We present our recent work on monolithically integrated devices comprising a variety of functional elements such as high speed optical transmitters and receivers, electro-absorption modulators integrated with tunable dispersion compensators and fast-tunable wavelength converters. key words: photonic integration, wavelength converter, high speed modulator and receiver, advanced modulation format

In this paper we discuss the standard LQG control problem for linear, finite-dimensional time-invariant systems without any assumptions on the system parameters. We give an explicit formula for the infimum over all internally stabilizing strictly proper compensators and give a characterization when the infimum is attained.

This thesis studies an innovative working hydraulic system design for mobile applications. The purpose is to improve the energy efficiency and the dynamic characteristics compared to load sensing systems without increasing the complexity or adding additional components. The system analysed in this thesis is referred to as flow control. The fundamental difference compared to load sensing systems...

Future space systems will require high robustness of the control system as well as high performance because of their two major features: lightly damped structural dynamics; and nonlinear inertia properties induced by the large motion of articulating sensor heads and antennas. Effective robust control design techniques are needed to satisfy the performance requirements of future space systems in...

The paper deals with the modeling and identification of the gravity compensators used in heavy industrial robots. The main attention is paid to the geometrical parameters identification and calibration accuracy. To reduce impact of the measurement errors, the design of calibration experiments is used. The advantages of the developed technique are illustrated by experimental results .

BACKGROUND Due to various options for tissue resection and preoperative markings, many different reports on aesthetics and patient’s satisfaction exist. To assess differences among tissue resections and risk factors, we herein analyzed satisfaction levels of patients that underwent upper blepharoplasty. METHODS A retrospective analysis during the period from January 2006 to June 2013 w...

For nonlinear control systems, we consider the problem of dynamic feedback linearization. In particular, for a restricted class of dynamic compensators that correspond to adding chains of integrators to the inputs, we give an upper bound for the order of the compen-sator that needs to be considered. Moreover, in the case of 2-input systems, we show that this bound is sharp.

The article describes the design of a synchronous compensator with biaxial excitation and its automatic control system. In addition, issues ensuring required voltage level at fixed points using compensators were considered. U-shaped characteristic generator was obtained.