Vehicle control system, motor drive controller, and management controller

A vehicle control system comprising:

• electronic controllers to control a vehicle including an internal combustion engine and a drive motor to move the vehicle, the electronic controllers including a management controller to manage travel control of the vehicle and a motor drive controller to control the drive motor;
• a first communications network which connects the electronic controllers together and via which the electronic controllers communicate;
• a second communications network which connects the electronic controllers together and via which the electronic controllers communicate;
• each of the electronic controllers configured to detect a fault in the first communications network and configured to transmit information indicating that the fault has occurred in the first communications network to the management controller via the second communications network;
• the management controller configured to determine that the fault has occurred in the first communications network when the management controller has detected the fault in the first communications network, and/or when the management controller has received the information from at least one of the electronic controllers, the management controller being configured to control the electronic controllers not to communicate via the first communications network and to control the motor drive controller to stop the drive motor when it is determined that the fault occurs in the first communications network.

A motor drive controller that is one of electronic controllers in a vehicle control system including the electronic controllers to control a vehicle including an internal combustion engine and a drive motor to move the vehicle, a first communications network which connects the electronic controllers together and via which the electronic controllers communicate, and a second communications network which connects the electronic controllers together and via which the electronic controllers communicate, the motor drive controller comprising:

• a first transceiver configured to communicate via the first communications network;
• a second transceiver configured to communicate via the second communications network;
• a fault detector configured to detect a fault in the first communications network;
• a motor controller configured to control the drive motor;
• and
• a fault processer configured to control the second transceiver to transmit information indicating that the fault has occurred in the first communications network via the second communications network to a management controller that is one of the electronic controllers and to control the motor controller to stop the drive motor in response to detecting the fault in the first communications network.

A management controller that is one of electronic controllers in a vehicle control system including the electronic controllers to control a vehicle including an internal combustion engine and a drive motor to move the vehicle, a first communications network which connects the electronic controllers together and via which the electronic controllers communicate, and a second communications network which connects the electronic controllers together and via which the electronic controllers communicate, the management controller comprising:

• a first transceiver configured to communicate via the first communications network;
• a second transceiver configured to communicate via the second communications network;
• and
• a fault processer configured to control the electronic controllers not to communicate via the first communications network and to control a motor drive controller to stop the drive motor on receiving information via the second transceiver indicating that the fault has occurred in the first communications network.