Switched H∞ Control Strategy of Automotive Active Suspensions
نویسندگان
چکیده
The three main performance metrics in automotive suspensions are passenger comfort, suspension deflection, and road holding ability. It is well-known that these three objectives can not be reached at the same time. In order to reach them “individually”, three linear H∞ controllers are designed. At each moment, the desired performance requirement is chosen with a robust stable control strategy that switches between the three linear H∞ controllers. The switched control logic is not developed in this study. Copyright c © 2005 IFAC
منابع مشابه
Optimal control of switched systems by a modified pseudo spectral method
In the present paper, we develop a modified pseudospectral scheme for solving an optimal control problem which is governed by a switched dynamical system. Many real-world processes such as chemical processes, automotive systems and manufacturing processes can be modeled as such systems. For this purpose, we replace the problem with an alternative optimal control problem in which the switching t...
متن کاملIntegrated Plant, Observer, and Controller Optimization with Application to Combined Passive/active Automotive Suspensions
The plant and control optimization problems are coupled in the sense that solving them sequentially does not guarantee system optimality. This paper extends previous studies of this coupling by relaxing their assumption of full state measurement availability. An original derivation of first-order necessary conditions for plant, observer, controller, and combined optimality furnishes coupling te...
متن کاملThe Virtual Prototype of a Mechatronic Suspension System with Active Force Control
The paper presents the virtual prototype of an automotive suspension system with force generator actuator. The active suspensions use sensors to measure the accelerations of sprung mass and unsprung mass, the analog signals from the sensors being transmitted to the controller, which communicates with the force actuator. In this way, the passenger comfort and car stability are simultaneously imp...
متن کاملRecent Advances in Static Output-Feedback Controller Design with Applications to Vibration Control of Large Structures
In this paper, we present a novel two-step strategy for static output-feedback controller design. In the first step, an optimal state-feedback controller is obtained by means of a linear matrix inequality (LMI) formulation. In the second step, a transformation of the LMI variables is used to derive a suitable LMI formulation for the static output-feedback controller. This design strategy can be...
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 کامل