i need ppt for speed and current control of bldc motor using sliding mode ....etc

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Am rema,want to know about an efficient common mode hybrid filter used in SMPS for my seminar work.

Abstract obtained from IEE is After the study of electromagnetic interference (EMI)
mechanisms in switching mode power system (SMPS) and the soft
switch, this paper proposes a novel hybrid filter (HEF) to suppress
commend mode EMI in SMPS. The HEF consists of a passive filter
and an active filter. Matching network, which can reduce
impedance mismatching effects, is introduced in passive part. A
feed-forward active filter is adopted ....etc

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Abstract:
The field oriented control emerged as an important approach for the control of AC machines, and continues to be explored and developed in the literature. The estimation of the rotor flux from the measurable variables was the only method used to implement the vector control of the induction machine. To replace the estimator based on the mathematical model of the system, which can lead to unintended errors due to uncertainties on the model and on the measures we use an appropriate observer.

Presented By:
Ch ....etc

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Gm! i want to know about sliding mode control matlab programming for active suspension system. ....etc

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Presented by:
Reza Raoufi
Hamid Khaloozadeh


Abstract

A robust/adaptive stochastic observer is presented for stochastic nonlinear dynamics having excessive uncertainties. It was shown through a new theorem that the proposed nonlinear robust sliding mode observer has very accurate state estimate error characteristic. The observer uses the sliding mode technique for the robustness and a deterministic adaptive law to guarantees a globally asymptotically convergence observation error. Finally, an example is given to illustrate t ....etc

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Abstract

Magnetic servo levitation (MSL) is currently being investigated as an alternative to drive fast-tool servo systems that could overcome the range limitations inherent to piezoelectric driven devices while operating over a wide bandwidth. To control such systems, a feedback-linearized controller coupled with a Kalman filter has been previously described. Performance limitations that degrade tracking accuracy suggest the use of a more robust controller design approach, such as sliding-mode control. Current literature on sliding ....etc

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Submitted By:
Shibayan Chatterjee




Introduction.
Definition.
Control theory is a combined branch of mathematics and Engineering that deals with the dynamical systems. The desired output of the system is called reference and when one or more outputs desire to follow the reference over time a controller is designed and. It helps in manipulating the input to provide the desired output.
The role of control theory can be understood with the help of a simple example. Let ....etc

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Abstract
A major disadvantage of applying sliding mode control to dc/dc converters is that the steady-state switching frequency is affected by line and load variations. This is undesirable as it complicates the design of the input and output filters. To reduce switching frequency deviation in the events of line and load variations, an adaptive feedforward control scheme that varies the hysteresis band according to the change of line input voltage and an adaptive feedback control scheme that varies the control parameter (i.e., sliding coeffic ....etc

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To get full information or details of sliding mode scheme for speed and current control of brushless dc bldc motor please have a look on the pages

http://seminarsprojects.net/Thread-brushless-servomotor

http://seminarsprojects.net/Thread-speed-control-of-dc-motor-ppt

if you again feel trouble on sliding mode scheme for speed and current control of brushless dc bldc motor please reply in that page and ask specific fields ....etc

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Multiband Hysteresis Modulation and Switching Characterization for Sliding-Mode-Controlled Cascaded Multilevel Inverter



INTRODUCTION

THE BASIC motivations for the use of multilevel inverters
are the reduction of voltage stress on power electronic
devices and the reduction in the switching harmonic content
of the voltage delivered by the voltage-source inverter (VSI).
The cascaded H-bridge multilevel-inverter (CHBMLI) configuration
has the advantage of its simplicity and mod ....etc

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