i need the ppt of miniature sensors and actuators of nanotechnology with mathematical,computer,electronical and mechanical component ....etc

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Electroactive Polymer (EAP) Actuators


Electroactive Polymer Technology

Electroactive polymers (EAP) are promising as actuators in intelligent material
systems, where large deformations are required. Electromagnetic, piezoelectric
or shape memory alloy actuators are either too heavy, too complex or too slow
for such applications. EAP however are relatively lightweight, rather simple and
fast enough.
In particular, dielectric electroactive polymers were shown to have good ove ....etc

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Abstract

In paper the fundamental question about optimal interaction between the controlling stimuli generated by the active (powered) and the passive (unpowered) drives of the robotic systems have been studied. A mathematical statement of the problem has been proposed that is suitable to study this question for the semi-passively actuated n-degree-of-freedom robotic systems. The problem is formulated as an optimal control problem for n-degree-of-freedom mechanical system models a semi-passively actuated robot. We take into account the inter ....etc

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Hydraulic actuators: cylinders



Properties:

.The cylinders have to be good quality steel with close tolerances.
There have to be good sealing both at the piston rod and at the cylinder.

.With time dirt may come in and damage the surfaces. This has to be possibly reduced.
In this case, the leakage will increase all the time.

Calculation of cylinders

1 Stick-slip
2 Transition
3 Normal behaviour

Hydraulic cylinders should be possibly operated in the 3rd region for ....etc

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Please visit the below given thread for more details

http://seminarsprojects.net/Thread-piezoelectric-actuator ....etc

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To get full information or details of latest trends in pneumatic actuators please have a look on the pages

http://seminarsprojects.net/Thread-sensors-and-actuator-system-of-special-hyper-redundant-robot?pid=29423&mode=threaded

if you again feel trouble on latest trends in pneumatic actuators please reply in that page and ask specific fields in latest trends in pneumatic actuators ....etc

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ENGINE VALVES AND MECHANISM


AN AUTOMOBILE

Self propelled transport goods and passengers on ground

Power required produced from within

Differs from aerial transportation vehicles

Other names

CHASSIS - FUNCTIONS

Carry load of the passengers/goods

Support the load of the body, engine, gear box etc.,

Withstand the forces of sudden braking or acceleration

Withstand the stresses due to the bad road conditions

Withstand centrifugal force whil ....etc

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Check Valves: Wafer, Wafer-Lug, and Double Flanged Type


General

SCOPE
This standard covers design, material, face-to-face dimensions,
pressure-temperature ratings, and examination, inspection,
and test requirements for gray iron, ductile iron, steel,
and alloy single and dual plate check valves. Valve configurations
include wafer, wafer-lug, and double flanged type with
facings that will permit installation between ASME and MSS
flanges that conform to the standards and specifications listed
....etc

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An actuator is a component of machines that is responsible for moving or controlling a mechanism or system.

An actuator requires a control signal and source of energy. The control signal is relatively low energy and may be electric voltage or current, pneumatic or hydraulic pressure, or even human power. The supplied main energy source may be electric current, hydraulic fluid pressure, or pneumatic pressure. When the control signal is received, the actuator responds by converting the energy into mechanical motion.

An actuator is the mecha ....etc

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Since 1945 Parker Autoclave Engineers has designed and built premium quality valves, fittings and tubing. Parker Autoclave Engineers ball valve actuators can be supplied with a variety of features and options. Operators are supplied either pneumatic or electric actuated.
FEATURES
Use for remote and automatic operation.

Air-to-open/spring-to-close and air to open and close.

Limit switches or limit switches with visual indicators available.

High temperature options.

Stainless steel housings for corrosive applications.

Manual ove ....etc

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