| 摘要 |
PROBLEM TO BE SOLVED: To detect a malfunction of a control system provided with a CPU not by another CPU but by itself, and to automatically continue control of a device by an auxiliary control system when the malfunctioning control system stops. SOLUTION: First and second control systems A and B are each provided with driver circuits 2A and 2B, CPUs 1A and 1B controlling the driver circuits 2A and 2B, a power source 4 for driving, switching circuits 5A and 5B, and CPU malfunction detesting mechanism 3A and 3B. When a malfunction signal is outputted from the CPU 1A inside one control system A, the CPU malfunction detecting mechanism 3A output a command to the switching circuit 5A to shut off a switch, the control system A sends a control stoppage signal to the other control system B, and the CPU 1B of the control system B starts drive control. |
