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16 条记录 (耗时 0.012 秒)

    TIRE PRESSURE ESTIMATION
    2.
    发明公开
    TIRE PRESSURE ESTIMATION 有权
    轮胎压力估算值

    公开(公告)号：EP1641639A1

    公开(公告)日：2006-04-05

    申请号：EP03817396.9

    申请日：2003-07-07

    申请人： Nira Dynamics AB

    发明人： HALL, Peter ,  GUSTAVSSON, Tony ,  GUSTAVSSON, Fredrik ,  LINDSKOG, Peter ,  FORSSELL, Urban

    IPC分类号： B60C23/06

    CPC分类号： B60C23/062 ,  B60C23/061

    摘要： A method of estimating the occurrence of a specific tire pres­sure deviation between actual and nominal pressure values for one or a plurality of wheels (i) is provided. One or more wheel radius analysis measurement values (ΔR) are subsequently obtained from a wheel radius analysis component (104), wherein the wheel radius analysis measurement values (ΔR) are related to single wheel radius values (Δri) of which each is indicative of the wheel radius of a particular wheel (i). One or more wheel vibration data values (Δƒi) are subsequently obtained from a wheel vibration analysis component (102), wherein each of the wheel vibration data values (Δƒi) is indicative of a vibration phenomena in the time dependent behavior of the rotational velocity of a particular wheel (i). One or more tire pressure output values (ηi, Δpi) are calculated on the basis of both the wheel radius analysis measurement values (ΔR) and the wheel vibration data values (Δƒi) wherein each tire pressure output value (ηi, Δpi) is indicative of the specific tire pressure deviation for a particular wheel (i).

    METHOD, SYSTEM AND COMPUTER PROGRAM OF ISSUING A TIRE PRESSURE DEVIATION WARNING
    4.
    发明公开
    METHOD, SYSTEM AND COMPUTER PROGRAM OF ISSUING A TIRE PRESSURE DEVIATION WARNING 审中-公开
    方法，系统和计算机程序来进行轮胎压力警告豁免

    公开(公告)号：EP2137011A1

    公开(公告)日：2009-12-30

    申请号：EP07723345.0

    申请日：2007-03-16

    申请人： Nira Dynamics AB

    发明人： SVEDBERG, Martin ,  FORSSELL, Urban ,  LINDSKOG, Peter ,  STENMAN, Anders

    IPC分类号： B60C23/06

    CPC分类号： B60C23/061 ,  B60C23/062

    摘要： The invention is directed to a system, a method and a computer program including program code for carrying out the method, when executed on a processing system, of the tire low pressure warning of a vehicle. The system comprises an input unit (3) adapted to receive a vehicle signal. It further comprises a determination unit (2,4,5) adapted to determine a tire pressure signal (P) indicative of a tire pressure deviation in the vehicle's tire on the basis of the vehicle signal. Finally, it comprises a warning unit (10) adapted to issue a warning signal only after the tire pressure signal (P) has indicated a predetermined pressure deviation (ΔP0) for a minimum period of time (ΔTmin).

    ROAD FRICTION INDICATOR FOR ALL WHEEL DRIVE ROAD VEHICLES
    7.
    发明公开
    ROAD FRICTION INDICATOR FOR ALL WHEEL DRIVE ROAD VEHICLES 有权
    采用四轮驱动STRASSENREIBWERTANZEIGE车辆之路

    公开(公告)号：EP1558456A1

    公开(公告)日：2005-08-03

    申请号：EP03751701.8

    申请日：2003-10-15

    申请人： Nira Dynamics AB

    发明人： FORSSELL, Urban ,  GUSTAFSSON, Fredrik ,  STENMAN, Anders

    IPC分类号： B60K28/16 ,  B60K17/348

    CPC分类号： B60K17/3462 ,  B60K23/0808 ,  B60T8/172 ,  B60T2210/12 ,  B60W40/064 ,  B60W2520/26 ,  B60W2520/28 ,  B60W2550/148

    摘要： A system for determining friction between a surface and a tire of a driven wheel in a wheeled vehicle having a first and a second driven wheel, comprising the steps and functions of: - calculating slip values of a first and a second driven wheel dependent on the angular velocity of said first and second driven wheels; - calculating normalised traction forces of said first and second driven wheels dependent on the torque distribution between said first and second driven wheels; - calculating a friction estimate θf, θr for each of said first and second driven wheels dependent on a predetermined relation between said calculated slip and said calculated normalised traction forces. The friction estimation system combined with a transmission coupling having a variable torque distribution.

    METHOD, SYSTEM AND COMPUTER PROGRAM FOR ESTIMATION OF THE PRESSURE
    8.
    发明授权
    METHOD, SYSTEM AND COMPUTER PROGRAM FOR ESTIMATION OF THE PRESSURE 有权

    公开(公告)号：EP2137013B1

    公开(公告)日：2018-05-30

    申请号：EP07723347.6

    申请日：2007-03-16

    申请人： Nira Dynamics AB

    发明人： GUSTAVSSON, Fredrik ,  STENMAN, Anders ,  GUSTAVSSON, Tony ,  LINDSKOG, Peter ,  HALL, Peter ,  FORSSELL, Urban

    IPC分类号： B60C23/06

    CPC分类号： B60C23/061 ,  B60C23/062

    摘要： The invention is directed to a system, a method and a computer program including program code for carrying out the method, when executed on a processing system, of estimating a tire pressure deviation of a vehicle's tire (2). The system includes an input section (100) adapted to receive as an input signal a vehicle signal, a calculation section (200) adapted to calculate at least one shape factor of a resonance peak associated with the vehicle signal spectrum (2) on the basis of the input signal, and a determination section (300) adapted to derive, depending on said at least one shape factor, a tire pressure signal indicative of a tire pressure deviation within the vehicle's tire (2).