Stiction is the most common problem in pneumatic control valves, which are widely used in the process industry. Stiction causes fluctuation of process variables, which lowers productivity. Therefore, developing a method to detect stiction and distinguish it from other causes is crucial to help operators take an appropriate action for improving control performance. The present work proposes a va...

Abstract This product is used in the frame control system of railway vehicles. It integrates remote function, anti-skid function and communication highly modularizes common braking, emergency braking protection functions

The behavior of the passive walker [1] is governed by its dynamics, and therefore, walking velocity cannot be controlled. On the other hand, a hip joint of a human is driven by an antagonistic pair of muscles, and its passivity seems to contribute to his/her behavior. In this paper, we propose to control walking velocity of a pneumatic actuated biped by changing hip passivity. We can control hi...

This project aims to Design and fabricate pneumatic arm for pick and place of cylindrical objects. The handling of materials and mechanisms to pick and place of objects from lower plane to higher plane and are widely found in factories and industrial manufacturing. There are number of pneumatic arms are available which consists of so many mechanisms hence becomes expensive. The designed pneumat...

ADROIT Manipulation platform is a pneumatically actuated, tendon driven 28 degree of freedom platform being developed for investigating complex hand manipulation behaviors. ADROIT derives its unique capabilities, necessary to support dynamic and dexterous manipulation, from a custom designed high performance pneumatic actuation system for tendon driven hands. The custom pneumatic actuation syst...

In the pneumatic driving system for a soft mechanism, control valve is most heavy and expensive device. To realize compact inexpensive system, it necessary to reduce size, weight, cost of valve. previous study, low-cost flow rate type servo valves, that uses buckled tubes gate mechanism in an analog way, were proposed tested. However, these drift overlap zone was observed owing plastic deformat...

The rotary valve is a widely used mechanical device in many solids-handling industrial processes. However, it may also be responsible for most of the attrition effects occurring in a typical process. In this study, the attrition effects occurring in a rotary valve operating as a stand alone device and as part of a pneumatic conveying system are investigated. The Gwyn’s correlation was found to ...

The detection and diagnosis of faults in technical systems are of great practical significance and paramount importance for the safe operation of the plant. The early detection of fault can help avoid system shutdown, breakdown and even catastrophe involving human fatalities and material damage. Since the operator cannot monitor all variables simultaneously, an automated approach is needed for ...

today there are different vibration isolators used in industries according to the weight and excitation frequency of the machines which have vibration. one of them is air spring which is in two types: convoluted air spring and membrane air spring. convoluted air springs are used to control vibrations in low frequency (usually lower than 10 hz) and the membrane ones are used in high frequency (u...