Introduction of In-House Products
What is Multivariable Control?
In process feedback control, executing control while handling two or more signals simultaneously is called multivariable control.
Necessity and Benefits of Multivariable Control
In complex systems, single-point control using only a main signal (such as a temperature signal) often fails to satisfy system responsiveness or stability. In such cases, production efficiency (costs) for the product (equipment) suffers, resulting in significant production losses.
On the other hand, multivariable control primarily captures the main signal while also monitoring other related signals, altering control actions as needed. This ensures that system responsiveness and stability requirements are met, thereby improving the production efficiency (cost) of the product (equipment).
Multivariable Controller SuperG Series
The Ethernet-based SuperG exchanges information with various PLC (remote I/O) and other devices via diverse Ethernet communications to realize multivariable control.
Features of the SuperG Series
Extensive Calculation Functions
Addition, subtraction, multiplication, division, absolute value, first-order lag filter, limiter, high limit alarm, low limit alarm, comparison, logical conjunction (AND), logical disjunction (OR), XOR operation, logical negation (NOT), function generator, rate of change, incomplete differentiation, moving average, time timer, selection, accumulation, linear change, rate-of-change limiter, time delay, trigger signal processing, minimum/maximum calculation, exponential function, broken-line function, high-precision (32-bit) calculation, least squares, table calculation, PID calculation, fuzzy PID calculation, if-then inference, calculation flow control function.
Abundant Communication Functions
1) Equipped with international standard communication features: EtherNet/IP, ProfiNet/IO (optional).
2) Equipped with general communication features: Melsec MC protocol communication, ModBus-RTU-TCP, etc.
3) Optional communication features: Various RS-232C and RS-485 communications.
Resilient to Unstable Environments such as Disturbances
SuperG is an optimal multivariable controller for building disturbance and interference rejection systems. By introducing fuzzy logic (rule-based reasoning) on PID control(Named FuzzyPID), it dynamically adjusts PID parameters at every control cycle while achieving seamless control output (MV). This enables a prompt response to disturbances and interference, stabilizing the intended control performance even in adverse environments, which leads to energy savings and lower production costs.
In addition to this rule-based PID control, SuperG supports a wide variety of control methods, including pure fuzzy control and multi-loop PID control.
Wide Range of Application Fields
SuperG has been widely adopted and highly praised by customers across a diverse range of applications:
1) Waste incineration plant combustion control systems
2) Sewage sludge incineration plant combustion control systems
3) Temperature, pressure, and level control
4) pH control
5) Automated crane control
Introduction of Multivariable Control Examples
- Sludge incineration plant combustion control system
- Stable control of humidity and temperature in automobile painting booths
- Stable and low-cost control of alkaline washing towers <Achieved 40% approx. cost reduction>
- pH control of industrial wastewater <Achieved 50% approx. power savings>
- Municipal waste incineration plant combustion control system
- Overhead automatic crane control system
- Stable control of liquid level in wall material manufacturing
- Stable control of TD liquid level
- Cooling water chemical injection control for steel hot-rolling mill heating furnaces (for China)
If you require further information regarding the above cases, please contact us via the inquiry form.
Engineering Tool for Multivariable Controllers (IconView)
Our multivariable controllers are programmable controllers, and we provide an entirely in-house developed tool called as the engineering tool necessary for programming. Its features include:
- Adoption of FBD (Function Block Diagram) Programming Method and Abundant Calculation Functions: Complex programs can be easily constructed.
- On-Field Oriented Functions: IconView features an easy-to-use trend display function that allows long-term data information to be easily displayed in real-time, with arbitrary data storable over the long term. Various parameters can be changed even while system control is running. Therefore, IconView is a highly efficient tool for on-field adjustment (test runs), especially for process control tuning.
With a powerful engineering tool named IconView, it is easy to build a multi-variable control system with FBD programming method.
A simple and convenient rule edit screen.
(No mathematical knowledge is required for rule edit)
Introduction of System Project Examples
At AGS Co., Ltd., we make maximum use of the abundant hardware and software technical expertise and know-how cultivated through our own product development, applying them to various measurement and automatic control systems as well as embedded equipment systems to develop diverse system projects together with our customers. Our strengths are:
- Hands-On Support: We work together with our customers not only on system construction but through every process up to operation. We continue to thoroughly make improvements until the system functions properly, pursuing reliable results.
2. Detailed Specification Creation: We carefully listen to your needs and, based on specific requirements, maximize our technical expertise and know-how to create proposal specifications that offer the optimal solution for you. This allows you to place orders with peace of mind after fully understanding and agreeing to the proposal.
Main Examples (In No Particular Order)
- Tower crane remote control system (TawaRemo)
- Measurement and control system for fuel cell evaluation equipment
- Measurement and control system for water electrolysis evaluation equipment
- LiDAR-based waste height 3D measurement system
- multiScan (LiDAR) obstacle recognition system
- Robot remote operation system via high-speed cloud communication
- Smart data collection and monitoring system (SDCS)
- Industrial wastewater monitoring report creation system
- Real-time GPS positioning system
- FFT analysis of shield machine vibration data
- Compact data collection system (CDCS)
- Thermal image processing for automated White-Wine (Chinese liquor) ingredient spreading (for China)
- Communication measurement and control for dam water quality conservation aeration equipment
If you require further information regarding the above cases, please contact us via the inquiry form.