Constrained Digital Regional Pole Placer for Vehicle Active Suspension
نویسندگان
چکیده
Thispaper presents a new nonlinear controller design method for regional pole placement of uncertain discretetime systems. The constraint of control input saturation is considered in the design. A sufficient condition is derived for the robust stabilization and the desireddynamic performance represented by the settling time and damping ratio.The design is formulated in terms of linear matrix inequality (LMI) optimization. The effectiveness of the proposed design isillustrated by two examples. The first one ishard disk drives, whoseuncertainty is modeled bya norm-bounded form. The resulting controller does not violate the limits, and the second example is on regional pole placement for an uncertain system with and without control saturation. Application to vehicle active suspension to achieve comfortable dynamic performance by pole placement and avoiding actuator saturation is also considered. The results are compared with passive suspension system.
منابع مشابه
Design of a Constrained Nonlinear Controller using Firefly Algorithm for Active Suspension System
Active vehicle suspension system is designed to increase the ride comfort and road holding of vehicles. Due to limitations in the external force produced by actuator, the design problem encounters the constraint on the control input. In this paper, a novel nonlinear controller with the input constraint is designed for the active suspension system. In the proposed method, at first, a constrained...
متن کاملStructured H2 Optimization of Vehicle Suspensions Based on Multi-Wheel Models
Various control techniques, especially LQG optimal control, have been applied to the design of active and semi-active vehicle suspensions over the past several decades. However passive suspensions remain dominant in the automotive marketplace because they are simple, reliable, and inexpensive. The force generated by a passive suspension at a given wheel can depend only on the relative displacem...
متن کاملActive Suspension vibration control using Linear H-Infinity and optimal control
In this paper, the 1/4 vehicle model have been simulated. The vehicle body acceleration using optimal control has been optimized. The vehicle ride comfort is achieved by using robust control, and it has been compared with optimal control. The active suspension can help the vehicle to have a good dynamic behavioral. In this paper, two degrees of freedom dynamic vibration model of a general ve...
متن کاملEnhancement of vehicle stability by adaptive fuzzy and active geometry suspension system
In this paper, the enhancement of vehicle stability and handling is investigated by control of the active geometry suspension system (AGS). This system could be changed through control of suspension mounting point’s position in the perpendicular direction to wishbone therefore the dynamic is alternative and characteristics need to change. For this purpose, suitable controller needs to change...
متن کاملConstrained State and Input Estimation for a MacPherson Suspension Using the Unscented Kalman Filter and a 3D Multibody Model
Introduction Research on control strategies for semi-active and active suspensions of vehicles has been carried out extensively in the last two decades. 1D and 2D analytical models, like the quarter-car model, are commonly employed for suspension control synthesis and analysis. 3D analytical models of both the suspension and the full vehicle have also been employed more recently. The skyhook, g...
متن کامل