scholarly journals Using Spice Circuit Simulation Program in Reliability Analysis of Redundant Systems with Non-Repairable Units and Common-Cause Failures

2000 ◽  
Vol 22 (4) ◽  
pp. 235-255 ◽  
Author(s):  
Muhammad Taher Abuelma'atti ◽  
Isa Salman Qamber
Keyword(s):  
Integrated Circuit ◽  
Markov Models ◽  
Circuit Simulation ◽  
Simulation Program ◽  
Time To Failure ◽  
Transform Method ◽  
Common Cause ◽  
The Laplace Transform ◽  
Common Cause Failures ◽  
Redundant Systems

The effectiveness of Simulation Program with Integrated Circuit Emphasis (SPICE) in calculating probabilities, reliability, steady-state availability and mean-time to failure of redundant systems with non-repairable units and common-cause failures described by Markov models is demonstrated. General equations and procedure for constructing the equivalent circuit forNparallel units are presented. Results obtained, forN=1,2,3, using SPICE are compared with previously published results obtained using the Laplace transform method. Full SPICE listings are included.

scholarly journals Reliability and Availability Analysis of Some Systems with Common-Cause Failures Using SPICE Circuit Simulation Program

1999 ◽  
Vol 22 (1) ◽  
pp. 31-49 ◽  
Author(s):  
Muhammad Taher Abuelma'atti ◽  
Isa Salman Qamber
Keyword(s):  
Markov Models ◽  
Circuit Simulation ◽  
Simulation Program ◽  
Time To Failure ◽  
Repairable Systems ◽  
Transform Method ◽  
Common Cause ◽  
Availability Analysis ◽  
The Laplace Transform ◽  
Common Cause Failures

The effectiveness of SPICE circuit simulation program in calculating probabilities, reliability, steady-state availability and mean-time to failure of repairable systems described by Markov models is demonstrated. Two examples are presented. The first example is a warm standby system with common-cause failures and human errors. The second example is a non-identical unit parallel system with common-cause failures. In both cases recourse to numerical solution is inevitable to obtain the Laplace transforms of the probabilities. Results obtained using SPICE are compared with previously published results obtained using the Laplace transform method. Full SPICE listings are included.

Amorphous Silicon Three Color Detector

1995 ◽  
Vol 377 ◽  
Author(s):  
H. Stiebig ◽  
J. Giehl ◽  
D. Knipp ◽  
P. Rieve ◽  
M. Böhm
Keyword(s):  
Amorphous Silicon ◽  
Analytical Model ◽  
Integrated Circuit ◽  
Dynamic Range ◽  
Circuit Simulation ◽  
Spectral Response ◽  
Simulation Program ◽  
Response Curves ◽  
Pool Model ◽  
Color Sensors

ABSTRACTBand gap and defect engineered amorphous silicon based nipin photo diodes with bias controlled spectral response have been fabricated successfully. The devices exhibit good linearity over a wide illumination range and linearly independent spectral response curves which are required to generate a standard RGB-signal. In the bias range from -1.5 V to 1.5 V a dynamic range exceeding 90 dB for two color sensors and 80 dB for three color sensors has been observed. The general operation principle of the multispectral photo diode is discussed using a numerical simulation program. The model describes the defect state distribution of dangling bonds according to the defect-pool model and uses coherent wave propagation in the device to calculate the profile of photo generated carriers. Additionally, an analytical model has been developed to be included into standard circuit simulation programs like SPICE (Simulation Program with Integrated Circuit Emphasis). The analytical model uses linear field approximations in both i-layers of the device.

Dynamic Rate Effects on Timoshenko Beam Response

1985 ◽  
Vol 52 (2) ◽  
pp. 439-445 ◽  
Author(s):  
T. J. Ross
Keyword(s):  
Timoshenko Beam ◽  
Bending Moment ◽  
Laplace Transform Method ◽  
Transform Method ◽  
Rate Effects ◽  
The Laplace Transform ◽  
Step Loading ◽  
Fixed End ◽  
Constitutive Formulation ◽  
Viscoelastic Timoshenko Beam

The problem of a viscoelastic Timoshenko beam subjected to a transversely applied step-loading is solved using the Laplace transform method. It is established that the support shear force is amplified more than the support bending moment for a fixed-end beam when strain rate influences are accounted for implicitly in the viscoelastic constitutive formulation.

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