Abstract
Transputer processors provide several attractive properties for real-time control system implementation: high processing power, modularity and low cost multiprocessor extension for fault tolerance, increased processing capability and physical processor distribution. However, there are some basic differences which must be examined. The present occam implementations support multitasking on two priority levels and time sharing on the low level. The communication mechanism between asynchronous occam processes must be matched with real-time event synchronized task processing. Multitasking system performance can be calculated, if real-time event occurence rates, service deadlines and service task processing times are given. Characteristic parameters - burst factor and embedded parallelism — are defined to evaluate multiasking extension to parallel multiprocessing. The model prototype of a board sorting line control system is analyzed under different real-time loading conditions. It is compared with other types of real-time control applications.
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