We design a controller for flow-induced vibrations of an infinite-band membrane, with flow running across the band and only above it, and with actuation only on the trailing edge of the membrane. Due to the infinite length of the membrane, the dynamics of the membrane in the spanwise direction are neglected, namely, we employ a one-dimensional (1D) model that focuses on streamwise vibrations. T...

This application note describes step-by-step design considerations for a power supply using the FAN480X controller. The FAN480X combines a PFC controller and a PWM controller. The PFC controller employs average current mode control for Continuous Conduction Mode (CCM) boost converter in the front end. The PWM controller can be used in either current mode or voltage mode for the downstream conve...

The aim of this article was to design a MPC controller for the refining stage of an electric arc furnace. A reduced version of the generic EAF model will be used it simplifies the controller. The carbon content is controllable only in one direction it can only decrease asymptotically. The goal of the MPC controller will be to steer the temperature to the desired value before the carbon content ...

This paper presents a sliding mode space vector current modulator for three-phase single stage AC/DC Buck-boost rectifiers. Using this fast and robust control method, this type of converters draw near sinusoidal input currents with high power factor. A Proportional Integral (PI) controller can, then, be adopted to regulate the rectifier output voltage. The references of the sliding mode current...

The servo control design for a piezo-electric dual-stage instrumented suspension to achieve windage vibration reduction for high track density recording is presented in this paper. The servo design exploits the information available from both the sampled position error signal (PES) and a continuous time instrumented suspension signal (ISS) available from an instrumented suspension. The ISS from...

Focuses on the benchmark control problems for seismically excited nonlinear buildings defined by Ohtori et al. (2000). This benchmark study focuses on three typical steel structures, 3-, 9and 20-storey buildings designed for the SAC project for Los Angeles in the California region. The first stage of applying the fuzzy controller to this benchmark study for the 3-storey building is reported. Th...

An unsolved ancient problem in position control of robot manipulators is to find a stability analysis that proves global asymptotic stability of the classical PID control in closed loop with robot manipulators. The practical evidence suggests that in fact the classical PID in industrial robots is a global regulator. The main goal of the present paper is theoreticall...

Using the idea of ‘shaping the control signal’, the authors generalise the time-delayfilter-based deadbeat control for processes with dead time to a two-level control so that actuator saturation is avoided. The controller mimics experienced manual operation to provide a two-level control signal. At the first stage (level), the controller outputs a value very close to the actuator saturation bou...

Objective: A Modified Shuffled Frog Leaping (MSFL) algorithm based Multi-stage Fuzzy (MSF) PID controller is proposed in this paper to solve the Load Frequency Control (LFC) problem in a deregulated environment. The power system LFC problems are caused by small load perturbations which continuously disturb the normal operation of power system. The objectives of LFC are to minimize the transient...

An adaptive hysteresis current controller for single-phase single-stage photovoltaic central inverters is presented. The designed controller is able to eliminate harmonic distortion and to control switching frequency and to inject the current into power grid with good power quality. The simulation model of the system is developed in SIMULINK/MATLAB environment. The controller is found effective...