A dual-pulse method for modeling processes with large time constants

1987 ◽  
Vol 26 (12) ◽  
pp. 2498-2501 ◽  
Author(s):  
Kannan M. Moudgalya ◽  
William L. Luyben ◽  
Christos Georgakis
Keyword(s):  
Large Time ◽  
Pulse Method ◽  
Modeling Processes ◽  
Time Constants

A Low-Frequency Filter in Inertial Applications

2015 ◽  
Vol 645-646 ◽  
pp. 875-880
Author(s):  
Qiang Li ◽  
Xiao Wei Liu ◽  
Liang Yin ◽  
Jia Jun Zhou
Keyword(s):  
Large Time ◽  
Cutoff Frequency ◽  
Low Frequency ◽  
Frequency Filter ◽  
Time Constants ◽  
Operational Transconductance Amplifiers ◽  
Technical Requirements ◽  
Low Pass ◽  
Transconductance Amplifiers ◽  
Current Shunt

A fourth-order cascade low-pass transconductance capacitor filter is designed, and the coefficients of the filter are calculated. For the implementation of large-time constants the current shunt technique and the current cancellation technique are employed in the operational transconductance amplifiers. The whole filter is simulated in Hspice, the the cutoff frequency is 150.2Hz and the THD of the filter is 65dB, which meet the technical requirements of the inertial applications.

Tracer Gas Measurement of Airflow Rates in Spaces with Several Air-Handling Units, Recirculation, or Large Time Constants

2006 ◽  
Vol 12 (3) ◽  
pp. 477-496 ◽  
Author(s):  
C. -A. Roulet ◽  
M. S. Zuraimi ◽  
S. C. Sekhar ◽  
K. W. Tham
Keyword(s):  
Large Time ◽  
Tracer Gas ◽  
Time Constants ◽  
Air Handling Units ◽  
Gas Measurement

Full integration of extremely large time constants in CMOS

1991 ◽  
Vol 27 (10) ◽  
pp. 790-791 ◽  
Author(s):  
M. Steyaert ◽  
P. Kinget ◽  
W. Sansen ◽  
J. van der Spiegel
Keyword(s):  
Large Time ◽  
Time Constants

A Low-Cost Control Experiment for Systems with Large Time Constants and Unknown Time Delays

1994 ◽  
Vol 31 (3) ◽  
pp. 252-263 ◽  
Author(s):  
M. García-Sanz ◽  
J. Flórez
Keyword(s):  
Time Delays ◽  
Large Time ◽  
Control Experiment ◽  
Cost Control ◽  
Low Cost ◽  
Heating System ◽  
Time Constants ◽  
Central Heating ◽  
Unknown Time Delays ◽  
Reduced Scale

A low-cost control experiment for systems with large time constants and unknown time delays A prototype that represents the thermal behaviour of a building modelled at reduced scale with a central heating system is described. It is a simple, robust experiment which can be used for a variety of control studies, especially those related with systems that present large time constants and unknown time delays.

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