Patent ID: 8447418

Claim:
A control system which controls a plurality of driven members, drivable by a driving method, to drive the driven members by the driving method, comprising: a plurality of regular electronic control units that control the respective driven members; and a backup electronic control unit that controls each driven member instead of the regular electronic control unit controlling the driven member in response to a failure state occurring in the regular electronic control unit, each of the regular electronic control units comprising: a regular driver that supplies a driving output based on the driving method to the corresponding driven member to drive the driven member; a failure judging block that judges whether or not the regular electronic control unit is in a failure state such that the regular driver fails in supplying the driving output to the corresponding driven member, and sets failure information, indicating a failure state occurring in the regular electronic control unit, when the regular electronic control unit is in the failure state; and a failure information outputting block that outputs the failure information, the backup electronic control unit comprising: an output driver that can produce a driving output based on the driving method so as to drive any of the driven members receiving the driving output; an output changing block that can select any of the driven members to output the driving output of the output driver to the selected driven member; an information receiving block that can receive the failure information from the failure information outputting block of any of the regular electronic control units; and a driving output control block that, in response to the failure information outputted from the failure information outputting block of one regular electronic control unit and received in the information receiving block, controls the output driver to produce the driving output, and controls the output changing block to select the driven member corresponding to the regular electronic control unit and to output the driving output of the output driver to the selected driven member.