... in this work In this paper, an EKF based controller is proposed to achieve good flow control of the supersonic blowdown wind tunnel system. One distinctive advantage of our approach is that it can accommodate to different operating conditions of the wind tunnel (e.g., different initial conditions...

..., but its applications are limited by some factors. hydraulic circuit single rod cylinder mode switching flow control Fluid power technology is widely used in many areas of industrial and mobile applications. Common to these applications is high power density, ability to exert large forces...

... control flow control periodic reference tracking The disturbance rejection and reference tracking problem of periodic signals is encountered in many engineering systems. As such, there has been extensive research on repetitive control documented in the literature over a wide range...

..., where hydrogen grade plumbing is required. However, the techniques outlined in this paper are not unique to the anode side liquid distribution, and one could perform the same analysis for the cathode. channel flow controllability difference equations diffusion electrochemical electrodes...

... 25 05 2010 16 08 2010 16 08 2010 flow control mechatronics pneumatic systems servomechanisms valves pneumatics proportional valves solenoid mechatronic model experimental analysis In fluid servosystems, the device that regulates hydraulic or pneumatic fluid...

.... Results from several experiments are presented and compared. 23 10 2007 23 07 2009 09 11 2009 09 11 2009 actuators flow control intelligent materials nonlinear control systems position control Over the past 20 years, research in the field of miniature actuators has...

... channel flow flow control flow instability hypersonic flow Navier-Stokes equations Poisson equation state feedback Streamwise equilibrium velocity U e ( y ) (left) and U y e ( y ) (right) for different values of H . Solid, H = 0 ; dash-dotted...

.... Launch vehicles usually see the lateral and pitching excitations while in motion. Though the concepts developed are applicable in other areas, the focus of this paper is more on slosh occurring in launch vehicles. control system synthesis design engineering flow control mechatronics sloshing...

... 2008 boundary layers control system synthesis feedback flow flow control Navier-Stokes equations nonlinear control systems open loop systems Boundary flow control has received significant research attention during the last decades. Most flow applications modeled by Burgers...

... . 4 Find the smallest L 2 -gain, say, η 0 , and its corresponding controller u 0 . 24 03 2007 03 07 2008 05 12 2008 bifurcation compressors engines feedback flow control Lyapunov methods robust control robustness bifurcation...

... a feedback control problem of the Mach number in a wind tunnel. Gunzburger describes a boundary control problem involving Navier-Stokes flow ( 7 ). For a real-time control implementation, however, Navier-Stokes problems are still computationally expensive and therefore rarely used in practical flow control...

... jets power transmission (mechanical) design engineering flow control distributed control mechanical engineering computing neural nets spool valve fluid control systems discharge coefficient jet angle variable force solenoid (VFS) gray box nondimensional artificial neural network...

.... These elements are used to better model mechatronic systems that have embedded energy sources. A procedure for passifying mechatronic systems is then developed using the four-way directional electrohydraulic flow control valve as an example. The passified valve is a two-port system that is passive with respect...

... combustion engines fuel systems fuel optimal control parameter estimation closed loop systems feedforward feedback control system synthesis flow control Owing to stringent governmental automobile emission regulations, the precise control of engine fueling has received considerable attention...

...D. Wu; R. Burton; G. Schoenau; D. Bitner A pressure-compensated valve (PC valve) is a type of flow control device that is a combination of a control orifice and a compensator (often called a hydrostat). The compensator orifice modulates its opening to maintain a constant pressure drop across...

.... Associate Editor, A. Alleyne. 01 February 2002 06 November 2002 18 09 2003 pumps flow control geometry fast Fourier transforms Hydraulic pumps are the power-supplying components within hydraulic circuitry. All pumps used in hydrostatic pressure systems...

... , T. , and Beard , R. , 2001 , “ Application of an Optimal Control Strategy to an Electro-Hydraulic Positioning System ,” ASME J. Dyn. Syst., Meas., Control , 123 , pp. 377 – 384 . Li , P. , 2002 , “ Dynamic Redesign of a Flow Control Servovalve Using a Pressure Control Pilot...

... to Delay or Advance Linear Loss of Stability in Planar Poiseuille Flow, Proc. R. Soc. London A, 447 , pp. 299–312), a linear stability analysis of such a feedback control is developed in this paper. The Poiseuille flow control problem is reduced to a modified Orr-Sommerfeld equation coupled with a heat...

... inertia. Experiments have been conducted to verify the effectiveness of the model developed. packaging materials handling flow control valves pneumatic control equipment The conventional methods of manufacturing electronic assemblies, in which the electronic components are mounted through...

...Randall T. Anderson; Perry Y. Li A nonlinear dynamic model for an unconventional, commercially available electrohydraulic flow control servovalve is presented. The two stage valve differs from the conventional servovalve design in that: it uses a pressure control pilot stage; the boost stage uses...