In this paper, we have developed a detailed mathematical model of a pneumatic actuator for a Variable Geometry Turbocharger (VGT) equipped with an Electro-pneumatic Pressure Converter (EPC). This model may require com...
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In this paper, we have developed a detailed mathematical model of a pneumatic actuator for a Variable Geometry Turbocharger (VGT) equipped with an Electro-pneumatic Pressure Converter (EPC). This model may require complex calculations for control purpose;therefore the dynamics of the EPC have been neglected and replaced by a static gain. These models incorporate friction and aerodynamic force related effects by using adaptive LuGre model. To compensate for parametric uncertainties, two single-input single-output nonlinear position control laws are designed using the second order sliding mode (SMC) and backstepping control. A comparative study with experiments shows the effectiveness of the proposed controllers.
The aim of this paper is to develop an active steering assistance system to avoid the rollover of heavy vehicles (HV). The proposed approach is applied on a single body model of HV presented in this paper. An estimato...
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The aim of this paper is to develop an active steering assistance system to avoid the rollover of heavy vehicles (HV). The proposed approach is applied on a single body model of HV presented in this paper. An estimator based on the high-order sliding mode observer is developed to estimate the vehicle dynamics, such as lateral acceleration limit and center height of gravity. Lateral position and lateral speed are controlled using a twisting algorithm to ensure the stability of the vehicle and avoid accidents. At the same time, the identification of unsprung masses and suspension stiffness parameters of the model have been computed to increase the robustness of the method. Some simulation and experimental results are given to show the quality of the proposed concept.
twisting, second order sliding mode control is presented to accommodate the thruster faults in the nonlinear MIMO picosatellite formation flying system with unknown time-varying disturbances. Robustness and stability ...
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ISBN:
(纸本)9781457706530
twisting, second order sliding mode control is presented to accommodate the thruster faults in the nonlinear MIMO picosatellite formation flying system with unknown time-varying disturbances. Robustness and stability of the proposed scheme is proved using twisting algorithm and its capability for formation keeping demonstrated against periodic thruster faults and external disturbances through simulations.
In this paper, the control of an electronic throttle valve based on second-order sliding-mode concepts is presented. The so-called twisting algorithm is chosen as the control law. It is shown that the tracking perform...
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In this paper, the control of an electronic throttle valve based on second-order sliding-mode concepts is presented. The so-called twisting algorithm is chosen as the control law. It is shown that the tracking performance for discontinuous reference signals is significantly improved by introducing nonlinear damping by appropriately specifying the sliding surface. The control concept requires the measured plate angle as well as its time derivative, which is computed with the help of a robust exact differentiator. The effectiveness of the proposed concept, consisting of a twisting algorithm for control and supertwisting algorithm for differentiation, is demonstrated by experimental results.
This paper discusses an integrated vehicle control and vehicles states estimations. The non linear observer, based on sliding mode approach is presented for estimation of the vehicle states. The considered technique i...
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ISBN:
(纸本)9781424446018
This paper discusses an integrated vehicle control and vehicles states estimations. The non linear observer, based on sliding mode approach is presented for estimation of the vehicle states. The considered technique is applied to the estimation problem for automated vehicles operating as two vehicles following. The integrated control consists of second order sliding mode, based on twisting algorithm. The developed controller is tested in scenario of automated driving. Both performance of observer and controller are presented to demonstrate the effectiveness of the sliding mode observer and sliding mode controller in various maneuvers.
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