マルチDSPシステムによるスループット時間が最短であるディジタル制御器の実現

概要

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In this paper, we consider the implementation of real-time digital controller under multi-DSPs environment. Proposed is a new configuration of multi-DSP system and parallel processing scheme which possibly shorten the sampling period under minimum throughput time for the digital controller. We formulate the schenduling problem of the multi-DSP system to realize the given control law as a difference equation, and derive a reasonable solution of the problem. We also illustrate a concrete hardware configuration of the multi-DSP system. Then we show that the multi-DSP system successfully avoid data collision by using bus buffers and the suitable scheduling for DSPs. In the discussion of memory allocation and management, we propose the way to conserve the data struture without moving any data in the memory. Finally, we evaluate the proposed multi-DSP system compared wiht the other multi-DSP system in an application. The proposed methods can be applied to general DSPs, and examples are given for particular DSP, TMS 320 C 25.
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