OpenRTM-aist
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| Developer(s) | National Institute of Advanced Industrial Science and Technology |
|---|---|
| Stable release |
1.1.2 / May 27, 2016
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| Written in | C++, Java, Python |
| Platform | Windows, Linux, macOS |
| Type | Library |
| License | LGPL |
| Website | www |
OpenRTM-aist is a software platform developed on the basis of the RT middleware standard. OpenRTM-aist is developed by National Institute of Advanced Industrial Science and Technology which also contributes to definition of the RT-middleware standard.
In RT middleware, all robotic technological elements, such as actuators and sensors, are regarded as RT-components (RTC). Each RTC provides ports to communicate with other RTCs, and developers can implement their own robotics technology (RT) systems as RTCs. The RT-middleware can thus be considered as a distributed control architecture.
RT-middleware is originally a platform independent model (PIM). Implementations of this model include CORBA, Enterprise JavaBean (EJB), and .NET Framework. OpenRTM-aist is based on the CORBA technology and implements the extended RTC specification. Experiences with OpenRTM-aist will be fed back to the RT-middleware standardization process.
OpenRTM-aist implements some extended RTC features, and it also includes a Manager component to help manipulating RTCs. RTCs in OpenRTM-aist can be implemented using many programming languages, and RTCs programmed in different languages can communicate with each other. A lot of tools to ease RTC manipulations are also released by the National Institute of Advanced Industrial Science and Technology and their co-workers (in a strict sense, OpenRTM-aist itself is a library and does not include these tools).
The RT-component is a functional unit which conforms to the RT-component specification defined by OMG. In OpenRTM-aist, RTCs have data ports, service ports, and execution context which controls the RTC's state.
In standards of RT-component, RTC must have 4 states such as CREATED, INACTIVE, ACTIVE, and ERROR. When the state changes, corresponding event-handlers are called by the execution context which manages the RTCs' state machine.
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