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New Modern Advanced Control Implementation

Modern Advanced Process Control Implementation and PID Tuning Optimization inside the DCS or PLC ABSTRACT Application of closed-loop advanced control in industry has rapidly increased since the 1990s.The terms “DCS”, “PLC”, “PID”, “APC”, “Computer Control”, “Process Optimization”, “MPC”, “Model-Based Control” etc. are ubiquitous in process control literature. A prerequisite for APC/MPC success is a well-designed […]
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9 Min Read

DCS-based Production Maximizers using Closed-Loop Identification and Optimization Technology

INSTALL PRODUCTION RATE MAXIMIZERS IN CHEMICAL PLANTS IN TWO WEEKS USING MODERN ADVANCED CONTROL TECHNIQUES Maximizing production rates and minimizing utilities is a common goal in most chemical plants. This paper shows how to implement a DCS-resident production rate maximizer with minimal effort and in a remarkably short time. Several novel advanced control techniques required […]
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9 Min Read

Level Controller Tuning Using Novel PID Tuning Optimization Methodology

S. Howes, I. Mohler, N. Bolf PiControl Solutions, Houston, TX, USA, e-mail: [email protected] Faculty of Chemical Engineering and Technology, University of Zagreb, Savska c. 16/5a, 10 000 Zagreb, Croatia, emails: [email protected], [email protected] Abstract Thispaperillustrates a novel, modern and practical method for tuninglevelPID controllers (LCs). The example is based on a distillation column sump.The new PID […]
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6 Min Read

Online Oscillation Detection

ONLINE OSCILLATION DETECTION AND ADAPTIVE CONTROL IN CHEMICAL PLANTS Introduction Fast and reliable detection of critical signals is important in many chemical processes. Changes in operating conditions, feedstock, product grades, production rates can induce nonlinearities in the process and can initiate feedback controllers to oscillate. Once oscillations creep in just one or a few loops, […]
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6 Min Read

Production Rate Control & Maximization

PiControl Solutions can show you novel powerful techniques to maximize your plant production rate and increase profits. An entire production rate controller can be designed and implemented directly inside the existing DCS or PLC. PiControl Solutions’s Pitops-TFI module identifies process dynamics precisely based on real plant data and then the Pitops-Control Simulator will calculate and […]
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2 Min Read

Pitops System Identification and PID Tuning Simulation Optimization

A New Process Control Technological Breakthrough Impacting Industry and Colleges PID Tuning, APC (Advanced Process Control) Design, System Identification See the PDF with a few slides illustrating Identification of system dynamics (transfer functions) using closed-loop short-duration data amidst noise and unmeasured disturbances Optimization of PID tuning for Slave PIDs, Cascade PIDs and all complex PIDs […]
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2 Min Read

Implementing Advanced Process Control for Refineries and Chemical Plants

In today’s globally competitive marketplace, chemical plants and refineries are looking at new ways to increase plant efficiency, production rates, safety and reliability. In the process control arena, base-level PID tuning optimization, APC (Advanced Process Control) and MPC (Model Predictive Control) remain attractive and under-utilized options. This paper describes various new and novel ideas harnessing […]
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16 Min Read

Adaptive Advanced Control in DCS or PLC

Advanced Process Control in Chemical Plants Advanced Process Control (APC) is now commonly used in most chemical plants. APC consists of math and logic algorithms that reside in a DCS or PLC or on a host computer. These algorithms monitor process variables and move the plant towards the direction of increasing profit. Benefits of APC […]
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9 Min Read

Introduction to PITOPS

Pitops is abbreviation for Process Identification and Controller Tuning Optimizer Simulator. It is aimed at developing and commissioning supervisory and advanced control strategies in the DCS or PLC. Furthermore, Pitops tunes all PIDs from millisecond time frame to several hours of time constant – single/slave, cascade and constraint over-ride types. Pitops was created by a […]
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5 Min Read

Process Control Vision

Solutions to New Challenges for the Chemical Process Control Industry The DCS (distributed control system) is now controlling almost each and every chemical plant and refinery all over the world. The rapid growth and modernization of industrial process control software and hardware has generated an explosive growth in the field of advanced process control. A […]
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3 Min Read

PID Opportunities

PID Control Opportunities Even in recent times, we find huge savings and other benefits opportunities by implementing various PID control schemes directly inside the DCS or PLC. Many view the PID as a simple, age-old algorithm but do not use it to the fullest potential inside the DCS. We will show you novel, innovative techniques […]
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2 Min Read

PiControl Technology

PiControl Company is a technology-development company. We develop cutting edge new ideas and then convert them into process control software products. Following are some of our novel and breakthrough innovations, all developed in-house from pure mathematics and process-control fundamentals. Closed Loop multivariable process dynamics identification in the time domain using short duration data. This technological […]
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2 Min Read

Step-Less Closed Loop Multivariable Transfer Function System Identification

System identification is an important area in process control and statistics. Identification of transfer function parameters provides significant benefits for research and in the design of closed-loop control systems. Despite over six decades of research and applications of system identification, only a handful of methods are currently available. Most current methods are somewhat complex and […]
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13 Min Read

Step-Less Closed Loop Multivariable Transfer Function System Identification- The SLIC-ID Algorithm

Step-Less Closed Loop Multivariable Transfer Function System Identification System identification is an important area in process control and statistics. Identification of transfer function parameters provides significant benefits for research and in the design of closed-loop control systems. Despite over six decades of research and applications of system identification, only a handful of methods are currently […]
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13 Min Read

New Technology for Closed-Loop System Identification, PID Control Loop Optimization and Advanced Process Control

J. Lepore and S. Howes PiControl Solutions LLC, Texas, USA (e-mail: [email protected]). Abstract: Ability to identify open-loop transfer functions using normal process data from a running plant is immensely useful. Open-loop transfer functions help to optimize PID tuning precisely, implement Advanced Process Control (APC) inside the plant’s DCS or PLC, improve Model Predictive Control (MPC-DMC/RMPCT) […]
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10 Min Read

Introduction to SIMCET

PID Tuning Certification and Primary Process Control Duration: 2 Days Classroom or 15 hours OnlineAudience: DCS Technicians, Plant Operators, Instrument Engineers, ProcessEngineers and Process Control Engineers.Prerequisites: Control room experience as technician, operator or engineer is desirable,but not required.Course Material: Software Products used in Course – Pitops, Simcet and Training Slides. Course Description This course addresses needs of control room […]
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3 Min Read

Real-time dynamic process control loop identification, tuning and optimization software

S. Howes*, I. Mohler, N. Bolf * PiControl Solutions LLC, Texas, USA (e-mail: [email protected]).** University of Zagreb, Faculty of Chemical Engineering and Technology, Croatia (e-mail: [email protected], [email protected]) In today’s globally competitive marketplace, industrial plants are looking at new ways to increase plant efficiency, production rates, safety and reliability. Engineer education, training and plant optimization play […]
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10 Min Read

Multivariable Stepless Closed-Loop Technology for Model Predictive Control (MPC)

Steve Howes & Ivan Mohler, Houston, Texas-USA,  [email protected], [email protected] ABSTRACT Model Predictive Controllers (MPC) are widely used in chemical, petrochemical, paper, power plant and oil refining industries.  The shapes of the MPC models are the heart and soul of the MPC system.  With time, due to aging equipment, hardware changes, changes in process, operating and […]
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20 Min Read
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