公开(公告)号：US20100131229A1

公开(公告)日：2010-05-27

申请号：US12276965

申请日：2008-11-24

申请人： Flavio Nardi ,  Jihan Ryu ,  Nikolai K. Moshchuk ,  Kevin A. O'Dea

发明人： Flavio Nardi ,  Jihan Ryu ,  Nikolai K. Moshchuk ,  Kevin A. O'Dea

IPC分类号： G01P3/00 ,  G06F15/00

CPC分类号： B60T8/172 ,  B60T2210/22 ,  B60T2230/02 ,  B60T2250/04

摘要： A system and method for estimating vehicle lateral velocity that defines a relationship between front and rear axle lateral forces and front and rear axle side-slip angles. The method includes providing measurements of vehicle yaw-rate, lateral acceleration, longitudinal speed, and steering angle. The method also includes using these measurements to provide a measurement of the front and rear axle forces. The method calculates a front axle lateral velocity and a rear axle lateral velocity, and calculates a front axle side-slip angle based on the rear axle lateral velocity and a rear axle side-slip angle based on the front axle lateral velocity. The method then estimates front and rear axle forces, and selects a virtual lateral velocity that minimizes an error between the estimated and measured lateral axle forces. The method then provides an estimated vehicle lateral velocity using the selected virtual lateral velocity.

摘要翻译： 一种用于估计车辆横向速度的系统和方法，其限定前后轴向力和前后轴侧滑角之间的关系。 该方法包括提供车辆偏航率，横向加速度，纵向速度和转向角的测量。 该方法还包括使用这些测量来提供前后轴力的测量。 该方法计算前桥横向速度和后桥横向速度，并根据前桥横向速度和基于前桥横向速度的后桥侧滑角计算前轴侧滑角。 然后，该方法估计前轴和后轴力，并且选择使估计和测量的横向轴力之间的误差最小化的虚拟横向速度。 该方法然后使用所选择的虚拟横向速度提供估计的车辆横向速度。

公开(公告)号：US08078351B2

公开(公告)日：2011-12-13

申请号：US12277027

申请日：2008-11-24

申请人： Flavio Nardi ,  Jihan Ryu ,  Nikolai K. Moshchuk ,  Kevin A. O'Dea

发明人： Flavio Nardi ,  Jihan Ryu ,  Nikolai K. Moshchuk ,  Kevin A. O'Dea

IPC分类号： G06F7/00

CPC分类号： B60T8/172 ,  B60T2210/12 ,  B60T2230/02

摘要： A system and method for estimating surface coefficient of friction in a vehicle system. The method includes providing a kinematics relationship between vehicle yaw-rate, vehicle speed, vehicle steering angle and vehicle front and rear axle side-slip angles that is accurate for all surface coefficient of frictions on which the vehicle may be traveling. The method defines a nonlinear function for the front and rear axle side-slip angles relating to front and rear lateral forces and coefficient of friction, and uses the nonlinear function in the kinematics relationship. The method also provides a linear relationship of the front and rear axle side-slip angles and the front and rear lateral forces using the kinematics relationship. The method determines that the vehicle dynamics have become nonlinear using the linear relationship and then estimates the surface coefficient of friction when the vehicle dynamics are nonlinear.

摘要翻译： 一种用于估计车辆系统中的摩擦力表面系数的系统和方法。 该方法包括提供车辆偏航率，车辆速度，车辆转向角度以及车辆前后侧滑角之间的运动学关系，其对于车辆可能在其上行驶的摩擦的所有表面系数是准确的。 该方法定义了与前后侧向力和摩擦系数有关的前轴和后桥侧滑角的非线性函数，并在运动学关系中使用非线性函数。 该方法还使用运动学关系提供前后轴侧滑角与前后侧向力的线性关系。 该方法通过线性关系确定车辆动力学变为非线性，然后估计当车辆动力学是非线性时的摩擦表面系数。

公开(公告)号：US20110125455A1

公开(公告)日：2011-05-26

申请号：US13018671

申请日：2011-02-01

申请人： Flavio Nardi ,  Jihan Ryu ,  Nikolai K. Moshchuk ,  Kevin A. O'Dea

发明人： Flavio Nardi ,  Jihan Ryu ,  Nikolai K. Moshchuk ,  Kevin A. O'Dea

IPC分类号： G06F15/00 ,  G01P3/00

CPC分类号： B60T8/172 ,  B60T2210/22 ,  B60T2230/02 ,  B60T2250/04

摘要： A system and method for estimating vehicle lateral velocity that defines a relationship between front and rear axle lateral forces and front and rear axle side-slip angles. The method includes providing measurements of vehicle yaw-rate, lateral acceleration, longitudinal speed, and steering angle. The method also includes using these measurements to provide a measurement of the front and rear axle forces. The method calculates a front axle lateral velocity and a rear axle lateral velocity, and calculates a front axle side-slip angle based on the rear axle lateral velocity and a rear axle side-slip angle based on the front axle lateral velocity. The method then estimates front and rear axle forces, and selects a virtual lateral velocity that minimizes an error between the estimated and measured lateral axle forces. The method then provides an estimated vehicle lateral velocity using the selected virtual lateral velocity.

摘要翻译： 一种用于估计车辆横向速度的系统和方法，其限定前后轴向力和前后轴侧滑角之间的关系。 该方法包括提供车辆偏航率，横向加速度，纵向速度和转向角的测量。 该方法还包括使用这些测量来提供前后轴力的测量。 该方法计算前桥横向速度和后桥横向速度，并根据前桥横向速度和基于前桥横向速度的后桥侧滑角计算前轴侧滑角。 然后，该方法估计前轴和后轴力，并且选择使估计和测量的横向轴力之间的误差最小化的虚拟横向速度。 该方法然后使用所选择的虚拟横向速度提供估计的车辆横向速度。

公开(公告)号：US20100131145A1

公开(公告)日：2010-05-27

申请号：US12276996

申请日：2008-11-24

申请人： Jihan Ryu ,  Flavio Nardi ,  Nikolai K. Moshchuk ,  Kevin A. O'Dea

发明人： Jihan Ryu ,  Flavio Nardi ,  Nikolai K. Moshchuk ,  Kevin A. O'Dea

IPC分类号： G06F17/00

CPC分类号： B60T8/172 ,  B60T2210/12 ,  B60T2230/02 ,  B60T2250/04

摘要： A system and method for estimating vehicle lateral velocity and surface coefficient of friction using front and rear axle lateral force versus side-slip angle tables and sensor measurements. The sensor measurements include lateral acceleration, yaw-rate, longitudinal speed and steering angle of the vehicle. The method includes calculating front and rear axle lateral forces and front and rear side-slip angles on the axles of the vehicle. The method also includes identifying two equations from the calculated lateral forces and the vehicle measurements. The method provides tables that identify a relationship between the calculated front and rear axle lateral forces and the front and rear side-slip angles, and determines the vehicle lateral velocity and surface coefficient of friction from the tables.

摘要翻译： 使用前桥和后桥横向力与侧滑角表和传感器测量值来估计车辆横向速度和表面摩擦系数的系统和方法。 传感器测量包括车辆的横向加速度，偏航速率，纵向速度和转向角。 该方法包括计算前桥和后桥侧向力以及车辆轴上的前后侧滑角。 该方法还包括从所计算的横向力和车辆测量中识别两个方程式。 该方法提供了表示计算出的前轴和后桥侧向力与前后侧滑角之间的关系的表格，并且确定车辆的横向速度和表面摩擦系数。

公开(公告)号：US08890747B2

公开(公告)日：2014-11-18

申请号：US12392277

申请日：2009-02-25

申请人： Flavio Nardi ,  Nikolai K. Moshchuk ,  Jihan Ryu ,  Kevin A. O'Dea

发明人： Flavio Nardi ,  Nikolai K. Moshchuk ,  Jihan Ryu ,  Kevin A. O'Dea

IPC分类号： G01S19/53 ,  B60T8/172 ,  G01S19/40 ,  G01S19/45 ,  G01S19/52

CPC分类号： B60T8/172 ,  B60T2210/36 ,  B60T2230/02 ,  G01S19/52 ,  G01S19/53

摘要： A system and method is provided for determining a lateral velocity and a longitudinal velocity of a vehicle equipped. The vehicle includes only one antenna for a GPS receiver and a magnetic compass. A magnitude of a velocity vector of the vehicle is determined. A course angle with respect to a fixed reference using the single antenna GPS receiver is determined. A yaw angle of the vehicle is measured with respect to the fixed reference using a magnetic compass. A side slip angle is calculated as a function of the course angle and the yaw angle. The lateral velocity and longitudinal velocity is determined as a function of the magnitude of the velocity vector and the side slip angle.

摘要翻译： 提供了一种用于确定装备的车辆的横向速度和纵向速度的系统和方法。 该车辆仅包括用于GPS接收器和磁罗盘的一个天线。 确定车辆的速度矢量的大小。 确定相对于使用单个天线GPS接收机的固定参考的航向角度。 使用磁罗经测量相对于固定基准的车辆的偏航角。 作为行程角和偏航角的函数计算侧滑角。 横向速度和纵向速度被确定为速度矢量和侧滑角的大小的函数。

公开(公告)号：US08050838B2

公开(公告)日：2011-11-01

申请号：US12276978

申请日：2008-11-24

申请人： Jihan Ryu ,  Flavio Nardi ,  Nikolai K. Moshchuk ,  Kevin A. O'Dea

发明人： Jihan Ryu ,  Flavio Nardi ,  Nikolai K. Moshchuk ,  Kevin A. O'Dea

IPC分类号： G01P3/00 ,  G05D1/08

CPC分类号： B60W40/103 ,  B60W2520/125 ,  B60W2520/14

摘要： A system and method for estimating vehicle lateral velocity. The method uses a kinematic estimator constructed as a closed-loop Leunberger observer. The kinematic estimator is based on a kinematic relationship between lateral acceleration measurement and rate of change of lateral velocity. The method provides measurement updates based on virtual lateral velocity measurements from front and rear axle lateral force versus axle side-slip angle tables using the lateral acceleration, yaw-rate, longitudinal speed, and steering angle measurements. The method calculates front and rear axle lateral forces from the lateral acceleration and yaw-rate measurements. The method estimates front and rear axle side-slip angles from the calculated front and rear axle lateral forces using the tables. The method calculates multiple virtual lateral velocities from the front and rear side-slip angles and selects one of the virtual lateral velocities that minimizes an error between a measured force and an estimated force as the lateral velocity.

摘要翻译： 一种用于估计车辆横向速度的系统和方法。 该方法使用构造为闭环Leunberger观测器的运动估计器。 运动学估计器是基于侧向加速度测量与横向速度变化率之间的运动学关系。 该方法使用横向加速度，偏航速率，纵向速度和转向角度测量，基于来自前轴和后桥侧向力与车轴侧滑角表的虚拟侧向速度测量提供测量更新。 该方法从横向加速度和偏航率测量值计算前后轴向力。 该方法从所计算的前轴和后桥侧向力使用表来估计前后轴侧滑角。 该方法从前后侧滑角计算多个虚拟侧向速度，并且选择将被测量的力和估计力之间的误差最小化的虚拟横向速度中的一个作为横向速度。

公开(公告)号：US08234090B2

公开(公告)日：2012-07-31

申请号：US13018671

申请日：2011-02-01

申请人： Flavio Nardi ,  Jihan Ryu ,  Nikolai K. Moshchuk ,  Kevin A. O'Dea

发明人： Flavio Nardi ,  Jihan Ryu ,  Nikolai K. Moshchuk ,  Kevin A. O'Dea

IPC分类号： G06F15/00

CPC分类号： B60T8/172 ,  B60T2210/22 ,  B60T2230/02 ,  B60T2250/04

摘要： A system and method for estimating vehicle lateral velocity that defines a relationship between front and rear axle lateral forces and front and rear axle side-slip angles. The method includes providing measurements of vehicle yaw-rate, lateral acceleration, longitudinal speed, and steering angle. The method also includes using these measurements to provide a measurement of the front and rear axle forces. The method calculates a front axle lateral velocity and a rear axle lateral velocity, and calculates a front axle side-slip angle based on the rear axle lateral velocity and a rear axle side-slip angle based on the front axle lateral velocity. The method then estimates front and rear axle forces, and selects a virtual lateral velocity that minimizes an error between the estimated and measured lateral axle forces. The method then provides an estimated vehicle lateral velocity using the selected virtual lateral velocity.

摘要翻译： 一种用于估计车辆横向速度的系统和方法，其限定前后轴向力和前后轴侧滑角之间的关系。 该方法包括提供车辆偏航率，横向加速度，纵向速度和转向角的测量。 该方法还包括使用这些测量来提供前后轴力的测量。 该方法计算前桥横向速度和后桥横向速度，并根据前桥横向速度和基于前桥横向速度的后桥侧滑角计算前轴侧滑角。 然后，该方法估计前轴和后轴力，并且选择使估计和测量的横向轴力之间的误差最小化的虚拟横向速度。 该方法然后使用所选择的虚拟横向速度提供估计的车辆横向速度。

公开(公告)号：US08086367B2

公开(公告)日：2011-12-27

申请号：US12276996

申请日：2008-11-24

申请人： Jihan Ryu ,  Flavio Nardi ,  Nikolai K. Moshchuk ,  Kevin A. O'Dea

发明人： Jihan Ryu ,  Flavio Nardi ,  Nikolai K. Moshchuk ,  Kevin A. O'Dea

IPC分类号： G06F7/00

CPC分类号： B60T8/172 ,  B60T2210/12 ,  B60T2230/02 ,  B60T2250/04

摘要： A system and method for estimating vehicle lateral velocity and surface coefficient of friction using front and rear axle lateral force versus side-slip angle tables and sensor measurements. The sensor measurements include lateral acceleration, yaw-rate, longitudinal speed and steering angle of the vehicle. The method includes calculating front and rear axle lateral forces and front and rear side-slip angles on the axles of the vehicle. The method also includes identifying two equations from the calculated lateral forces and the vehicle measurements. The method provides tables that identify a relationship between the calculated front and rear axle lateral forces and the front and rear side-slip angles, and determines the vehicle lateral velocity and surface coefficient of friction from the tables.

摘要翻译： 使用前桥和后桥横向力与侧滑角表和传感器测量值来估计车辆横向速度和表面摩擦系数的系统和方法。 传感器测量包括车辆的横向加速度，偏航速率，纵向速度和转向角。 该方法包括计算前桥和后桥侧向力以及车辆轴上的前后侧滑角。 该方法还包括从所计算的横向力和车辆测量中识别两个方程式。 该方法提供了表示计算出的前轴和后桥侧向力与前后侧滑角之间的关系的表格，并且确定车辆的横向速度和表面摩擦系数。

公开(公告)号：US07908112B2

公开(公告)日：2011-03-15

申请号：US12276965

申请日：2008-11-24

申请人： Flavio Nardi ,  Jihan Ryu ,  Nikolai K. Moshchuk ,  Kevin A. O'Dea

发明人： Flavio Nardi ,  Jihan Ryu ,  Nikolai K. Moshchuk ,  Kevin A. O'Dea

IPC分类号： G01P3/00

CPC分类号： B60T8/172 ,  B60T2210/22 ,  B60T2230/02 ,  B60T2250/04

摘要： A system and method for estimating vehicle lateral velocity that defines a relationship between front and rear axle lateral forces and front and rear axle side-slip angles. The method includes providing measurements of vehicle yaw-rate, lateral acceleration, longitudinal speed, and steering angle. The method also includes using these measurements to provide a measurement of the front and rear axle forces. The method calculates a front axle lateral velocity and a rear axle lateral velocity, and calculates a front axle side-slip angle based on the rear axle lateral velocity and a rear axle side-slip angle based on the front axle lateral velocity. The method then estimates front and rear axle forces, and selects a virtual lateral velocity that minimizes an error between the estimated and measured lateral axle forces. The method then provides an estimated vehicle lateral velocity using the selected virtual lateral velocity.

摘要翻译： 一种用于估计车辆横向速度的系统和方法，其限定前后轴向力和前后轴侧滑角之间的关系。 该方法包括提供车辆偏航率，横向加速度，纵向速度和转向角的测量。 该方法还包括使用这些测量来提供前后轴力的测量。 该方法计算前桥横向速度和后桥横向速度，并根据前桥横向速度和基于前桥横向速度的后桥侧滑角计算前轴侧滑角。 然后，该方法估计前轴和后轴力，并且选择使估计和测量的横向轴力之间的误差最小化的虚拟横向速度。 该方法然后使用所选择的虚拟横向速度提供估计的车辆横向速度。

公开(公告)号：US20100131154A1

公开(公告)日：2010-05-27

申请号：US12275880

申请日：2008-11-21

申请人： Nikolai K. Moshchuk ,  Flavio Nardi ,  Jihan Ryu ,  Kevin A. O'Dea

发明人： Nikolai K. Moshchuk ,  Flavio Nardi ,  Jihan Ryu ,  Kevin A. O'Dea

IPC分类号： G06F17/00 ,  G01L5/00 ,  G01P15/00

CPC分类号： B60G17/018 ,  B60G2400/252 ,  B60G2400/64 ,  B60G2600/60 ,  B60G2800/70

摘要： A method for estimating the normal force at a wheel of a vehicle and the vertical acceleration of the vehicle that has particular application for ride and stability control of the vehicle. The method includes obtaining a suspension displacement value from at least one of a plurality of suspension displacement sensors mounted on the vehicle and estimating a spring force acting on a spring of a suspension element of the vehicle, a damper force acting on a damper of the suspension element of the vehicle, and a force acting at a center of a wheel. The method further includes determining a normal force at the wheel of the vehicle and a vertical acceleration of the vehicle based on the spring force, the damper force and the force at the center of the wheel of the vehicle.

摘要翻译： 用于估计车辆的车轮处的法向力的方法以及具有用于车辆的骑行和稳定性控制的特定应用的车辆的垂直加速度。 该方法包括从安装在车辆上的多个悬架位移传感器中的至少一个获得悬架位移值，并且估计作用在车辆的悬挂元件的弹簧上的弹簧力，作用在悬架的阻尼器上的阻尼力 车辆的元件和作用在车轮中心的力。 该方法还包括基于弹簧力，阻尼力和在车辆的车轮中心处的力来确定车辆的车轮处的法向力和车辆的垂直加速度。