| 发明名称 |
Vehicle rollover detection system |
| 摘要 |
A rollover condition is detected responsive to the comparison of a figure of merit (FOM) with a threshold <MATH> wherein the threshold is given generally as a function of a period of time commencing with a time of inception determined from one or both of a measure of lateral acceleration (A'y) and a measure of angular velocity ( omega 'x). The measures of lateral acceleration (A'y) and angular velocity ( omega 'x) are filtered, and are compensated to remove offset errors. In one embodiment, the figure of merit (FOM) comprises a measure function (R) that incorporates a damping term (R(n<M>-1).(1- DELTA t<M>/ tau )) and a product term (F*.KE*.PE*). The product term comprises a force measure (F*) and a kinetic energy measure (KE*), wherein the force measure (F*) is responsive to the measure of lateral acceleration (A'y), and the kinetic energy measure (KE*) is responsive to the measure of angular velocity ( omega 'x). The product term may further comprise a potential energy measure (PE*) that is responsive to a measure of roll angle (&thetas;<M>). <IMAGE> |
| 申请公布号 |
EP1236620(A2) |
申请公布日期 |
2002.09.04 |
| 申请号 |
EP20020251442 |
申请日期 |
2002.03.01 |
| 申请人 |
AUTOMOTIVE SYSTEMS LABORATORY INC. |
发明人 |
WATSON, W. TODD;RIGGS, ALAN |
| 分类号 |
G01P15/00;B60K28/14;B60R21/00;B60R21/01;B60R21/0132;B60R21/16;B60R22/48 |
主分类号 |
G01P15/00 |
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