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Class 701/80 - Having coefficient of friction or road condition determining means


Subclass of Class 701 - Data processing: vehicles, navigation, and relative location
Definition: Brake pressure control wherein the control of the brake
No. of patents: 253
Last issue date: 03/27/2012


1              
NumberTitleIssue Date
8145402GPS-based traction control system and method using data transmitted between vehicles
System and method for controlling vehicle operating characteristics. The method includes receiving, at a vehicle, global positioning system (GPS) data, and, based on the received GPS data, determining the vehicle's location. The method also receives data from anothe...
03/27/2012
8121771Method and device of calculating aircraft braking friction and other relating landing performance parameters based on the data received from aircraft's on board flight data management system
This invention relates to a method and apparatus for the calculation of aircraft braking friction and other relating landing parameters, including but not limited to aircraft braking action, aircraft takeoff distance, aircraft landing distance, runway surface condit...
02/21/2012
8065067Systems and methods for determining a parameter relating a tire-to-road contact and/or a relation between a wheel and a vehicle motion
The present invention refers to systems and to methods for determining at least one parameter relating to a tire-to-road contact and/or a relation between a wheel and a vehicle motion. In particular, the present invention refers to systems and to methods for determi...
11/22/2011
8055424Real-time identification of maximum tire-road friction coefficient by induced wheels acceleration/deceleration
A method for estimating the maximum tire/road surface coefficient of friction for a vehicle that includes actively inducing a small amount of acceleration or deceleration to the front wheels or the rear wheels of the vehicle and inducing a corresponding and opposite...
11/08/2011
8050840Method and device of calculating aircraft braking friction and other relating landing performance parameters based on the data received from aircraft's on board flight data management system
This invention relates to a method and apparatus for the calculation of aircraft braking friction and other relating landing parameters, including but not limited to aircraft braking action, aircraft takeoff distance, aircraft landing distance, runway surface condit...
11/01/2011
8050839Vehicle behavior detection apparatus
A vehicle behavior detection apparatus can accurately detect an unstable state of a vehicle without making an incorrect determination even if a travel environment of the vehicle is abnormal. The apparatus includes a road surface reaction torque detecting unit that d...
11/01/2011
7991532Wheel control device and control device
The present invention provides a novel method for generating braking force in a wheel. In a vehicle having wheels, a wheel control device for controlling the wheels is provided with an actuator for performing an operation to vary a slip angle of the wheels, and a co...
08/02/2011
7957878Method and device of calculating aircraft braking friction and other relating landing performance parameters based on the data received from aircraft's on board flight data management system
This invention relates to a method and apparatus for the calculation of aircraft braking friction and other relating landing parameters, including but not limited to aircraft braking action, aircraft takeoff distance, aircraft landing distance, runway surface condit...
06/07/2011
7813860Brake force detecting device
A brake force detecting device for detecting strain in a caliper bracket. The brake force detecting device includes a sensor plate fixed to the outside surface of a brake load receiving portion of the caliper bracket in the circumferential direction of a brake disc ...
10/12/2010
7797095Method and device of calculating aircraft braking friction and other relating landing performance parameters based on the data received from aircraft's on board flight data management system
This invention relates to method and apparatus of the calculation of aircraft braking friction and other relating landing parameters including but not limited to aircraft braking action, aircraft takeoff distance, aircraft landing distance, runway surface conditions...
09/14/2010
7751961Acceleration/deceleration induced real-time identification of maximum tire-road friction coefficient
A method for classifying a road surface condition by estimating the maximum tire/road surface coefficient of friction and actively inducing acceleration or deceleration. In one embodiment, the induced acceleration/deceleration is provided by applying torque to the d...
07/06/2010
7734408Electric parking brake system and method for controlling the electric parking brake system
In an electric parking brake system including a tension control unit that controls the friction member pushing force in a brake by controlling the tension of a cable, the target tension is set to a larger value when a vehicle is maintained at a standstill on a downh...
06/08/2010
7729841Method and device for predicting the travelling trajectories of a motor vehicle
In a method and a device for predicting movement trajectories of a vehicle to prevent or reduce the consequences of an imminent collision, in which for predicting the movement trajectories, only those trajectories are considered for which, because of a combination o...
06/01/2010
7702446Road-surface friction coefficient estimating device and road-surface friction coefficient estimating method
A road surface μ is updated with time on the basis of a present value (an estimation value E) of the road surface μ estimated to estimate the road surface μ. In this case, if there is acquired road-surface information in a vehicle travel direction that is detecte...
04/20/2010
7680578Vehicle gradient analyzing apparatus
A system 10 for determining high accuracy gradient information includes linearization means 20, a sum unit 45, and state space model and observer means 50 for calculating a road gradient χRoad. The linearization means 20 includes ...
03/16/2010
7499786System and method for determining when to update a surface estimation value indicative of a condition of a roadway surface
A system and a method for determining when to update a surface estimation value indicative of a condition of a roadway surface are provided. The method includes determining a front axle cornering force error value based on a predicted front axle cornering force valu...
03/03/2009
7463964Driving force distribution and controlling apparatus for vehicle and driving force distribution and controlling method for vehicle
A driving force distribution and controlling apparatus and method for a vehicle is disclosed by which control interference which may occur between control by a driving force distribution mechanism and control by an antiskid brake system (ABS) is suppressed while the...
12/09/2008
7444224Lane departure prevention apparatus
A lane departure prevention apparatus is configured to conduct a course correction in a lane departure avoidance direction when the controller determines that there is a potential for a vehicle to depart from a driving lane. The lane departure prevention apparatus h...
10/28/2008
7444214Obstacle detection apparatus, method and medium
An obstacle detection apparatus and method which can detect the state of an obstacle according to a signal generated when the obstacle detection apparatus collides with the obstacle and a change in the posture of the obstacle detection apparatus caused due to the co...
10/28/2008
7398146Measurement of the maximum adhesion coefficient by measuring stress in a bead of a tire
A method of determining a friction coefficient μ in a contact area of a tire on a road. Fixed points are selected that lie at different azimuths along a circumference of at least one bead of the tire. A shear stress value is measured at each of the fixed points whi...
07/08/2008
7398145Wheel grip factor estimating apparatus and vehicle motion control apparatus
A grip factor estimating apparatus includes a steering torque detecting unit M1, and an assist torque detecting unit M2. When a self-aligning torque estimating unit M6 estimates self-aligning torque generated in front wheels on the basis of dete...
07/08/2008
7395138Driving assist system for vehicle
A driving assist system for vehicle comprises a state recognition device that detects vehicle conditions of a subject vehicle and a traveling environment for vehicle surroundings; a risk potential calculator that calculates a risk potential for vehicle surroundings ...
07/01/2008
7389170Method and apparatus for judging road surface conditions and program for judging road surface conditions
A method, apparatus and program for judging road surface conditions on which a vehicle is running. The method, apparatus and program includes the steps of: obtaining wheel speed rotational information of driving wheels of the vehicle during running from wheel speed ...
06/17/2008
7374006Method and device for determining the roadway condition
A method and a device for determining the condition of roadway surfaces includes transmitting electromagnetic radiation at at least two different frequencies in the GHz range, reflecting and/or scattering the electromagnetic radiation by the roadway surface and subs...
05/20/2008
7373236Vehicle control device and vehicle control method
Steering stability of a vehicle under a traveling state such as cornering is enhanced by controlling a state of the vehicle based on cornering powers of right and left wheels. A detecting unit 1 detects action force containing longitudinal force Fx, lateral f...
05/13/2008
7363116Method for determining the mass of a motor vehicle while taking into account different driving situations
A method for determining the mass of a motor vehicle while taking different driving situations into consideration, involving an evaluation of a vehicle acceleration, wherein apart from a driving force of a vehicle drive unit, resistance forces resulting from rotatio...
04/22/2008
7359787Stability control apparatus and load measuring instrument for wheel supporting rolling bearing unit
A stability control apparatus, includes: a grip detector that changes an output based on a grip force applied in a direction hindering a slippage of a wheel, acting on a contact face between the wheel supported by a wheel supporting rolling bearing unit and the road...
04/15/2008
7359786Control and power supply network for vehicle braking system
An electrically controlled braking system includes a first control unit and a second control unit in electrical communication via a communication link and a human machine-interface manipulatable by a vehicle operator. The human-machine interface includes a first sen...
04/15/2008
7352300Data compression systems and methods
Systems and methods for providing fast and efficient data compression using a combination of content independent data compression and content dependent data compression. In one aspect, a method for compressing data comprises the steps of: analyzing a data block of a...
04/01/2008
7349778Real-time vehicle dynamics estimation system
A real-time vehicle dynamics estimation system that employs a vehicle parameter estimator, a vehicle condition detector and a rich steering input detector for estimating vehicle understeer coefficient and front and rear cornering compliances in real time. The vehicl...
03/25/2008
7349775Motor vehicle state detecting system
System for detecting stability/instability of behavior of a motor vehicle upon occurrence of tire slip or lock. State of the motor vehicle is determined on the basis of an alignment torque (Ta) applied from a road and a side slip angle (β). By taking advantage of s...
03/25/2008
7338201Method of estimating the temperature of the air in the internal cavity of a tire and application to the detection of abnormal operating of a running-flat system
A method of estimating the temperature of the air in the internal cavity of a tire in which: prior to normal operation, a series of running tests are carried out on the tire provided with a means of measuring the internal air tempe...
03/04/2008
7328096Driving force switching control apparatus
A driving force switching control apparatus in a vehicle which runs by two-wheel drive or four-wheel drive in accordance with the running state. The apparatus includes a device for determining whether the vehicle runs at a constant speed; and a device for determinin...
02/05/2008
7315777Vehicle control method and vehicle control apparatus
A target resultant force to be applied to a vehicle body is calculated, the magnitude of a critical friction circle of each wheel is estimated, and a critical resultant force is estimated from the estimated magnitude of the critical friction circle. Subsequently, a ...
01/01/2008
7308350Method and apparatus for determining adaptive brake gain parameters for use in a safety system of an automotive vehicle
A control system for an automotive vehicle (10) and method for operating the same includes a controller (26) that is used to control the brake system in response to an adaptive brake gain coefficient. The adaptive brake gain coefficient may be used by ...
12/11/2007
7299693Method and apparatus for monitoring tire performance including slippage
A method and apparatus for assessing tire performance by generating accurate, timely tire-to-surface slippage information under any operational/environmental conditions and on any road and/or off-road surface without requiring instrumentation of the roadway. The app...
11/27/2007
7301445Tire maintenance system
A method of managing at least one vehicle includes sensing a tire operating characteristic of the at least one vehicle, sensing a vehicle operating characteristic of the at least one vehicle, and providing an output. The output is indicative of an expected tire life...
11/27/2007
7295103Integrated sensor system and method for a farm tire
An integrated tire monitoring system for an agricultural vehicle control system comprises at lease one sensor integrally coupled to at least one tire on a farm vehicle; an external reader for obtaining tire revolution speed data from the sensor during each revolutio...
11/13/2007
7286909Aircraft braking method and apparatus
An aircraft is decelerated by applying a braking force to a wheel of the aircraft as it moves along the ground. An anti skid controller calculates the braking force to be applied by taking into account data relating to the vertical load transmitted between the groun...
10/23/2007
7278316Rough road drive simulation and evaluation for vehicle control system
A rough road drive simulation apparatus for testing a vehicle motion control system includes a real-time simulator. The real time simulator simulates a rough road driving state by entering, into a vehicle model representing a vehicle equipped with the vehicle motion...
10/09/2007
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