A neural network--based adaptive passive output feedback control problem is studied for a class of multi-input multi-output nonlinear systems with unknown nonlinearities and unknown parameters. Neural networks are used to identify unknown nonlinearities, and the update laws of weight parameters and constant parameters are proposed. The design methods of the adaptive passive controllers for this...

This paper develops the architecture of a digital PWM controller for application in multi-phase voltage regulation modules (VRM’s) with passive current sharing. In this context, passive current sharing and VRM transient response are analyzed. A scheme for sensing a combination of the VRM output voltage and output current with a single lowresolution windowed analog-to-digital converter (ADC) is ...

In this paper a methodology for design of stabilizing control for high order system via reduced order model is presented. In the first part a method is proposed for the reduction of original higher order passive system to a lower order stable model, using this reduced order model, a strictly passive controller of order equal to that of reduced order model is designed. It is shown that this lowe...

This paper investigates the problem of non-fragile observer-based passive control for descriptor systems with time-delay. The perturbations in both the control gain and observer gain of the observer-based controller are considered. For the cases of the additive perturbations and multiplicative perturbations, sufficient conditions are given such that the closed-loop systems are admissible and pa...

We will give general sufficient conditions under which a controller achieves robust regulation for a boundary control and observation system. Utilizing these conditions we construct a minimal order robust controller for an arbitrary order impedance passive linear port-Hamiltonian system. The theoretical results are illustrated with a numerical example where we implement a controller for a one-d...

This work proposes and studies a new repetitive controller for discrete-time systems which are required to track or to attenuate periodic signals. The main characteristic of the proposed controller is its passivity. This fact implies closed-loop stable behavior when it is used with discrete-time passive plants. The work also discusses the energetic structure, the frequency response and the time...

YONGCHAO ZHANG, GUOGUANG ZHANG, FAN YU* State Key Laboratory Mechanical System & Vibration, School of Mechanical Engineering Shanghai Jiao Tong University 800 Dongchuan RD. Minhang District, Shanghai CHINA [email protected] Abstract: This paper presents the modeling and μ synthesis for a vehicle active suspension system with a motor actuator, and analyses the performances of the active suspensi...

Chapter 3 gives an account of the performance of adaptive shunt passive filter controlled by the ANN controller. Its performance was tested by simulation and experiments on 3 thyristor converter fed passive load. It was observed that the adaptive shunt passive filter provides the designed amount of reactive power compensation and filters the harmonic components. However, THD in source current ...

abstract An analytical investigation of a half-car model including passenger dynamics, subjected to random road disturbances is performed, and the advantage of active over conventional passive suspension systems are examined. Two diierent performance indices for optimal controller design are proposed. The performance index is a quantiication of both ride comfort and road handling. Due to practi...