| 摘要 |
PURPOSE:To exactly and easily calculate reliability and property values by summing up the fault rates of respective constituting parts coincident with a user condition and calculating the reliability and property values from the standard fault rates of the constituting parts. CONSTITUTION:When the respective constituting parts of a multiple part device are designated from the operation part of an input/output device 2, the standard faults rates of those constituting parts are read out from a parts file 5 by a standard fault rate read-out part. When the use condition for the parts is not standard, a fault rate calculation part 10 is operated by designating the use condition in the operation part and the fault rate is corrected to the fault rate under the condition of use by using a correction value stored in a condition file 9. The fault rates of the respective constituting parts are summed up by a fault rate sum-up part 11 and the fault rate of the device is calculated. Further, the reliability and property values are calculated by an inverse calculation part 12. Thus, the reliability and property values are calculated exactly and easily. |
