Dr. Mohammed Yousif Hassan* Received on:28/6/2009 Accepted on:3/12/2009 Abstract Pneumatic circuits are widely used in industrial automation, such as drilling, sawing, squeezing, gripping, and spraying. Furthermore, they are used in motion control of materials and parts handling, packing machines, machine tools, foodprocessing industry and in robotics. In this paper, a Neural Network based Fuzz...

In pneumatic circuits, a solenoid valve is a key component for controlling and directing pneumatic energy. The solenoid valve functional performances are defined as response time parameters with respect to its actuations in terms of direction changing time. This paper aims to present response time parameters of solenoid valves under various working pressures. An experimental setup is employed i...

This work presents a model-based predictive control methodology applicable to systems with discrete input values (on/off) subject to a pure time delay. Specifically, the goal of this work is to develop a controller that will track a desired pressure for a monopropellant-powered pneumatic system with binary on/off input valves. The pneumatic actuator is pressurized by the catalytic decomposition...

This study deals with group robots forming a mechanical structure. In this paper, we address the concrete motion mechanisms of the robots. Each robot has a cubic shape with pneumatic actuators. It rotates with a corner of the robot as an axis. To realize the movement, we propose two kinds of mechanical devices. One is a stabilization mechanism that the pneumatic actuator stably forms an arched ...

Mechatronics is the art of directing the advances of a variety of academic and engineering areas to solve the smart machine problems. Author Supervisor Summary Title Language Keywords Document type Date www.md.kth.se This thesis treats block-oriented modelling, approximate linearization and control of a nonlinear pneumatic actuator system. The definition of the block-oriented nonlinear model is...

The article presents a construction, static testing and modelling of a single flapper nozzle pneumatic valve. Authors show testing of piezo tube PT230 which distinguishing feature is deflection in two directions. This testing is preliminary work in design of a novel electropneumatic valve. Studies have been performed on a special designed bench which consists of a pneumatic valve, which used pi...

This paper presents a novel method to fabricate a normally open micro pneumatic valve in rigid poly(methyl methacrylate) (PMMA) chips. The control and fluid substrates of the valve were prepared with PMMA sheets via hot embossing. After both control and fluid substrates were silanized with 3-aminopropyltriethoxysilane and treated with glow discharge plasma, each of them was irreversibly bonded ...

Accurate control of the PAM is a challenging task due to the nonlinear elasticity and the hysteresis losses in the actuator, the compressibility of air, and the nonlinearities in the pneumatic system. A novel implementation of a self-organizing fuzzy controller (SOFC) for the position and force control of a single PAM is proposed in this work. The performance of the controller is experimentally...

Prognostics technologies determine the health (or damage) state of a component or subsystem, and make end of life (EOL) and remaining useful life (RUL) predictions. Such information enables system operators to make informed maintenance decisions and streamline operational and mission-level activities. We develop a model-based prognostics methodology for pneumatic valves used in ground support e...

The electromagnet pneumatic proportional servo valve is widely used in industrial automation, medical equipment, scientific composition detectors, and other fields that require precise adjustment of high-pressure air flow due to its simple working structure, large output power, frequency response, good control performance. However, the pressure small, making it vulnerable impact external enviro...