| 摘要 |
PURPOSE:To reduce the externally emitting disturbance due to switching, by linking transmission lines between computers, operation through the giving/reception of data and judging whether the output deviation is within permissible value or not. CONSTITUTION:The control computer 10 and the waiting computer 20 are of the same constitution, and the both consists of operation sections 11, 21, input sections 12, 22, and output sections 13, 23. The same signal is fed to the input section of both the systems, required operation is executed, and either one of the control signals from the output section is output externally via the switching section 31. The computers 10, 20 are coupled with the transmission line 30, and this transmission line can transmit receive only data. The deviation of both the outputs at (n-1), n, n+1 times sampling of both the systems, is calculated, the maximum value of this deviation is taken as a permissible value, and if the permissible value is within the actual output deviation, the output of the waiting computer is rewirten. Thus, the externally emitting disturbance at switching is reduced. |
