An improved adaptive harmonic detection method based on least squares algorithm was presented, its stability is proved by averaging theorem of dynamical system theory.
提出了一种基于最小二乘法的自适应谐波检测方法，并利用动力系统的均值理论证明了该方法的稳定性。
It is shown that the decentralized MRAS robust controller proposed can guarantee the required stability, robustness and dynamical properties of the system.
分析表明，本文提出的分散MRAS鲁棒控制器，使系统的稳定性、鲁捧性、动态品质都得到了提高。
This paper studies problems of the existence and the stability of the equilibrium price for the general dynamical market pricing system, and obtains the condition of the equilibrium price stability.
研究了一般动态市场价格系统的均衡价格的存在性和稳定性问题，得到了均衡价格稳定的条件。
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