Method and system for integrated control of automobile chassis

Abstract

The present invention provides an integrated control method and system for an automobile chassis, wherein the control method includes: the cooperative control unit respectively receives from the CAN bus the first engine torque output by the engine management system, the first engine torque limit request output by the four-wheel drive controller, The second engine torque limit request output by the body stability control system, the third engine torque limit request output by the transmission control unit; and the first engine torque are controlled cooperatively, and the second engine torque is output as the engine execution torque. The beneficial effects of the embodiments of the present invention are: through the cooperative work of various systems, various performances such as fuel economy, power performance, and handling stability of the vehicle are effectively improved; according to the characteristics of oil temperature, disc temperature and speed difference, multi-parameter , Multi-level torque limiting control strategy to ensure the comprehensive optimization of vehicle performance and component life.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an integrated control method and system for an automobile chassis. Background technique [0002] With the rapid development of advanced technologies such as modern control theory, multi-sensor information fusion, and large-scale integrated circuits, as well as the perfect pursuit of automobile products by human society, the chassis with the control goals of improving vehicle ride comfort, active safety and handling stability Integrated control has become a research hotspot in the field of vehicle engineering. Through the coordination of the control functions of the chassis-related subsystems, the functional potential of each control module can be fully tapped, the integrated global control of the chassis can be realized, and the comprehensive performance of the vehicle can be improved. However, in the process of vehicle development, most of the key electronic control systems...

AI Technical Summary

Problems solved by technology

However, in the process of vehicle development, most of the key electronic control systems are independently designed and developed by each component manufacturer, without considering the interaction and coupling with other electronic control systems. There is potential for mutual interference and influence

Existing chassis integrated control strategies are generally only aimed at conventional two-wheel drive vehicles or hybrid vehicles, and less consideration is given to controlling the coordination of various systems, especially the compatibility and matching of the torque manager control of the four-wheel drive system and the chassis electronic control system of other conventional systems become a difficulty, resulting in low power performance and fuel economy of the vehicle

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