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Design study of an adaptive Fuzzy-PD controller for pneumatic servo system.
Due to the compressibility of air and the nonlinear characteristics of pneumatic elements, pneumatic servo control is much more difficult to achieve than electric or hydraulic ones [3,4].
This pneumatic servo control system was successfully applied in the position, orientation, and stable flying control for aerospace crafts and missiles.
Regardless of the type, the proportional valve is the most expensive component of the pneumatic servo system, which diminishes the above-mentioned advantages of pneumatic drives [1, 2].
This pneumatic servo dispensing system is a positive rod displacement metering system that combines the cost efficiency of a pneumatic drive motor with the controlling accuracy of a servo drive motor.
1 -- Sealant Equipment & Engineering has launched Pneumatic Servo Dispensing (PSD) system, which is a positive rod displacement metering system combining the cost efficiency of a pneumatic drive motor with the controlling accuracy of a servo drive motor.
When using proportionally controlled pneumatic servo valve, the error in torque is decreased to an amount of 1.9% [1].
The company says the increasing industry adoption of pneumatic servo valve technology was a driving factor in the development of the position-feedback option for the cylinder.
It features pneumatic servo valves, electric servo-driven plugs, vertical preheat oven, and automated sheet-width adjustment.
An infinitely adjustable pneumatic servo cylinder moves the stopper into the position required by the pouring program.
Pneumatic servo systems play an important role and are widely used in modern industry (see pneumatic muscle systems [1,2], pneumatic brake systems [3], pneumatic manipulators [4,5], ball-plate pneumatic systems [6], etc.), since they have lots of advantages, such as energy saving, high power-to-weight ratio, low cost, simple structure and operation, and ease of maintenance [7, 8].