Sliding mode control method for multi-mode electronic throttle valve

Abstract

The invention discloses a sliding mode control method of a multi-mode electronic throttle valve. The sliding mode control method comprises the following steps: constructing a semi-Markov switching system model of the multi-mode electronic throttle valve under random denial of service attack; designing a compensation strategy based on a model and constructing a sliding mode switching surface function related to an attack probability, further obtaining a closed-loop augmented system and performing stability analysis, obtaining a symmetric positive definite matrix from an analysis result, and calculating sliding mode controller parameters meeting a system stability target after variable substitution; based on the sliding mode controller parameters, designing a discrete time sliding mode control law of modal dependence; and carrying out sliding mode switching surface accessibility analysis based on the system law. According to the method, the uncertain dynamic characteristics of the multi-mode electronic throttle valve under the random denial of service attack are accurately described, the influence of the random denial of service attack on the electronic throttle valve is effectively inhibited, the sliding mode control problem of the multi-mode electronic throttle valve under the random denial of service attack is solved, and the safety of the networked electronic throttle valve is improved.

Description

Technical field [0001] The present invention relates to the field of electronic throttle, and more particularly to a sliding mode control method for multimodal electronic throttle. Background technique [0002] The rapid increase in the national economy and the national consumption level has prompted the rapid growth of total auto production and insurance. At the same time, the rapid growth of car insurance has also brought huge challenges to environmental issues. At present, environmental pollution caused by automobile exhaust emissions has become the primary issue of my country's automobile industry development. Car exhaust emissions and fuel consumption depends primarily on the performance of the engine. In recent years, almost all vehicles, especially those based on spark-fired internal combustion engines, have used electromechanical components of electronic throttle. The electronic throttle is the only passage of the engine air supply, and the performance of its performance ...

AI Technical Summary

Problems solved by technology

At present, three typical network attacks mainly include denial of service attack, spoofing attack and replay attack. However, the damage caused by denial of service attack is almost inevitable. Attackers deliberately attack the defects of network protocols, so that the target network cannot provide shared resource access

Especially during the driving process of the car, if the electronically adjustable throttle valve that controls the power generated by the engine is maliciously attacked, it is very easy to cause poor engine acceleration, increased fuel consumption, and excessive exhaust emissions.

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