Patent ID: 7072751

Claim:
A control device of an electric car including plurality of driving wheels, each having a drive motor fixed thereto, wherein the plurality of driving wheels are eight wheels, each having a drive motor fixed thereto, the control device comprising: a plurality of speed control devices, each fixed to the corresponding drive motor for accelerating or decelerating the corresponding driving wheel in accordance with an external electrical signal; and a main control device having functions of sending a control signal, to each of the speed control devices, for performing an acceleration or deceleration in accordance with a command from a driver or at least one of on-board sensors, and also receiving a control signal including information of an operating state of each of the drive motors and the speed control devices; and wherein the control device comprising fail safe means which outputs the control signal from the main control device to the driving motors, each disposed on the eight-wheel drive wheels, via transmission lines, alternative transmission lines, and a control-signal-use, alternative main transmission line.