A new design for a multi-layer dielectric elastomer actuator, reinforced with periodic stiffeners is presented. The resulting actuator enables complex out-ofplane motion without the need of the elastomer membrane prestretch. An in situ optical imaging system is used to capture the complex deformation pattern and track the non-planar displacement and curvature under the applied voltage. The role...

A new design for a multi-layer dielectric elastomer actuator, reinforced with periodic stiffeners is presented. The resulting actuator enables complex out-ofplane motion without the need of the elastomer membrane prestretch. An in situ optical imaging system is used to capture the complex deformation pattern and track the non-planar displacement and curvature under the applied voltage. The role...

This paper presents a “Fingerprint Method” for modeling and subsequently characterizing stochastically controlled actuator arrays. The actuator arrays are built from small actuator cells with structural elasticity. These cells are controlled using a bistable stochastic process wherein all cells are given a common input probability (control) value which they use to determine whether to actuate o...

Duty cycle modulation of the alternate blowing from two opposite facing plasma actuators on the leeward surface near the apex of a cone having semi-apex angle of 10° to control the mean lateral force, moment and the flow control mechanisms are presented. The pressure distributions over the cone forebody are measured using steady pressure-tappings. The flowfields are visualized by a two-dimensio...

In design problem such as a new configuration of plasma actuator for maximizing the velocity of the airflow, experimental setup is done by an ad-hoc procedure. This provides the researcher with a relationship of the input parameters (width of the electrode, distance of the electrodes, the voltage and etc) and the velocity. As the experiments are time consuming and expensive in most of the cases...

The problem of flow control under conditions a turbulent boundary layer at transonic and supersonic free-stream velocities is considered. Such flows are integral components the flight process exert significant effects on around both aerodynamic object as whole its individual elements. present paper describes investigations combined device (“plasma wedge”), which wedge mounted along with energy ...

Abstract This paper presents the first result using nitrogen-seeded exhaust feedback control of NII impurity emission front in TCV. The position is consistently located below its commonly used CIII counterpart, indicating representative a colder plasma region. We demonstrate for two cases: (a) nitrogen seeding as sole actuator, and (b) deuterium fueling an actuator while injecting small amount ...

This chapter surveys the existing representative work in both sensor-actuator and actuator-actuator coordination. Sensor-actuator coordination deals with establishing data paths between sensors and actuators, and can be used for sensor deployment. Actuatoractuator coordination includes robot coordination for sensor placement, dynamic task allocation, selecting best robot to respond to reported ...

this paper presents a new observer design methodology for a time varying actuator fault estimation. a new linear matrix inequality (lmi) design algorithm is developed to tackle the limitations (e.g. equality constraint and robustness problems) of the well known so called fast adaptive fault estimation observer (fafe). the fafe is capable of estimating a wide range of time-varying actuator fault...