离散连续系统

The thesis analysises the superiority of genetic algorithm in dealing with discreate variables and primal-dual interior point method in dealing with continuous variables, and brings forward a discoupled combined algorithm which is based on the equipment control priority and take advantage of genetic algorithm and primal-dual interior point method, and the emulator of IEEE-30 bus system validates the fesability of the discoupled combined algorithm.

本文分析了遗传算法在处理离散变量和原对偶内点法处理连续变量的优势，提出一种基于设备动作优先级并利用遗传算法和原对偶内点法的解耦组合算法思路，通过IEEE-30节点系统仿真验证了该解耦组合算法的可行性。

In this paper, the maximum likelihood algorithm with process and measurement noise for nonlinear continuous-discrete system given by Jategaonkar and Plaetschke is improved in two aspects: 1 to avoid the disadvantages of sensitivities computation by common finite-difference method, in which the perturbation sizes should be selected optionally, an improved finite-difference method with best perturbations, is presented. 2 to improve the numerical stability of Jategaonkar's algorithm, maximum likelihood algorithm with fast triangular square-root decomposition filter is given.

摘要对Jategaonkar等人给出的同时计及过程及观测噪声的非线性连续-离散系统的极大似然算法从两个方面进行了改进：1给出了计算灵敏度的最佳摄动有限差分算法，避免了普通有限差分法计算灵敏度矩阵时需人为选择参数摄动量大小而带来的缺点；2给出了具有快速三角化平方根滤波的极大似然算法，提高了原算法的数值稳定性。

With fault signals of vibration tested in practice, this paper takes frequency-domain half-power bandwidth Gauss wavelets of continuity, index wavelets decomposition and equivalent bandwidth equivalent sampling discrete bi-orthogonal wavelets decomposition as basis, presents scaling correlated analysis correspondingly toward wave making vibration signals, and accurately realizes to decompose different stress wave speeds, and provides a method of analysis and calculation for accurated location and recognition of the polygenetic faults.

根据上述故障力学模型，我们提出并设计了相应的测试系统，对实测的故障振动信号，以频域半功率带宽连续高斯小波、指数小波分解和等带宽等采样离散双正交小波分解为基础，提出了相应的对波致振动信号的尺度相关分析，准确地实现了分离不同的应力波速，为多源故障的精确定位识别提供了分析和计算方法。

This workfocuses on the fractality and multifractality of the gas-liquid two-phase turbulent jet and theapplied theories of deterministic multifractals,discrete random multifiactals and continuousmultifractals.

本文着眼于探索气液两相湍射流中的分形和多重分形特性，并为此而系统地研究了确定性多重分形理论、离散型随机多重分形理论和连续多重分形理论。

A hybrid self-adaptive control approach is proposed for the structure of inner gimbal in direction tracking.This approach designs a self-adaptive controller by combining the discrete control and continuous control.The coupling between gimbals and the acceleration interference are converted to unmodeled dynamics of object.

针对方位跟踪通道中的内框架系统结构，提出了应用一种混合自适应控制方法，该方法在设计自适应控制器时采用离散与连续相结合的方法，并将耦合作用和加速度干扰转换为对象的未建模动态进行处理。

The proposition and research of the hybrid system provide a good tool to describe both the coupling of characters of continuous and discrete dynamics and the complex dynamics phenomenon of the coupling and to understand some complex phenomenon in nature and society.

混合系统的提出与深入研究，为刻画连续与离散动力学特性两者间的耦合及其产生的复杂的动力学现象、为人们理解自然和社会的一些复杂现象提供了一种有力的工具。

The method for parameter discretization and optimi zation of CWT is estabished. The concept of wavelet entropy is introduced and it is used as a rule for parameter optimization.

从参数离散到参数优化系统研究了连续小波变换的工程应用方法，建立了&小波熵&的概念，并以此作为基小波参数的择优标准。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。