Dynamic coordination control method for power domain of hybrid power commercial vehicle

Abstract

The invention provides a hybrid power commercial vehicle power domain dynamic coordination control method, and belongs to the field of hybrid power vehicle control. The smoothness influence caused by a driving mode needs to be considered when gear shifting is not carried out, and the influence mainly focuses on the intervention and quit transient process of power of an electric drive system or an engine; after gear shifting is started, torque unloading treatment needs to be conducted on an engine due to separation of a clutch, at the moment, power interruption of a vehicle occurs, and the torque requirement of a driving motor needs to be calculated according to the driving torque requirement and the engine torque unloading dynamic process; after gear shifting is completed, when the clutch is combined, in order to rapidly recover vehicle power and ensure that loss in the clutch sliding mode process is minimum, the engine needs to gradually rise torque, and the controller accurately calculates the needed motor torque compensation amount at the same time. Coordinated control in the process can guarantee longitudinal smoothness of a vehicle when the clutch is combined, meanwhile, the clutch combining process can be accelerated by adjusting the rotating speed of the output shaft of the clutch through dynamic compensation of the electric drive system, and the gear shifting time is effectively shortened.

Description

technical field [0001] The invention relates to the field of hybrid vehicle control, in particular to a dynamic coordination control method of a hybrid commercial vehicle power domain. Background technique [0002] Commercial transport vehicles (hereinafter referred to as commercial vehicles) have made significant contributions to my country's modern infrastructure. "Economy and environmental protection, safety and efficiency, comfort and reliability" are common requirements for the development of the commercial vehicle industry. The development of high-quality commercial vehicle hybrid systems has gradually It has become a common demand for the development of the domestic commercial vehicle industry. The hybrid system has the advantages of good power, low energy consumption, and low emissions, and has been widely used in the international market. However, in the application of commercial vehicles in my country, how to take into account the quality advantages of "safety, comf...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the deficiencies in the prior art, the present invention designs a hybrid commercial vehicle power domain dynamic coordination control method based on the P4 configuration hybrid vehicle, which can realize multi-objective and efficient integration of each sub-controller in the vehicle power domain, In turn, it can break through the control boundary of each sub-executive component, and improve the shortcomings of traditional distributed control communication, such as low communication efficiency, poor data transmission accuracy, and redundant wiring harness and controller functions. At the same time, the centralized power domain control architecture is also optimized for comprehensive control of multi-dimensional performance. Provide an advantageous platform foundation, which can give full play to the redundant drive characteristics of the P4 configuration hybrid, realize stable control in the power domain, improve the overall quality of hybrid vehicles, and meet the needs of users for smooth shifting, driving economy and vehicle power. need

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