Plug-and-play diagnosis
Kontaktperson: Sven Bodenburg
Zeitraum: seit 01.01.2016
Beschreibung: This project focuses on interconnected systems with N subsystems Si controlled by N decentralised control stations Ci. It considers the local detection of a fault f which can occur in subsystem S1 taking into account that the fault has also e ects on the other subsystems through the physical couplings (Fig. 1).
Figure 1: Plug-and-play diagnosis
Plug-and-play diagnosis is described here as a concept to organise the design steps of a local diagnostic unit without having a global coordinator available. In line with this concept, there exist N identical design agents Di (double framed boxes in Fig. 1) which are assigned to the respective subsystem Si. Each design agent stores the local models Si and Ci of the corresponding subsystem and control station as well as the information about the couplings.
The design agent D1 organises the design steps of the diagnostic unit DU1, which particularly consists of a model-based residual generation and a residual evaluation in order to detect the fault. Accordingly, based on the initially available information, the design agent D1 has to procure the models from other design agents Di (double arrows in Fig. 1) to set-up a model with input u1f (t) and output y1f (t) that is used for the residual generation. In a second step, the design agent D1 has to fix a detection threshold to guarantee the detection of the fault.
In summary, the project is devoted to the question:
Which models have to be communicated among the design agents Di over the network
so as
to enable
the design agent D1 to design a local diagnostic unit?