Four-wheel torque distribution in-loop test device under extreme working condition and torque optimization method

Abstract

The invention provides a four-wheel torque distribution in-loop test device under an extreme working condition and a torque optimization method, the four-wheel torque distribution in-loop test device comprises an upper computer, a hub motor driving automobile and a torque distribution controller, the upper computer communicates with a vehicle controller through a CAN bus, and the vehicle controller performs torque distribution and sends a torque control instruction to a motor controller. The upper computer comprises a simulation test working condition library, control testing under the extreme working condition of severe differential vibration of wheels can be achieved, vehicle state parameters are obtained through sensor multi-signal fusion, a multi-target optimization problem of a real-time adjustment target function is established based on the minimum motor energy consumption, the optimal slip rate and the real-time vehicle state parameters. An improved NAGA-II optimization algorithm is adopted for torque distribution, and control optimization under the extreme working condition is achieved through torque compensation.

Description

technical field [0001] The present application relates to a controller hardware-in-the-loop test system and a control method, and more specifically relates to a four-wheel torque distribution-in-the-loop test device and a torque optimization method under extreme working conditions. Background technique [0002] The basic principle of HIL (Hardware-in-the-Loop) testing is to simulate the sensor signals and communication signals required by the vehicle controller through HIL equipment, and at the same time collect the control signals sent by the vehicle controller. The controller and the vehicle model running in the HIL equipment form a closed loop, thereby realizing the hardware-in-the-loop test of the vehicle controller. Today, HIL hardware-in-the-loop testing has become a very important part of the ECU (Electronic Control Unit, electronic control unit) development process, reducing the number of real vehicle road tests, shortening development time and cost, and improving EC...

AI Technical Summary

Problems solved by technology

However, the current HIL test system, the test conditions are relatively conventional, and it does not consider the test applicable to some extreme conditions.

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