Webinars on Optimization Applications
APM User's Group Webinars are held every two-weeks at 8 AM Mountain Time / 9 AM Central Time (USA). Seminars consist of applications and tutorials using APM in modeling, estimation, and control applications.
Past Presentations and Future Schedule
To participate in an upcoming presentation, click register and provide your name and e-mail address. Log-on information is used to communicate log-on information and a reminder notice just prior to the meeting. There is no charge to register for a webinar. Users can participate via audio or video conference through a telephone or internet connection.
| Topic | Registration | Date | Time | Presenter | Description |
| Friction Stir Welding | Presentation | November 15, 2011 | 8AM MST | Dustin Marshall | Friction Stir Welding (FSW) temperature control is important to achieve uniform and consistent weld properties. This application is using a PDAE model for estimation and control. The model validation, control, and experimental data testing are discussed. |
| Virus and Biological Modeling | Presentation | November 29, 2011 | 8AM MST | Casey Abbott | Large scale biological models are important to gain an understanding of complex pathways to improve treatments such as anti-viral application. Simulated clinical trial data is aligned to an available model of HIV infection. |
| Dynamic Energy Storage | Presentation | December 13, 2011 | 8AM MST | Kody Powell, UT Austin | Dynamic thermal energy storage with weather forecasting has the potential to improve solar energy capture by up to 64%. Results from a recent study are discussed to demonstrate the benefits of dynamic optimization. |
| Aerial Vehicle Control for Drogue Following | Presentation | January 17, 2012 | 8AM MST | Solomon Sun | Path optimization of an Unmanned Aerial Vehicle (UAV) becomes more challenging with select constraints. Application of a UAV application is discussed from the MAGICC Lab group at BYU. |
| Solid Oxide Fuel Cell Modeling and Control | Presentation | January 24, 2012 | 10AM MST | Lee Jacobsen | Solid Oxide Fuel Cells (SOFCs) can be damaged by load changes that shorten life through delamination and micro-cracking. Application of SOFCs in load following applications is discussed to improve lifecycle costs. |
| Nonlinear Programming with APM Python | Presentation | February 7, 2012 | 8AM MST | John Hedengren | The APM interface extends Python to be used a variety of optimization applications. Dynamic optimization programming applications are demonstrated with Python. |
| Nonlinear Programming with APM MATLAB | Presentation | February 21, 2012 | 8AM MST | John Hedengren | The APM interface extends MATLAB to be used for parameter estimation, nonlinear control, and optimization. Participants can download a few example applications to run prior to the meeting that will be covered as part of the tutorial. |
| Thermal Oxidizer Boundary Value Management | Register | March 6, 2012 | 10AM MST | Reza Asgharzadeh | Thermal oxidizers are used in chemical plants and refineries to combust waste streams with low concentrations of reactants. The design and operation of the thermal oxidizer is of crucial importance for safety, environmental, and economic reasons. |
| Optimal Boiler Control | Register | March 20, 2012 | 10AM MST | Jose Mojica | Load following in power generation is a recent opportunity as time of day pricing and cogeneration are adopted in refining, chemical, and power plants. This work is to improve the load following capabilities of natural gas and coal-fired boilers. |
| Optimization of Design Under Uncertainty | Register | May 1, 2012 | 10AM MST | Casey Abbott | Process design has a number of unknown or uncertain parameters that influence the optimal design, desired operational conditions, and project profitability. Optimization of design maximizes the expected NPV (Net Present Value) considering uncertain design parameters. |
E-mail Discussion Forum
APMonitor User's Group is a discussion forum for new and experienced users of optimization and control software. It is dedicated to sharing user experiences and submitting feature requests. First time users are encouraged to work through a few tutorial examples. APMonitor is designed with minimal overhead syntax so that constraints, variables, equations, and data structures are a natural expression of the actual problem. This allows the user to focus more on their problem and less on the language.
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Software for differential algebraic systems
Experienced AIMMS, AMPL, or GAMS users will likely find the modeling language easy to learn. These tools are for solving Mixed Integer Nonlinear Programming (MINLP) problems. There are a number of software tools that can solve differential and algebraic equations (DAEs). These include gProms, MATLAB, Modellica, and others. A comparison of a gravity drained water tank model is used a benchmark for these modeling languages. These software tools are very good at providing a flexible environment for DAE simulation. New users are generally impressed by the similarity to their native environments, the open-equation format, and performance gains for large-scale model simulation and optimization.
There are a number of places to get additional information about APMonitor. There is the web-site at http://apmonitor.com. Some example problems are posted to the introductory page for the web-based trial. For those who want a quick start trial with the software, the easiest way is to submit a model at the on-line interface. Selecting the "Instructions" link will lead you to the tutorial examples for new users.
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