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

[:=Read Full Message Here=:]

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

[:=Read Full Message Here=:]

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

[:=Read Full Message Here=:]

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

[:=Read Full Message Here=:]

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

[:=Read Full Message Here=:]

This article is presented by:
O. Barambones , A.J. Garrido , F.J. Maseda and P. Alkorta Speed Sensorless Vector Control of Induction Motors Based on
Robust Adaptive Variable Structure Control Law

ABSTRACT
A novel sensorless adaptive robust control law is proposed to improve the trajectory tracking performance of induction motors. The proposed design employs the so called vector (or field oriented) control theory for the induction motor drives and the designed contro ....etc

[:=Read Full Message Here=:]

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

[:=Read Full Message Here=:]

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

[:=Read Full Message Here=:]

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

[:=Read Full Message Here=:]

Vector Control of AC Induction Motors



Introduction

Scalar control of ac drives produces good steady state performance but poor dynamic response. This manifests itself in the deviation of air gap flux linkages from their set values. This variation occurs in both magnitude and phase.

Vector control (or field oriented control) offers more precise control of ac motors compared to scalar control. They are therefore used in high performance drives where oscillations in air ga ....etc

[:=Read Full Message Here=:]