-Changing some geometric characteristic of the impeller in centrifugal pumps improves their performance. It is known that blade exit angle plays very important role in the performance of a centrifugal pump. To investigate effect of blade exit angle on the performance of centrifugal pump by means of experiment is very expensive and lengthy process. Due to expensive and lengthy process, it can be...

To enhance the reliability of wind turbine generation systems that are generally located in remote area and subjected to harsh environment, we design pitch angle control for variable speed turbines with function fault diagnosis tolerance. The main targeted this research is mechanical wear possible break blade, gear set or shaft, which cause shaft rotary friction change. proposed method uses a d...

Insects produce a variety of exquisitely controlled manoeuvres during natural flight behaviour. Here we show how hawkmoths produce and control one such manoeuvre, an avoidance response consisting of rapid pitching up, rearward flight, pitching down (often past the original pitch angle), and then pitching up slowly to equilibrium. We triggered these manoeuvres via a sudden visual stimulus in fro...

3D Virtual Environments (VE) are becoming popular as a tool for cognitive, functional and psychological assessment. Navigation in these environments is recognized as one of the most difficult activities in 3D Virtual Environments (VE). Users unfamiliar to 3D games, specially elder persons, get puzzled when they try to virtually move an avatar through these environments. Their inability to navig...

The feasibility of using a motion sensor to replace a conventional electrolarynx(EL) user interface was explored. Forearm motion signals from MEMS accelerometer was used to provide on/off and pitch frequency control. The vibration device was placed against the throat using support bandage. Very small battery operated ARM-based control unit was developed and placed on the wrist. The control unit...

In this paper, the voltage and frequency control of an isolated self-excited induction generator, driven by wind turbine, is developed with emphasis on nonlinear auto regressive moving average (NARMAL2) based on neural networks approach. This has the advantage of maintaining constant terminal voltage and frequency irrespective of wind speed and load variations. Two NARMA L2 controllers are used...

Abstract With increasing demand for rotor blades in engineering applications, improving the performance of such structures using morphing has received considerable attention. Resonant passive energy balancing (RPEB) is a relatively new concept introduced to minimize required actuation energy. This study investigates RPEB helicopter with lag–twist coupling. The structure rotating blade moving ma...

An important engineering challenge is the design of a wind turbine’s pitch angle controller. The dependability, safety, and power output maximization turbine are all impacted by this In study, 2 MW doubly fed induction generator blade controller with novel fuzzy logic tested in simulated environment. evolutionary algorithm technique used to optimize three inputs. A genetic specified for number ...