You are here: Industries >> Building Control
 
     
 
 Overview
 Building Control
 Oil & Gas
 Chemical & Refining
 Steel & Metal
 Food Processing
 Power & Utilities
 Space & Aerospace
 Semiconductor
 Forest Products
 Pharmaceutical & Biotech
 Materials & Others
 
 

Model-Free Adaptive Control for Building Control Industry

Air Handling Unit
Zone Control
MFA Benefits
A special MFA controller delivers a fully coordinated split-range adaptive temperature control system. This MFA is able to manipulate damper, heating, or cooling to tightly control supply air (SA) temperature. Highly robust and adaptive, the MFA can handle the control problems caused by changes in operating modes, seasons, loads, and environment. Once installed, no manual tuning is required. Standard MFA can tightly control Mixed Air Temp, humidity, flow, and pressure loops.
Using MFA, zone temperature can be tightly controlled even when there are large variations in load, coupling factors in multiple zones, process nonlinearity caused by wrong actuator sizing, changing seasons and environment.
Lab Control
MFA controllers are ideal to provide tight control of all critical variables for semiconductor HVAC systems, clean rooms, pharmaceutical and industrial laboratories and any environment that must be stringently controlled.
• Easy startup and elimination of manual tuning of controllers saves technician time and expense,
• Better control with no oscillation yields energy savings,
• Reduced wear and tear on actuators lengthens equipment life,
• Tighter control increases user comfort levels and allows Building Control suppliers to address more stringent user demands, and
• Direct PID replacement with easily embedded MFAs.

The Inside of Model-Free Adaptive (MFA) Control

MFA Features
Key Points
Description
MFA Inside Story
Controls complex systems Adaptive
Adaptive weighting factors are updated in every sample interval to minimize error e(t).
Requires no precise process models Robust
Provides a wider robust range than PID and many other controllers.
Requires no process identification Speed
No time consuming model training; controls process immediately.
Requires no controller design Stability
Guarantees closed-loop stability for passive processes.
Requires no complicated manual tuning Ease of Use
Easy to configure, launch, and maintain.

Item
PID
Model-Based
MFA Control
General purpose
Yes
No
Yes
Needs Models
No
Yes
No
Needs controller design
No
Yes
No
Manual tuning
Yes
No
No
Controls complex systems
No
Yes
Yes

Left: When MFA (top) and PID (bottom) start from the same oscillating control condition, PID will continue to oscillate while the MFA will quickly adapt to an excellent control condition.

 
     
  © 2014 CyboSoft, General Cybernation Group, Inc.
Home | Search | Site Map | Legal | Contact Us