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    • 7. 发明申请
    • METHOD AND DEVICE FOR DETERMINING MULTIPLICATIVE FAULTS OF A SENSOR INSTALLED IN A SYSTEM COMPRISING A PLURALITY OF SENSORS
    • 用于确定安装在包含多个传感器的系统中的传感器的多项式故障的方法和装置
    • WO2015083027A1
    • 2015-06-11
    • PCT/IB2014/066190
    • 2014-11-20
    • E-SHOCK S.R.L.POLITECNICO DI MILANOUNIVERSITA' DEGLI STUDI DI BERGAMO
    • BOTTELLI, StefanoSAVARESI, Sergio MatteoSPELTA, CristianoDELVECCHIO, DiegoBONIOLO, Ivo
    • B60G17/018B60G17/0185
    • B60G17/0185B60G17/0182B60G2300/12B60G2400/106B60G2400/25B60G2400/252B60G2401/25B60G2500/106B60G2600/08B60G2600/084B60G2600/1871B60G2600/82B62K2025/044G07C5/0808
    • A method is described for determining multiplicative faults of a sensor installed in a system comprising a plurality of sensors, comprising the steps of: - detecting an effective target signal (s) from a target sensor, representative of a target quantity of the system; - detecting one or more auxiliary signals respectively from one or more auxiliary sensors of the system besides the target sensor, representative of auxiliary quantities of the system; - determining an estimated target signal (s*) representative of the target quantity from the one or more auxiliary signals; - determining a first quadratic difference (r+) between the effective target signal (s) multiplied by a multiplicative positive factor (c+) greater than 1, and the estimated target signal (s*); - determining a second quadratic difference (r) between the effective target signal (s) and estimated target signal (s*); - determining a third quadratic difference (r-) between the effective target signal (s) multiplied by a positive multiplicative factor (c-) smaller than 1, and the estimated target signal (s*); - determining a first ratio (r/r+) between the second (r) and first quadratic differences (r+); - determining a second ratio (r/r-) between the second (r) and third quadratic differences (r-); - comparing the first (r/r+) and second ratios (r/r-) with a first comparison factor (Kf); - determining the square of the effective target signal (s); - determining the square of the estimated target signal (s*); - comparing the square of the effective target signal (s) and square of estimated target signal (s*) with a second comparison factor (Ke); - establishing the presence of multiplicative faults of target sensor if at least one between the first (r/r+) and second ratios (r/r-) is greater than the first comparison factor (Kf), and at least one between the square of the effective target signal (s) and square of the estimated target signal (s*) is greater than said second comparison factor (Ke).
    • 描述了一种用于确定安装在包括多个传感器的系统中的传感器的乘法故障的方法,包括以下步骤: - 检测来自目标传感器的有效目标信号,代表系统的目标量; - 除了所述目标传感器之外,分别从所述系统的一个或多个辅助传感器检测一个或多个辅助信号,代表所述系统的辅助量; - 从所述一个或多个辅助信号确定代表所述目标量的估计目标信号(s *); - 确定有效目标信号乘以大于1的乘法正因子(c +)与估计的目标信号(s *)之间的第一二次差(r +); - 确定有效目标信号和估计的目标信号(s *)之间的第二二次方差(r); - 确定有效目标信号乘以小于1的正乘乘因子(c-)与估计的目标信号(s *)之间的第三二次差(r-); - 确定第二(r)和第一二次差(r +)之间的第一比率(r / r +); - 确定第二(r)和第三二次方差(r-)之间的第二比率(r / r-); - 将第一(r / r +)和第二比(r / r-)与第一比较因子(Kf)进行比较; - 确定有效目标信号的平方; - 确定估计目标信号的平方(s *); - 将有效目标信号的平方和估计的目标信号(s *)的平方与第二比较因子(Ke)进行比较; - 如果第一(r / r +)和第二比率(r / r-)之间的至少一个大于第一比较因子(Kf),则建立目标传感器的乘法故障的存在,并且至少一个在 所估计的目标信号(s *)的有效目标信号和平方大于所述第二比较因子(Ke)。