Control device of fuel cell vehicle with multi-drive system and control method thereof

摘要

A control apparatus and a control method of a fuel cell vehicle is provided, in which a fatigue value of a plurality of driving portions is determined and respective torques are distributed according to the fatigue value thereof such that the durability thereof is stably improved, thereby improving overall operating performance.

主权项

1. An operating system for a fuel cell vehicle having a plurality of driving systems, comprising:
a vehicle controller applying a signal of an accelerator pedal sensor and a motor speed to a control map to calculate a torque demand amount; a fuel cell controller outputting a total available power according to a driving condition and a driving mode and performing a mild mode operating some fuel cells, and a power mode operating all fuel cells by applying driving conditions selected from a group consisting of temperature, gas pressure, gas flow amount, and humidity; an output controller determining a total torque amount based on the torque demand amount and the total available power, and determining respective fatigue values of respective gear portions according to operation time and torque amount of the gear portions; and a motor controller distributing the total torque amount to each motor of a plurality of motors according to a control signal of the output controller; wherein the output controller applies a minimum torque to each motor engaged with a gear portion having a maximum fatigue value, and applies a maximum torque to a motor engaged with a gear portion having a minimum fatigue value.