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  • Tác giả : Nguyen, Manh Long; Tran, Thi Thu Huong; Nguyen, Tuan Anh; Nguyen, Duc Ngoc; Dang, Ngoc Duyen;  Người hướng dẫn: -;  Đồng tác giả: - (2022)

    This paper introduces the LQR control algorithm for the active suspension system. Because the model of the vehicle dynamics used in this paper includes a hydraulic actuator, therefore, this model will include five state variables. Besides, the process of linearization of the hydraulic actuator is also shown in this paper. This is a completely novel and original method. It is possible to describe almost all the characteristics of hydraulic actuators with just one linear differential equation. Also, the parameters of the LQR controller are optimized through the in-loop optimization algorithm. The results of the research showed that the values of displacement and acceleration of the sprung mass were significantly reduced when this algorithm was used. In the investigation cases, these v...

  • Tác giả : Manh Long Nguyen; Thi Thu Huong, Tran; Tuan Anh, Nguyen; Duc Ngoc, Nguyen; Ngoc Duyen, Dang;  Người hướng dẫn: -;  Đồng tác giả: - (2022)

    This paper introduces the LQR control algorithm for the active suspension system. Because the model of the vehicle dynamics used in this paper includes a hydraulic actuator, therefore, this model will include five state variables. Besides, the process of linearization of the hydraulic actuator is also shown in this paper. This is a completely novel and original method. It is possible to describe almost all the characteristics of hydraulic actuators with just one linear differential equation. Also, the parameters of the LQR controller are optimized through the in-loop optimization algorithm. The results of the research showed that the values of displacement and acceleration of the sprung mass were significantly reduced when this algorithm was used. In the investigation cases, these v...

  • Tác giả : Thi Thu Huong, Tran; Tuan Anh, Nguyen; Thang Binh, Hoang; Duc Ngoc, Nguyen; Ngoc Duyen, Dang;  Người hướng dẫn: -;  Đồng tác giả: - (2022)

    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