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In this paper, we consider a dynamic feedback problem of a pendulum coupled with a viscous damped wave equation. We show that the system operator generates a C0-semigroup of contractions in the energy state space, and the system is well-posed. By giving the asymptotic expressions of the eigenvalues of the system, we know that they all locate in the left hand side of the complex plane. It follows that...
This paper proposes Composite Nonlinear Feedback (CNF) controller application for yaw rate tracking control of active front steering (AFS) for vehicle equipped by Steer-by-Wire (SBW). CNF controller is used in AFS system to achieve a fast tracking response of yaw rate according to the desired response and to generate correction steer angle input to enhance vehicle maneuverability. A 2-DOF linear vehicle...
This paper presents a new nonlinear path-following guidance method for autonomous vehicles, which integrates two guidance laws that have given good results independently in applications in autonomous ground, marine, and air vehicles. This new technique retains the best aspects of its two supporting methods, whereas it overcomes some of their drawbacks. It uses the control law by Park et al. to command...
This paper describes a control system design methodology used to produce an experimental active stability system for a high speed railway vehicle. The complete design process is described, starting with generating mathematical models of the system for control system design and for system validation. The control strategy is briefly outlined along with the necessary refinements required for practical...
This paper investigates the problem of active flutter suppression for a one-dimensional two degrees of freedom airfoil with leading and trailing edge flap control. The goal is to design an active flaps control capability to suppress the flutter instability and enhance the sub critical aero elastic response to time-dependent external pulses. A new interpretation for the modeling of the airfoil is given...
The BTT flight control system design is researched and established for flight vehicle control mathematical model, control gain solution and mathematical simulation. Firstly, the design of BTT flight control system is put forward, and then a linear controller is designed with fuzzy control theory. Secondly, the flight vehicle's characteristic is analyzed, and the disturbance model is set up. The Frequency-domain...
A positive position feedback controller is modified and a new active vibration control technique is developed. Unlike the conventional positive position feedback, the new controller separates the damping and stiffness control using two parallel first order and second order compensators. The second order compensator has a damping ratio as low as the damping of flexible structure to provide periodic...
Electronic control system has become increasingly popular in automotive applications in recent years, resulting in significant improvement on the vehicle performance. Chassis systems were made progress more stabile and higher dynamic performance by braking control, steering control and suspension control. Especially, ESC (electronic stability control) as an active safety technology assists the driver...
This paper presents the lateral/directional stability and control analysis and the control design results for the Reusable Launch Vehicle on suborbital reentry. The relative location of the open-loop quadratic poles and zeros is discussed. The feedback of roll rate to aileron is of better effectiveness to damping the Dutch roll than the feedback of yaw rate. To avoid the adverse yaw by ailerons, a...
In this paper, a new research for semi-active suspension system of vehicle is proposed. Assuming the stochastic excitations are Gauss white noises, we establish a stochastic model on semi-active suspension system. Here we consider two kinds of stochastic excitations: one is the inner multiplicative excitation brought by the inner system such as the spring and damper, the other is the outer excitation...
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