The Automobiles are vehicles widely used to transport passengers and goods around the world. When traveling on the road, many factors affect the oscillation of the automobile. In particular, the stimuli from the road surface are the direct causes of its instability. The automobile’s suspension system has the role of regulating and extinguishing these oscillations quickly. To improve the efficiency, stability, and comfort of the vehicle, the active suspension system is proposed. This study establishes the quarter dynamics model to describe the vehicle’s oscillation. Besides, the LQR control method for the active suspension system equipped on the vehicle also is introduced. In this paper, the closed multi-loop algorithm is used to optimize the controller’s parameters. This is one of the novel and original methods, and it gives high efficiency and stability under many conditions. The results of the article showed that when the vehicle used the active suspension system controlled by the LQR controller, the vehicle's oscillation parameters were significantly reduced. For cyclic oscillations, the average values of displacement and acceleration of the sprung mass are only about 25.25% and 32.47% respectively compared to the case of the vehicle using the passive suspension system. For random oscillators, this falls between 43.37% and 73.23% respectively. In the future, more complex control models can be further researched and developed.


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    Title :

    Optimizing the Parameter of the LQR Controller for Active Suspension System


    Additional title:

    Lect.Notes Mechanical Engineering



    Conference:

    Regional Conference in Mechanical Manufacturing Engineering ; 2021 ; Hanoi, Vietnam December 10, 2021 - December 12, 2021



    Publication date :

    2022-06-01


    Size :

    11 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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