| 摘要 |
<P>PROBLEM TO BE SOLVED: To enhance reliability of the entire system by monitoring fault of two rotation sensors on the engine side and motor side mutually. <P>SOLUTION: Difference ¾Δθ1¾ between the current value and the value before one processing period of sensor position of one rotation sensor is calculated (S1), and compared with a threshold A (S2). If ¾Δθ1¾>A, a decision is made that the one rotation sensor is faulty (S7). If ¾Δθ1¾≤A, difference ¾Δθ2¾ between the current value and the value before one processing period of corrected sensor position received from the other rotation sensor is calculated (S3), and compared with a threshold B (S4). If ¾Δθ2¾≤B, a decision is made that both rotation sensors are normal (S5). If ¾Δθ2¾>B, a decision is made that the other rotation sensor is faulty (S6). Fault of two rotation sensors on the engine side and motor side are monitored mutually, and reliability of the entire system can be enhanced. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
