“…9. Hysteretic restoring torque for purely elastic (a), elasto-plastic (b), and plastic (c) torsional deflection hysteresis models can be found by Ma et al (2004). In Fig.…”
Section: Nonlinear Stiffness With Hysteresismentioning
“…9. Hysteretic restoring torque for purely elastic (a), elasto-plastic (b), and plastic (c) torsional deflection hysteresis models can be found by Ma et al (2004). In Fig.…”
Section: Nonlinear Stiffness With Hysteresismentioning
“…As a side note, among the parameters controlling the shape of the hysteresis, is the least sensitive and is the most sensitive to parameter changes [38]. For more detailed and analytical studies on the parameter variations of the Bouc-Wen hysteresis model, the reader can refer to the work of Ikhouane and Rodellar [35].…”
A mathematical model of steering feel based on a hysteresis model is proposed for Steer-by-Wire systems. The normalized BoucWen hysteresis model is used to describe the steering wheel torque feedback to the driver. By modifying the mathematical model of the hysteresis model for a steering system and adding custom parameters, the availability of adjusting the shape of steering feel model for various physical and dynamic conditions increases. Addition of a term about the tire dynamics to the steering feel model renders the steering wheel torque feedback more informative about the tire road interaction. Some simulation results are presented to establish the feasibility of the proposed model. The results of hardware-in-the-loop simulations show that the model provides a realistic and informative steering feel.
“…Recall that the fault detection method assumes that the hysteretic base-isolation is represented by the Bouc-Wen model. This model has gained large consensus within the engineering community because it can capture a wide variety of different shapes of the hysteresis loops as can be seen in [20]. Although the internal parameters of the Bouc-Wen model can be manipulated by applying a voltage in magnetorheological dampers, for simplicity, we assume that they are constant as in [14].…”
Abstract-This paper proposes a fault detection method for hysteretic base-isolation systems. One of the key contributions of this work is a Lyapunov-based restoring force observer that leads to the design of a robust fault detection scheme. The different fault types considered are stiffness and damping variations in the system. The proposed fault estimation method provides a direct estimate of the size and severity of the fault, which can be important in many civil engineering applications. A design procedure is described, and nonlinear simulation results are presented to demonstrate the applicability of the proposed method.
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