Design of a modalized observer with eigenvalue sensitivity reduction

References ^raig, R. R., Structural Dynamics—An Introduction to Computer Methods, Wiley, New York, 1981. Thomson, W. T., Theory of Vibration with Applications, Prentice-Hall, Englewood Cliffs, NJ, 1981. Anderson, R. A., Fundamentals of Vibration, MacMillan, New York, 1967. modalized observers is based on minimizing a cost function, which depends on the norm of the observer modal matrix, the condition number of this modal matrix, and directional information about the initial condition mismatch. We compare this new modalized observer design method with the approach described in Ref . 1 to show the advantages of the hew method.