For the feedback controller design , under the condition of that the noise and disturbance had been eliminated through disturbance observer , an anti - windup state feedback controller is proposed to solve the problem in which most of the existing anti - windup schemes can not guarantee the asymptotic closed - loop stability even for open - loop stable systems subjected to actuator saturation 对于反馈控制器设计,考虑了系统的物理约束即驱动饱和的影响,在系统的量测噪声和外部扰动已经通过扰动观测器减弱的条件下,提出了一种抗漂移的状态反馈控制器设计方法。仿真结果表明所提方法的有效性。
The stability of the feedback interconnection of a linear stable system and a bounded perturbation is studied in time domain in this paper . it s shown how a complex system can be characterized by integral quadratic constraints . and the iqc s theory in the time domain is given . for such model , a sufficient condition for the stability of the feedback interconnection is obtained , in some cases , this condition is also necessary . as the applications of the result in this paper , the problem of absolute stability is considered , then the timevarying circle criterion and other stability criteria are given 在时域内研究了由一个稳定的线性系统和一个有界因果系统所构成的反馈内联系统的输入输出稳定性问题,给出了时域内的iqc的理论框架,得到了判定反馈内联系统稳定性的一些判据,同时也得出了一些必要条件。最后,作为前面结果的一个应用,将所得的结果应用到绝对稳定性问题中,得到了时变的圆判据和其他的一些稳定性判据。
Only those features had been connected together and appearances a stable system of rural society , can we recognize the significance of rural society through the institution culture . china is a vast traditional agriculture country , the amount and spread of villages are extensive compared with other countries , and how to find out effective ways of preservation from thousands of strands and loose ends is a quite difficult problem 同一宗族形成的血缘关系的存在成了村落赖以存在的基础,而它所投射出的地缘关系使得生活在那里的人们有了共同的生活和生产基地,血缘性代表着其生物学特征,地缘的聚居性则表明了其地理学特征;血缘关系为群体提供了无形的联带,地缘关系为群体提供了有形的联带。
( 1 ) thermodynamic stable system : in this part , many experiments have been done in order to get the data of alcohols " soluble capacity in diesel fuel , the solubilizing power of some solubilizing agents , the effects of surfactants " hlb number and water on the mixture fuel stability ( 1 )柴油与醇形成热力学上的稳定体系。本文通过大量实验比较了醇与柴油的相溶能力、多种助溶剂对柴油-醇的助溶效果、表面活性剂的hlb值对柴油-醇的增溶效果的影响以及水对这种热力学上的稳定体系的影响。