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Input-Delayed Control of Uncertain Seat Suspension Systems With Human-Body Model

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

This paper deals with the problem of input-delayed robust H?? state-feedback controller design for a class of semi-active seat suspension systems with parameter uncertainties and actuator time delays. A vertical vibration model of human body is employed and put together with the plant of the seat suspension system. The controller design is cast into a convex multi-objective optimization problem with linear matrix inequality (LMI) constraints by defining a Lyapunov functional and using the delay partitioning method. The usefulness and advantages of the proposed controller design methodology are demonstrated through a design example.

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Control Systems Technology, IEEE Transactions on  (Volume:18 ,  Issue: 3 )