An Algorithm of Integrated Optimal Damping Control of Suspension in Wheeled Vehicles

One of the most promising ways to improve the ride quality of a wheeled vehicle is to develop dynamic semi-active suspension systems and ways to control them. In this paper, systems operating in real-time with current (instantaneous) values of the phase coordinates are referred to as dynamic control systems. The laws of optimal control of the wheeled vehicle suspension that provide an increased level of comfort for the driver and passengers under a wide range of operating conditions are developed. An integrated algorithm of operation of a control system for the suspension of a wheeled vehicle is created. It incorporates dynamic changing of the damping level of the shock absorber and the regulation of road clearance with the aim of enhancing the level of comfort for the driver and passengers. The effectiveness of the proposed algorithm is proved by simulation methods. The «Comfort» criterion is selected to assess the effectiveness of the system controlling the suspension of a wheeled vehicle. It is established that when driving a vehicle with a controlled suspension on different roads with varying speed, the «Comfort» criterion is increased by 20–63 % compared to that for a wheeled vehicle with an uncontrolled suspension.

References

[1] Sukhorukov A.V. Upravlenie dempfiruiushchimi elementami v sisteme podressorivaniia bystrokhodnoi gusenichnoi mashiny. Diss. kand. tekh. nauk [Management of damping elements in suspension system of high-speed tracked vehicles. Cand. tech. sci. diss.]. Moscow, 2003. 204 p.

[2] Du H., Sze K.Y., Lam J. Semi-active H∞ control of vehicle suspension with magneto-rheological dampers. Journal of Sound and Vibration, 2005, vol. 283, is. 3–5, pp. 981–996.

[3] Poussot-Vassal C., Sename O., Dugard L., Gaspar P., Szabo Z., Bokor J. A new semi-active suspension control strategy through LPV technique. Control Engineering Practice, 2008, vol. 16, is. 12, pp. 1519–1534.

[4] Fallah M.S., Bhat R., Xie W.F. New model and simulation of Macpherson suspension system for ride control applications. Vehicle System Dynamics, 2009, vol. 47, no. 2, pp. 195–220.

[5] Laws S.M. An active camber concept for extreme maneuverability: mechatronic suspension design, tire modeling, and prototype development. PhD Diss., Stanford, Stanford University, 2010, 224 p.

[6] Lovchakov V.I., Sukhinin B.V., Surkov V.V. Optimal’noe upravlenie elektrotekhnicheskimi ob"ektami [Optimal control of electrical objects]. Tula, TulSU publ., 2005. 149 p.

[7] Ivaikin V. Ispol’zovanie skol’ziashchikh rezhimov v regulirovanii [The use of sliding modes in the regulation]. Sovremennye tekhnologii avtomatizatsii [Contemporary Technologies in Automation]. 2006, no. 1, pp. 90–94.

[8] Proektirovanie polnoprivodnykh kolesnykh mashin [Design of four-wheel drive wheeled vehicles]. Ed. Polungian A.A. In 3 vol. Vol. 3. Moscow, Bauman Press, 2008. 432 p.

[9] GOST 31191.1–2004 (ISO 2631-1:1997). Vibratsiia i udar. Izmerenie obshchei vibratsii i otsenka ee vozdeistviia na cheloveka. Ch. 1. Obshchie trebovaniia [State Standard 31191.1–2004 (ISO 2631-1:1997). Vibration and shock. Measurement and evaluation of human exposure to whole-body vibration. Part 1. General requirements]. Moscow, Standartinform publ., 2004. 45 p.

[10] Proektirovanie polnoprivodnykh kolesnykh mashin [Design of four-wheel drive wheeled vehicles]. Ed. Polungian A.A. In 3 vol. Vol. 1. Moscow, Bauman Press, 2008. 496 p.