Abstract
The tracking control of the steer-by-wire (SBW) system to achevie desired steering motion is the core issue for the design of algorithm. Most of model-based tracking control assumed the constant parameters without the consideration of dynamic characteristics. The external disturbances and model nonlinearities can bring uncertainties of the system parameters. To reduce the influence of parameter uncertainties, an online estimator by output error identification method is proposed to estimate the dynamic parameters of a SBW system. Meanwhile, the parameter gradient projection method is applied to eliminate the parameter drift, while a full order state observer is developed to weaken the effects of noise disturbance during the parameter identification. Since the sensitivity of parameter uncertainties for the feedforward control, the online estimator is incorporated into the control model and improve the controlled robustness. The proposed adaptive feedforward controller is conducted by the real-time experiments to show the tracking performance.
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References
Balachandran, A. and Gerdes, J. C. (2015). Designing steering feel for steer-by-wire vehicles using objective measures. IEEE/ASME Trans. Mechatronics 20, 1, 373–383.
Baviskar, A., Wagner, J. R., Dawson, D. M., Braganza, D. and Setlur, P. (2009). An adjustable steer-by-wire hapticinterface tracking controller for ground vehicles. IEEE Trans. Vehicular Technology 58, 2, 546–554.
Bertoluzzo, M., Buja, G. and Menis, R. (2007). Control schemes for steer-by-wire systems. IEEE Industrial Electronics Magazine 1, 1, 20–27.
Cetin, A. E., Adli, M. A., Barkana, D. E. and Kucuk, H. (2010). Implementation and development of an adaptive steering-control system. IEEE Trans. Vehicular Technology 59, 1, 75–83.
Cetin, A. E., Adli, M. A., Barkana, D. E. and Kucuk, H. (2012). Adaptive on-line parameter identification of steer-by-wire system. Mechatronics 22, 2, 152–166.
Ioannou, A. P. and Sun, J. (1996). Robust Adaptive Control. Prentice Hall. New Jersey, USA.
Kazemi, R. and Janbakhsh, A. (2010). Nonlinear adaptive sliding mode control for vehicle handling improvement via steer-by-wire. Int. J. Automotive Technology 11, 3, 345–354.
Park, T. J., Han, C. S. and Lee, S. H. (2005). Development of the electronic control unit for the rack-actuating steerby-wire using the hardware-in-the-loop simulation system. Mechatronics 15, 8, 899–918.
Sastry, S. and Bodson, M. (1989). Adaptive Control, Stability, Convergence, and Robustness. Prentice Hall. New Jersey, USA.
Setlur, P., Dawson, D., Chen, J. and Wagner, J. (2002). A nonlinear tracking controller for a haptic interface steerby-wire systems. Proc. IEEE Conf. Decision and Control, Las Vegas, USA.
Setlur, P., Wagner, J. R., Dawson, D. M. and Braganza, D. (2006). A trajectory tracking steer-by-wire control system for ground vehicles. IEEE Trans. Vehicular Technology 55, 1, 76–85.
Sinha, N. K. and Kuszta, B. (1983). Modeling and Identification of Dynamic Systems. Springer. Berlin, Germany.
Wang, H., Man, Z., Shen, W., Cao, Z., Zheng, J., Jin, J. and Tuan, D. M. (2014). Robust control for steer-by-wire systems with partially known dynamics. IEEE Trans. Industrial Informatics 10, 4, 2003–2015.
Wang, X., Zong, C., Xing, H., Hu, R. and Xie, X. (2012). Bilateral control method of torque drive/angle feedback used for steer-by-Wire system. SAE Int. J. Passenger Cars-Electronic and Electrical Systems 2012, 2, 479–485.
Wu, X., Ye, C. and Xu, M. (2016). Two-port network based bilateral control of a steer-by-wire system. Int. J. Automotive Technology 17, 6, 983–990.
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Wu, X., Zhang, M., Xu, M. et al. Adaptive feedforward control of a steer-by-wire system by online parameter estimator. Int.J Automot. Technol. 19, 159–166 (2018). https://doi.org/10.1007/s12239-018-0015-2
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DOI: https://doi.org/10.1007/s12239-018-0015-2