A New Technique In Drive And Control Circuits For Power Electronic Systems

1987 ◽  
Author(s):  
Fernando Yeves ◽  
Julio delValle ◽  
Juan Peire ◽  
Fernando Aldana
Keyword(s):  
New Technique ◽  
Electronic Systems ◽  
Power Electronic ◽  
Control Circuits ◽  
A New Technique ◽  
Drive And Control ◽  
And Control

Mathematical Modeling of Pneumatic Pipes in a Simulation of Heterogeneous Engineering Systems

2011 ◽  
Vol 133 (12) ◽  
Author(s):  
Zbigniew Kamiński
Keyword(s):  
Stokes Equations ◽  
Navier Stokes ◽  
Engineering Systems ◽  
Test Results ◽  
Navier Stokes Equations ◽  
Kolmogorov Smirnov ◽  
Complex Fluid ◽  
Control Circuits ◽  
Drive And Control ◽  
And Control

Pipes are widely used in hydraulic and pneumatic subsystems for transferring energy or signals. Accurate prediction of pressure transients is very important in the drive and control circuits of complex fluid-line systems. Based on the approximation of Navier-Stokes equations for one-dimensional flow, a mathematical model of the pneumatic pipe with lumped parameters was developed using ordinary differential equations, which can be easily implemented in most computer programs for the simulation of complex heterogeneous engineering systems. Implemented in Matlab-Simulink software, the computer model of the pipe makes it possible to determine the influence of capacitance, inertance, resistance and heat exchange on the dynamic characteristics of the control and power circuits of pneumatic systems. An advantage of the model is that various functions can be selected to describe linear resistances and local resistances are taken into account, particularly at the inlet and outlet. Such resistances largely affect flow resistances in short tubes (up to 10 m) that can be found, e.g., in pneumatic brake systems of road vehicles. Confirmed by Kolmogorov-Smirnov test results, the consistency of the pressure curves obtained in experimental and simulation tests proves the implemented tube model to be useful for the calculations of pneumatic system dynamics.

Secure Communications Based on Variable Topology of Chaotic Circuits

1997 ◽  
Vol 07 (12) ◽  
pp. 2861-2869 ◽  
Author(s):  
Alexander A. Alexeyev ◽  
Michael M. Green
Keyword(s):  
Digital Control ◽  
Chaotic Systems ◽  
New Technique ◽  
Secure Communications ◽  
Variable Topology ◽  
Chaotic Circuits ◽  
Control Circuits ◽  
A New Technique

A new technique for synchronization of chaotic circuits is proposed. This technique, based on varying a circuit's overall topology rather than varying a set of continuous parameters, offers a possible resolution to the tradeoff between security and synchronizability inherent in existing chaotic systems. The encryption key is represented by a mapping from a set of nodes to a set of switches in the circuit. This method significantly improves reliability and can be easily interfaced to digital control circuits.

scholarly journals Advanced Perspectives for Modeling Simulation and Control of Power Electronic Systems

Energies ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 8108
Author(s):  
Michal Frivaldsky
Keyword(s):  
Electronic Systems ◽  
Power Electronic ◽  
Modeling Simulation ◽  
Simulation And Control ◽  
And Control

Power electronic systems have become a major issue related to advancements in consumer and industrial electronics [...]

Picosecond Imaging Circuit Analysis of the IBM G6 Microprocessor Cache

1999 ◽  
Author(s):  
Moyra McManus ◽  
Pia Sanda ◽  
Steven Steen ◽  
Dan Knebel ◽  
Dennis Manzer ◽  
...  
Keyword(s):  
Circuit Analysis ◽  
Vlsi Circuits ◽  
New Technique ◽  
High Frequencies ◽  
Early Design ◽  
Race Condition ◽  
Self Test ◽  
Built In Self Test ◽  
Control Circuits ◽  
A New Technique

Abstract Picosecond Imaging Circuit Analysis (PICA) is a new technique shown here to be applicable to the analysis of complex VLSI circuits. PICA was used to diagnose a timing failure in the early design of the G6 microprocessor chip. The fault occurred at high frequencies upon consecutive writes. Using PICA, combined with programmable array built-in self test (RAMBIST) techniques, the problem was traced to a race condition in the write control circuits. This allowed timely correction of the design for product implementation.

Doping glow-discharge amorphous silicon by metal coevaporation

1987 ◽  
Vol 65 (8) ◽  
pp. 1027-1029 ◽  
Author(s):  
G. Perluzzo ◽  
C. Aktik ◽  
J. F. Currie ◽  
S. Poulin-Dandurand ◽  
A. Yelon ◽  
...  
Keyword(s):  
Glow Discharge ◽  
Amorphous Silicon ◽  
Mass Spectroscopy ◽  
Thermal Evaporation ◽  
New Technique ◽  
A New Technique ◽  
And Control ◽  
Further Development ◽  
Monitor And Control

We report here on the further development of a new technique for doping plasma-deposited amorphous silicon by thermal evaporation of metal into the plasma from which the film is grown. We show that the de bias applied to the substrate has an important effect on the incorporation of the metal into the film, and on the doping efficiency. We also report on our efforts to monitor and control the evaporation by mass spectroscopy.

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