Algorithms of a toe-in active control in motion of a car
Authors: Ryazantsev V.I. | Published: 20.10.2014 |
Published in issue: #10(655)/2014 | |
Category: Transportation and Power Engineering | |
Keywords: suspension geometry of the car, variation of toe, active control system, toe-in control algorithms |
A sharp increase in the number of cars entails the problem of improving motion safety. There exist active and passive safety systems that are quite different from one another. Recent research has shown the importance of a foe-in control during a motion. In this paper, the questions of control toe-in motion of a car are considered. The toe-in control algorithms proposed by the author are analyzed, as well as the control algorithms applied in active control systems using the suspension geometry control for the wheel alignment. The paper presents algorithms of a toe-in control in a straight motion with and without action of external lateral forces, when driving along a curved path, and in the general case of motion. The results of simulation of the car motion with a toe-in control system show the efficiency of this system since it improves the stability of the vehicle. This is confirmed by the tests of cars with a toe-in control system of a rear wheel.
References
[1] Chaikovskii I.P., Salomatin P.A. Rulevye upravleniia avtomobilei [Steering car]. Moscow, Mashinostroenie publ., 1987. 176 p.
[2] Yoshiyuki Yasui. Steering mechanism with toe-in control. Patent US no. 5141069, 1992.
[3] Belousov B.N., Morozov M.V., Kupreianov A.A., Vygonnyi A.G., Kolesnikovich A.N. Uchet tribologicheskikh svoistv elastomerov podsistemy «shina–opornaia poverkhnost’» – put’ k uluchsheniiu tiagovo-stsepnykh svoistv avtomobil’nykh shin [Accounting tribological properties of elastomers subsystem «tire-footprint» – a way to improve traction properties of tires]. Sbornik nauchnykh trudov 5 Belorusskogo kongressa po teoreticheskoi i prikladnoi mekhanike Mekhanika-2011 [Collection of Scientific Papers 5 Belarusian Congress of Theoretical and Applied Mechanics-2011]. Minsk, 26–28 October 2011, vol. 1, pp. 111–119.
[4] Riazantsev V.I. Aktivnoe upravlenie skhozhdeniem koles avtomobilia [Active control of the wheel alignment of the vehicle]. Moscow, Bauman Press, 2007. 212 p.
[5] Unkoo Lee, Sangho Lee, Alexandre Catala. A new 4WS concept for Hyundai Sonata. Available at: http://www.autofocusasia.com/engine_chassis_systems/active_geometry_control_system.htm (accessed 23 June 2014).
[6] Lee S., Sung H., Lee U. The development of active geometry control suspension (AGCS) system. SAE Technical Papers, 2005 SAE World Congress, Detroit, MI, United States, 11 April 2005 through 14 April 2005, Code 90257.
[7] Kopaev A.V., Riazantsev V.I. Matematicheskoe modelirovanie sistemy avtomaticheskogo regulirovaniia ugla skhozhdeniia koles avtomobilia [Mathematical Modeling of System for Automatic Regulation of Toe-in Angle of Car Steerable Wheels]. Vestnik MGTU im. N.E. Baumana. Ser. Estestvennye nauki [Herald of the Bauman Moscow State Technical University. Natural Sciences]. 2004, no. 3(14), pp. 10–18.
[8] Kopaev A.V., Sobolev S.K. Graficheskoe i analiticheskoe issledovanie kompleksnykh kornei kubicheskogo uravneniia s odnim parametrom [Graphical and analytical study of complex roots of the cubic equation with a parameter]. Inzhenernyi zhurnal: nauka i innovatsii [Engineering Journal: Science and Innovations]. 2013, issue 5. Available at: http://engjournal.ru/ catalog/ pedagogika/hidden/741.html (accessed 23 June 2014).
[9] Rassokha V.I., Isaichev V.T., Bondarenko E.V. Ustroistvo kontrolia i regulirovaniia skhozhdeniia upravliaemykh koles ATS v protsesse dvizheniia [Device control and regulation of the convergence of the steered wheels ATS in motion]. Avtomobil’naia promyshlennost’ [Automotive industry]. 2009, no. 5, pp. 21–23.