Tracking Control

Non-minimum phase tracking control is studied for boost and buck-boost power converters. A sliding mode control algorithm is developed to track directly a causal voltage tracking profile given by an exogenous system. The approximate causal output non-minimum phase asymptotic tracking in non-linear boost and buck-boost power converters is addressed via sliding mode control using a dynamic sliding manifold (DSM). Use of DSM allows the stabilization of the internal dynamics when the output tracking error tends asymptotically to zero in the sliding mode. The sliding mode controller with DSM links features of conventional sliding mode control (insensitivity to matched non-linearities and disturbances) and a conventional dynamic compensator (accommodation to unmatched disturbances). Numerical examples demonstrate the effectiveness of the sliding mode controller even for a known time-varying load. Copyright © 2003 John Wiley & Sons, Ltd.

We present in this paper the stabilization (tracking) with motion planning of the six independent configurations of a mini unmanned areal vehicle equipped with four streamlined rotors. Naturally, the yaw-dynamic can be stabilized without difficulties and independently of other motions. The remaining dynamics are linearly approximated around a small roll and pitch angles. It will be shown that the system

A digital state feedback control method for the current mode control of DC-DC converters is proposed in this paper. This approach can precisely achieve interleaved current sharing among the converter modules. As the controller design and system analysis are performed in the time domain, the proposed method can easily satisfy the required converter specification by using the pole placement technique.

This paper focuses on new technologies and methods used in modern ship control systems. Presented is summary of advanced methods for identifying ship hydrodynamic coefficients, new technologies and methods applied to ship steering systems, nonlinear controller for station-keeping, nonlinear tracking control together with their applications and some technological developments in response to environment issues in marine transportation.

Hydraulic systems are widely used in manufacturing processes and transportation systems where energy inM tensive operations are performed and 0machine1 control is vital. A variety of flow control products exist including manual directional control valves, proportional directional control valves, and servoMvalves. The selection of a conM trol valve actuation strategy is dependent on the system response requirements, permissible pressure drop, and hardware cost. Although high bandwidth servoMvalves offer fast response times ...

The paper deals with a linear belt-driven servomechanism. It proposes new position tracking control algorithm that has been designed by sliding mode control theory. The selected sliding manifold was extended by non-rigid modes of the elastic servodrive. However, the proposed control scheme retains simple and practical for implementation. The experiments presented in the paper show that it effectively suppresses vibrations