Power split hybrid system mode switching hardware-in-the-loop simulation test bench

Abstract

The invention relates to a power split hybrid system mode switching hardware-in-the-loop simulation test bench. The power split hybrid system mode switching hardware-in-the-loop simulation test bench includes a PC, a finished automobile controller, an AutoBox real-time simulation system and an actual automobile actuator system, wherein the PC is connected with the finished automobile controller and the AutoBox real-time simulation system respectively, and the actual automobile actuator system is connected with the finished automobile controller and the AutoBox real-time simulation system respectively; the AutoBox real-time simulation system acquires signals of the actual automobile actuator system in real time and transmits output signals to the finished automobile controller; the finished automobile controller judges the operating states of a finished automobile according to the signals transmitted by the actual automobile actuator system and the AutoBox real-time simulation system; and the AutoBox real-time simulation system receives feedback signals of the actual automobile actuator system and performs model simulation operation, and mode switching is completed. Compared with the prior art, the power split hybrid system mode switching hardware-in-the-loop simulation test bench of the invention has the advantage that the power split hybrid system mode switching hardware-in-the-loop simulation test bench can improve the development efficiency of power split hybrid system mode switching control strategies.

Description

technical field [0001] The invention relates to a power system hardware-in-the-loop simulation test bench, in particular to a power split hybrid power system mode switching hardware-in-the-loop simulation test bench. Background technique [0002] The power split hybrid system (Power Split Hybrid System) is composed of a planetary row coupling mechanism, a generator, an electric motor, an engine, a battery, an inverter, a wet brake or a clutch, etc. The engine passes through the power split mechanism (planetary row), a part of the power directly drives the vehicle through the mechanical path, and the other part of the power drives the vehicle through the electric power path. The power ratio of the two can be adjusted according to the driving road conditions. When the vehicle speed is low, the electric power path is the main path to optimize the engine working area; when the vehicle speed is high, the mechanical path is the main path to obtain higher transmission efficiency. ...

AI Technical Summary

Problems solved by technology

The most important aspect of the control of the hybrid power system is that the smoothness of the vehicle is optimized during the mode switching process, and the impact is minimized. For the mode switching of the system, especially the switching from pure electric power to the hybrid power mode with engine intervention, wet brakes are involved. The process of separation and combination and the coordinated control of the torque of the generator, motor, and engine, especially the control of the power split transmission mechanism with a special structure such as planetary row coupling, the control strategy is complex and difficult, and the domestic power split hybrid system mode The research on the switching control strategy is still in its infancy, and most of them are offline simulations by establishing mathematical models of the mode switching control system, which cannot reflect the different dynamic response characteristics of the engine, generator, motor, and brake in the process of coordinated control. Corresponding mode switching hardware-in-the-loop simulation test benches are few

[0003] Most of the existing hardware-in-the-loop simulation test benches for hybrid mode switching are platforms based on xPC target machines and boards. The downloading of models and the configuration of tool chains are cumbersome, and there is no measurement calibration similar to CANape or ControlDesk. tools to monitor the running status of the simulation test and modify the control parameters of the strategy or the matching parameters of the model online, and the development efficiency of the mode switching control strategy is low

In addition, in the existing hybrid system mode switching hardware simulation test, the hardware-in-the-loop test has been running, the online running speed is slow, the controller runs slowly, and the control strategy development cycle is long

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