Nowadays the control of stator voltage at a constant frequency is one of the traditional and low expense methods in order to control the speed of induction motors near its nominal speed. The torque of induction motor is a nonlinear function of the firing angle, phase angle and speed. In this paper the speed control of induction motor regarding various load torque and under different conditions ...

Large networks, such as the electric grid, are controlled by multitudes of agents, such as relays, voltage regulators and optimization programs. To make such agents more effective, we suggest: a common framework for specifying tasks, a collaborative net by which neighboring agents can exchange information, and a protocol to ensure that the collaborations will be helpful. We propose a basic prot...

In this paper the H2-optimal control problem of systems with multiple i/o delays is presented. The problem is first converted to an equivalent H2 regulator problem with multiple delays. The idea is to view the regulator problem in time-domain as a linear quadratic regulator problem with multiple input delays. It is shown that the rational part of the optimal controller has the same dimension as...

Trapped and interfacial charges have significant impact on the performance of organic light-emitting devices (OLEDs). We have studied devices consisting of 20 nm copper phthalocyanine (CuPc) as the buffer and hole-injection layer, 50 nm N,N*di(naphthalene-1-yl)-N,N*-diphenyl-benzidine (NPB) as the hole transport layer, and 65 nm tris(8-hydroxyquinolinato)aluminum (Alq3) as the electron transpor...

In this paper we define a p-adic analogue of the Borel regulator for the K-theory of p-adic fields. The van Est isomorphism in the construction of the classical Borel regulator is replaced by the Lazard isomorphism. The main result relates this p-adic regulator to the BlochKato exponential and the Soulé regulator. On the way we give a new description of the Lazard isomorphism for certain formal...

The design of a generalized phase-controlled class E inverter is presented. This design takes into account most of the important parameters which a ect the inverter performance. Moreover, we calculate the design values which achieve zero voltage switching continuously when phase-shift of two inverters varies.

Design Techniques for Fully Integrated Switched-Capacitor Voltage Regulators

Information technology (IT) professionals are entrusted with the design, implementation, and operation of the information systems that support key business processes within organizations. Many organizational stakeholders such as management, investors, and regulators expect these professionals to act ethically, as these systems must accurately reflect all business activity. This expectation has ...

The linear quadratic regulator problem for the second order evolution system with boundary controls is studied. Case that the input-to-state map is non-admissible is treated assuming that the system is exponentially stabilizable by the passive feedback. It is shown that the optimal control is of feedback form in terms of solution to the operator Riccati equation.