Mixed-Sensitivity H Control for Optical Pickup Systems

Mixed Sensitivity H Control of a Three-Tank-System

-A mixed sensitivity H control methodology is tested on a Three-Tank-System laboratory prototype. The methodology is based on a stable precompensator and its dual post-compensator which allows to solve a mixed sensitivity problem. Frequency responses show that it is possible to shape the open loop transfer function by the control parameters. Time responses are given under flow leak, close conne...

Mixed H 2 =h 1 Control of Sampled-data Systems

A worst-case mixed H 2 =H 1-optimal control problem is formulated and solved for sampled-data systems. The solution is obtained in terms of a set of synthesis equations, which correspond to similar synthesis equations for the continuous and discrete mixed H 2 =H 1 problems. The mixed H 2 =H 1 problem can be applied to the design of controllers which achieve robust H 2 performance for uncertain ...

Reflective Optical Pickup For Violin

We present here the development of optical pickup for acoustic violin. Unlike other optical pickups, this one works in a reflective mode which is potentially less intrusive. This pickup, aimed principally at pitch tracking, uses a modulation technique to improve the signal-to-noise ratio, and limit artifacts of the ambient light.

Stochastic Mixed LQR/H∞ Control for Linear Discrete-Time Systems

Robust Mixed H2/h∞ Control for Systems with Stochastic Nonlinearity

In this paper, the problem of mixed H2/H∞ control is considered for a class of uncertain discrete-time nonlinear stochastic systems. The nonlinearities are described by statistical means of the stochastic variables, and the uncertainties are represented by deterministic norm-bounded parameter perturbations. The mixed H2/H∞ control problem is formulated in terms of the notion of exponentially me...