基于模糊免疫PID的多媒體流自調(diào)整算法研究
The Research of Multimedia Streams Self-regulating Algorithm Based on Fuzzy Immune PID
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摘要: 提出了一種基于模糊免疫PID的多媒體流自調(diào)整算法(MFIPID)，實現(xiàn)對多媒體流的在線自調(diào)節(jié)和多媒體流資源有效管理。分析多媒體流自適應節(jié)模型，實現(xiàn)IP網(wǎng)絡可用帶寬的預估計，采用全論域范圍內(nèi)帶有自調(diào)整因子的模糊規(guī)則自調(diào)整方法進行免疫抑制量的模糊非線性逼近，并與免疫反饋機理相結合，多媒體流傳輸過程中自適應整定PID參數(shù)以改進傳統(tǒng)PID算法。仿真驗證了MFIPID算法的有效性。Abstract: A multimedia streams self-regulating algorithm based on fuzzy immune PID is proposed to attain the goal of on-line self-regulating of multimedia streams and effective resource management. Model of adaptive session is analyzed, and available bandwidth future estimation is achieved. The fuzzy nonlinear approximation of immune suppresser is fulfilled by fuzzy rules self-tuning with self-tuning factor in full domain. Then, in order to improve the traditional PID algorithm fuzzy nonlinear approximation is combined with immune feedback mechanism to adjust PID factors during the course of multimedia transmission. Simulation validates the theoretical results of MFIPID.
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