Redundant backup circuit system architecture method with high security

The invention provides a redundant backup circuit system architecture method with high security, which relates to the technical field of automatic control. Two sets of same circuit systems are provided, each set of system only provides half driving capability and is in a light load condition for a long time, the redundant driving capability is provided in an emergency of occurrence of a fault, and one set of system bears all driving force requirements; even one of the circuit systems has the most serious fault, the other system can sense the emergency condition in time and still can effectively control the operation of the whole equipment, thereby securely stopping the equipment in the controllable range in a short time for waiting for maintenance; and in the short time, because the possibility that the second circuit system has a fault is very small, the serious result of losing control of the equipment caused by simultaneous failure of the two circuit systems can be nearly eliminated.