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Robust Sampled-Data H_{\infty } Control for Vehicle Active Suspension Systems

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3 Author(s)
Huijun Gao ; Space Control & Inertial Technol. Res. Center, Harbin Inst. of Technol., Harbin, China ; Weichao Sun ; Peng Shi

This brief investigates the problem of robust sampled-data H control for active vehicle suspension systems. By using an input delay approach, the active vehicle suspension system with sampling measurements is transformed into a continuous-time system with a delay in the state. The transformed system contains non-differentiable time-varying state delay and polytopic parameter uncertainties. A Lyapunov functional approach is employed to establish the H performance, and the controller design is cast into a convex optimization problem with linear matrix inequality (LMI) constraints. A quarter-car model is considered in this brief and the effectiveness of the proposed approach is illustrated by a realistic design example.

Published in:

Control Systems Technology, IEEE Transactions on  (Volume:18 ,  Issue: 1 )