... distributed computer control.
DDC See direct digital control.
digital control system A control system where the controller is a digital circuit, typ-
ically a computer.
direct digital control An approach ... three
controllers)
Local
process 2
Local
process 3
(c) Distributed computer control using local controllers
Local
process 1
Controller Controller Controller
Local
process 2
L...
... Compliance with SCAQMD Rule 1118
Table 4-5 Control Technology Options for Flares
Table 5-1 Emission Inventory for Equipment Leaks
Table 5-2 Control Technology Options for Fugitive Equipment ... Regulations
Table 6-3 Summary of Other State Regulations
Table 6-4 Control Technology Options for Wastewater Treatment
Assessment of Control Technology Options for Petroleum Ref...
... EPA-452/F-03-005
Air Pollution Control Technology
Fact Sheet
EPA-CICA Fact Sheet Cyclones
1
Name of Technology: Cyclones
This type of technology is a part of the group of air pollution controls collectively ... smaller units controlling a waste stream with a low PM concentration will be more expensive (per unit
volumetric flow rate and per quantity of pollutant controlled) than a larg...
... varied by the controller so as to affect the value of
the controlled variable. Normally, the controlled variable is the output of the system.
Control
means measuring the value of the controlled ...
-+
Closed-Loop Control Systems.
Feedback control systems are often referred to
as
closed-loop control
systems. In practice, the terms feedback control and closed-loop
control ar...