘致动器的至少一个的信号。 相反，如果检测到第二慢故障信号，则动态控制器产生暂时关闭ESC的信号。
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6.发明授权公开(公告)号：US11926371B2
公开(公告)日：2024-03-12
申请号：US17204652
申请日：2021-03-17
发明人： Jeremy Rawlings , Robert Mrozek , Lodewijk Wijffels , Eugene Lau
CPC分类号： B62D5/006 , B62D1/10 , B62D6/008 , F16H1/16 , F16H57/039 , F16H2057/02034
摘要： Example steering wheel systems and torque feedback actuator assemblies for use in steer-by-wire vehicles are described herein. An example steering wheel system includes a steering wheel and a torque feedback actuator assembly. The torque feedback actuator assembly includes a housing and a helical gear rotatably disposed in the housing. The steering wheel is coupled to and coaxially aligned with the helical gear. The torque feedback actuator assembly also includes a motor with a worm gear engaged with the helical gear to provide torque feedback to the steering wheel by driving the helical gear.
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公开(公告)号：US20230266724A1
公开(公告)日：2023-08-24
申请号：US17675149
申请日：2022-02-18
发明人： Lodewijk Wijffels , Joshua Guerra , Taehyun Shim , Yijun Li
IPC分类号： G05B13/04
CPC分类号： G05B13/042
摘要： Upon determining calibration parameters for a single-loop controller that minimize a difference between an input to the single-loop controller and a response from the single-loop controller, calibration parameters for a cascade controller are determined based on the determined calibration parameters for the single-loop controller. The cascade controller includes a secondary controller and a primary controller. The calibration parameters for the cascade controller are provided to a second computer in a vehicle.
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8.发明申请公开(公告)号：US20190283796A1
公开(公告)日：2019-09-19
申请号：US15921224
申请日：2018-03-14
发明人： Jeremy Rawlings , Robert Mrozek , Lodewijk Wijffels , Eugene Lau
IPC分类号： B62D5/00 , B62D1/10 , B62D6/00 , F16H1/16 , F16H57/039
摘要： Example steering wheel systems and torque feedback actuator assemblies for use in steer-by-wire vehicles are described herein. An example steering wheel system includes a steering wheel and a torque feedback actuator assembly. The torque feedback actuator assembly includes a housing and a helical gear rotatably disposed in the housing. The steering wheel is coupled to and coaxially aligned with the helical gear. The torque feedback actuator assembly also includes a motor with a worm gear engaged with the helical gear to provide torque feedback to the steering wheel by driving the helical gear.
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公开(公告)号：US10315691B2
公开(公告)日：2019-06-11
申请号：US15474744
申请日：2017-03-30
发明人： Lodewijk Wijffels , David Michael Russell , Jeremy Alan Rawlings , Attila Benak , Timothy Cannon , Joseph Park
摘要： Methods, apparatus, and articles of manufacture to correct clear vision errors in a vehicle steering system are disclosed. An example apparatus includes a first sensor and a second sensor to measure a current position of a steering column and a current position of a steering wheel in a vehicle steering system. The example apparatus further includes a non-uniformity manager to map the current position to an offset, and an active steering system to apply the offset to adjust the current position of the steering wheel to a nominal position of the steering wheel to compensate for a clear vision error.
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公开(公告)号：US20170144627A1
公开(公告)日：2017-05-25
申请号：US14947527
申请日：2015-11-20
IPC分类号： B60R25/0215
CPC分类号： B60R25/02153
摘要： A system for a vehicle includes a gear and a plate fixed to the gear. The gear is driving by a motor for providing relative rotation between a steering wheel and steering shaft of the vehicle in an adaptive front steering system. The system includes a solenoid including a coil and a pin moveable relative to the coil to engage the plate based on a signal. A sensor is configured to detect a change in current through the coil associated with initial movement of the pin relative to the coil. The system includes a controller programmed to change the duty cycle signal in response to the change in current to slow movement of the pin to reduce or eliminate a clicking noise associated with the pin seating in an extended position or retracted position.
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