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| = Building Controls Virtual Test Bed = ||<tablestyle="float:right;" bgcolor="#FFFFF0">[[ImageLink(ptolemyEPlusSimuMac.png, , width=500)]] [[BR]] '''~+Links+~'''[[BR]] [:Requirements:Functional Requirements] [[BR]] [:Applications:Simple application] for illustration [[BR]] ["Implementation"] [[BR]] [:Download:Download] [[BR]] ["Help"] || |
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| = Building Controls Virtual Test Bed = | This wiki describes the specification and the implementation of the Building Controls Virtual Test Bed (BCVTB). The BCVTB is based on the [http://ptolemy.berkeley.edu/ptolemyII/index.htm Ptolemy II] software environment. The BCVTB allows to couple different simulation programs for distributed simulation of control algorithms and of HVAC, CHP and refrigeration systems. |
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| The project goal is to construct a development environment for building control systems and demonstrate its value by developing and testing energy-oriented controls for selected applications. | Examples of such programs are [http://www.energyplus.gov EnergyPlus], [http://www.mathworks.com/products/simulink/ MATLAB/Simulink], a [http://www.modelica.org Modelica] simulation environment and a [http://www.bacnet.org/ BACnet] compliant Building Automation System (BAS). In addition to using programs that are coupled to Ptolemy II, Ptolemy II's graphical modeling environment can also be used to define system models for physical devices, communication systems or for post processing and real-time visualization. This coupling middleware allows non-expert !EnergyPlus users to extend !EnergyPlus' capabilities for controls simulation and for system simulation. |
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| This wiki describes the subtask in which we create the environment for [:ModularSimulation: modular simulation] that interfaces to building automation systems and that will serve as the development environment for building control systems. | Typical applications include: * performance assessment of integrated building energy and controls systems, * development of new controls algorithms, and * formal verification of controls algorithms prior to deployment in a building in order to reduce commissioning time. Examples are provided with the BCVTB that show how to do distributed simulation. In the examples, we linked the following programs to the BCVTB: * a development version of !EnergyPlus * MATLAB/Simulink * a simulation program implemented in C * a simulation program implemented in Fortran 90 The C and Fortran 90 simulation program are provided to show developers how to couple a new program to the BCVTB. Such a coupling can be done by calling two C functions that are provided as part of the BCVTB need to be called. The BCVTB also contains examples that show how control models can be implemented directly in Ptolemy II using Ptolemy II's graphical model editor. The control examples include a heterogeneous system consisting of a discrete time controller with a Finite State Machine. In future versions, we plan to couple a Modelica simulation environment for which we develop a model library for building energy systems (see https://gaia.lbl.gov/bir). This will allow advanced users to * define on the fly new HVAC components and systems in a modular, hierarchical, object-oriented, equation-based graphical modeling environment and couple them to !EnergyPlus, * innovate new HVAC system and control architectures for which models do not yet exist in off-the-shelve building simulation programs, and * analyze dynamic effects of HVAC systems, modeled in Modelica, and their local and supervisory control loops, modeled in MATLAB/Simulink, Modelica or Ptolemy. We will also couple a BACnet compliant Building Automation System to the BCVTB. This will allow testing supervisory control sequences using an !EnergyPlus model to assess the energy and comfort performance of different supervisory control algorithms. It will also allow formal verification of control sequences before deployment to a building. |
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| Philip Haves and [:MichaelWetter: Michael Wetter][[BR]] Lawrence Berkeley National Laboratory[[BR]] [http://btech.lbl.gov Building Technologies Department][[BR]] {PHaves, MWetter}@lbl.gov |
Philip Haves and [:MichaelWetter:Michael Wetter][[BR]] Lawrence Berkeley National Laboratory[[BR]] [http://btech.lbl.gov Building Technologies Department][[BR]] {PHaves, MWetter}@lbl.gov |
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| ---- == How to use this site == A Wiki is a collaborative site, anyone can contribute and share: * Edit any page by pressing '''[[GetText(Edit)]]''' at the top or the bottom of the page * Create a link to another page with joined capitalized words (like WikiSandBox) or with {{{["quoted words in brackets"]}}} * Search for page titles or text within pages using the search box at the top of any page * See HelpForBeginners to get you going, HelpContents for all help pages. To learn more about what a WikiWikiWeb is, read about MoinMoin:WhyWikiWorks and the MoinMoin:WikiNature. Also, consult the MoinMoin:WikiWikiWebFaq. This wiki is powered by MoinMoin DesktopEdition. |
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Building Controls Virtual Test Bed
ImageLink(ptolemyEPlusSimuMac.png, , width=500) BR LinksBR [:Requirements:Functional Requirements] BR [:Applications:Simple application] for illustration BR ["Implementation"] BR [:Download:Download] BR ["Help"] |
This wiki describes the specification and the implementation of the Building Controls Virtual Test Bed (BCVTB). The BCVTB is based on the [http://ptolemy.berkeley.edu/ptolemyII/index.htm Ptolemy II] software environment. The BCVTB allows to couple different simulation programs for distributed simulation of control algorithms and of HVAC, CHP and refrigeration systems.
Examples of such programs are [http://www.energyplus.gov EnergyPlus], [http://www.mathworks.com/products/simulink/ MATLAB/Simulink], a [http://www.modelica.org Modelica] simulation environment and a [http://www.bacnet.org/ BACnet] compliant Building Automation System (BAS). In addition to using programs that are coupled to Ptolemy II, Ptolemy II's graphical modeling environment can also be used to define system models for physical devices, communication systems or for post processing and real-time visualization. This coupling middleware allows non-expert EnergyPlus users to extend EnergyPlus' capabilities for controls simulation and for system simulation.
Typical applications include:
- performance assessment of integrated building energy and controls systems,
- development of new controls algorithms, and
- formal verification of controls algorithms prior to deployment in a building in order to reduce commissioning time.
Examples are provided with the BCVTB that show how to do distributed simulation. In the examples, we linked the following programs to the BCVTB:
a development version of EnergyPlus
- MATLAB/Simulink
- a simulation program implemented in C
- a simulation program implemented in Fortran 90
The C and Fortran 90 simulation program are provided to show developers how to couple a new program to the BCVTB. Such a coupling can be done by calling two C functions that are provided as part of the BCVTB need to be called. The BCVTB also contains examples that show how control models can be implemented directly in Ptolemy II using Ptolemy II's graphical model editor. The control examples include a heterogeneous system consisting of a discrete time controller with a Finite State Machine.
In future versions, we plan to couple a Modelica simulation environment for which we develop a model library for building energy systems (see https://gaia.lbl.gov/bir). This will allow advanced users to
define on the fly new HVAC components and systems in a modular, hierarchical, object-oriented, equation-based graphical modeling environment and couple them to EnergyPlus,
- innovate new HVAC system and control architectures for which models do not yet exist in off-the-shelve building simulation programs, and
- analyze dynamic effects of HVAC systems, modeled in Modelica, and their local and supervisory control loops, modeled in MATLAB/Simulink, Modelica or Ptolemy.
We will also couple a BACnet compliant Building Automation System to the BCVTB. This will allow testing supervisory control sequences using an EnergyPlus model to assess the energy and comfort performance of different supervisory control algorithms. It will also allow formal verification of control sequences before deployment to a building.
Contact
Philip Haves and [:MichaelWetter:Michael Wetter]BR Lawrence Berkeley National LaboratoryBR [http://btech.lbl.gov Building Technologies Department]BR {PHaves, MWetter}@lbl.gov
Note that you can edit almost any page on this wiki in order to contribute to this effort. See HelpForBeginners to get started.