Control and Scheduling Co-design of Distributed Real-Time Control Systems
2004 (English)Conference paper (Refereed)
Closing control loops over networks is becomingincreasingly popular in embedded applications because of itsflexibility, but it also introduces many new problems. From acontrol perspective, the computer system will introduce (possiblyrandom) delays in the control loop. There is also the potentialproblem of lost measurement signals or control signals. Froma real-time perspective, the first problem is figuring out thetemporal constraints (deadlines, etc.) of the different tasks in thesystem, and then scheduling the CPUs and the network such thatall constraints are met during runtime. As a recurring example,a DC servo, whose position control-loop that is closed over aSwitched Ethernet communication network is studied. It is thenextended to three such systems running parallel sharing the CPUtime and the network bandwidth. Hence different schedulingpolicies with subtask scheduling is investigated.
Place, publisher, year, edition, pages
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-59721OAI: oai:DiVA.org:kth-59721DiVA: diva2:476135
1st Regional Conference on ICT and E-Paradigms Colombo, Sri Lanka, 24th – 26th June 2004
QC 201201192012-01-112012-01-112012-01-19Bibliographically approved