Proper temperature control of Proton Exchange Membrane Fuel Cells is a crucial factor for optimizing fuel cell performance. This paper describes a model-based characterization of the equilibrium points of an open-cathode fuel cell system. Phase plane analysis of the nonlinear model versus a linearized model around different points of operation shows the potential of approximating the nonlinear ...

Abstract— A fundamental problem for control engineers is that of output tracking. The earlier approaches are restricted to certain classes of systems precluding the presence of zeros from certain regions in the complex plane, and do not reasonably take into account process and measurement noise. A technique to achieve output tracking applicable to non-minimum phase linear systems is presented w...

An experimental method is proposed to estimate all design specifications represented by circles in the Nyquist plane (e.g., phase margin, sensitivity, and closed-loop bandwidth) in case of closed-loop dc/dc switching converters. The method is based on the complete root contour (CRC) analysis in the root locus plane. All typical specifications for controller design are experimentally checked in ...

In this paper are presented the analysis of three-phase boost rectifier converters in close loop using PI classical controller and PI fuzzy controller. A multi-loop controller for the three-phase boost rectifier consists of an outer loop to regulate the output voltage and two inner current loops one each for the d and q axis input currents. The current loops control the decoupled channels of th...

This paper addresses real-time adaptive Phase-lead controller for maglev systems using digital signal processors (DSP). With an adaptive phase-lead controller, the DSP automatically updates the controller parameters to achieve the desired system output. The controller is applied to maglev systems. Different adaptation rates were tested. Test results show that controller parameters converged to ...

A novel graphical tuning method of PID controller for output voltage regulation a DC–DC boost converter is proposed. The advantage the presented that desired robustness level in terms gain and phase margins can be pre-specified. technique to limit noise control signal pre-specified value by selecting derivative ( k d ), also discussed. Simplicity an added advantage. Concept root crossing bounda...

SUMMARY In OpenFlow, data and control plane are decoupled from switches or routers. While the data plane resides in the switches or routers, the control plane might be moved into one or more external servers (controllers). In this article, we propose verification mechanisms for the data plane functionality of switches. The latter consists of two parts: (1) Flow-Match Header part (to match a flo...

With intensive research on robot and wide application of machine vision and movement control in relevant field of robot, image recognition and movement control of robot have become the research focus gradually. This thesis sets the plane non-holonomic mobile robot as the research subject, mainly discusses the control of the plane nonholonomic mobile robot based on image recognition, it has put ...

In this paper, the modified linearized Phillips-Heffron model is utilized to theoretically analyze asingle-machine infinite-bus (SMIB) installed with SSSC. Then, the results of this analysis are used forassessing the potential of an SSSC supplementary controller to improve the dynamic stability of apower system. This is carried out by measuring the electromechanical controllability through sing...