电镀用脉冲电源的微型机实现

为满足某些贵金属电镀生产和实验要求，本文提出了一种新型电镀用脉冲电源微型机实现方法。采用8098单片机的高速输出口（HSO）实现脉宽、频率（周期）可调输出，同时采用图形点阵液晶显示器LCD做图形字符显示，构成一个可提高电镀质量、灵活、可靠的小型系统。     

多波形脉冲电镀电源控制系统的研究

研究以单片机为控制核心的多波形脉冲电镀电源控制系统,实现输出脉冲的频率、辐值、占空比和工作时间在一定范围内连续可调,并可设定多组脉冲波形组合形式。     

单片机在脉冲电镀电源中的应用

介绍了用于脉冲电镀电源中以80C196KC为核心的单片机系统的硬件结构和软件设计。     

8098单片机在高速换向脉冲电镀电源中的应用

基于8098HSO同时输出三路脉冲,控制实现高速换向脉冲输出的原理,构成8098单片机控制的高速换向脉冲电镀电源,给出了8098控制系统的软硬件设计.     

高速换向脉冲电镀电源控制系统的设计与实现

给出采用双８０９８单片机公用ＲＡＭ技术实现的高速换向脉冲电镀电源控制系统的软硬件设计思想和方法     

APCP-150智能脉冲镀银电源的设计与研发

国产脉冲电镀电源通常采用手动方式调节参数,因此在设定参数之后,只能以单一参数的脉冲波形进行电镀;某些国外电镀电源虽然实现了程控,但也存在一定的缺陷．如脉宽调节范围较窄,脉冲频率不可调等。针对上述缺陷,对传统脉冲电源进行了优化设计。新设计的APCP-150型程序控制脉冲镀银电源主要基于程控技术和斩波技术,以大功率半导体器件为主开关器件。通过PLC输出不同频率的脉冲信号来进行控制,以实现各种不同工艺要求的电镀,并在镀银生产中减轻了工人的劳动强度,节省了工时。     

基于ARM多波形脉冲电镀电源控制系统设计

采用Samsung S3C2440为控制核心的多波形脉冲电镀电源,在平均脉冲电流不变时,通过改变其脉冲频率、占空比以及每组脉冲电流工作时间、方向和大小等参数,实现不同的脉冲组合波形。同时,实现远程通信和各参数的远程调节与显示。该设计提高了电子元器件的寿命和可靠性,增强了镀层效果,还可在其它镀种中得到推广。     

多波形脉冲电镀电源控制器的研究

本文介绍一种采用Samsung S3C2410为控制核心的多波形脉冲电镀电源控制器,在保持平均脉冲电流不变情况下,通过改变其脉冲频率、占空比以及每组脉冲电流工作时间、方向和大小等参数,实现不同的脉冲组合波形.同时,实现远程通信和各参数的远程调节与显示.     

微机脉冲电流电源装置的研制与应用

微机脉冲电流电源装置的电流脉冲频率连续可调,脉冲宽度可调,可以单脉冲输出,也可连续脉冲输出,大电流脉冲输出,输入参数可以随意设置,输出电流密度可变。该装置已用于非晶材料的处理当中,应用效果非常好。     

原油电脱水高频高压脉冲电源研究

目前油田原油含水率渐高,常规脱水方法已经不能满足.鉴于高压直流脉冲电脱水的种种优点以及高压脉冲电源研制难的现状,本文提出了一种基于脉冲同步叠加的方式产生高频高压脉冲的方法.文中详细介绍了脉冲同步叠加的原理,给出了高压脉冲形成电路结构,采用改进型PI控制器进行控制并建立了其系统框图.最后通过仿真分析,验证了电源实现的可行性.     

Stable LQG controllers

The optimal LQG controller is known to stabilize the closed loop if certain mild conditions are satisfied. The controller itself, however, may be unstable. The paper presents a method of selecting the weighting and covariance matrices such that the optimal controller is internally asymptotically stable. The method is very easy to apply and for stable open-loop system involves the solution of a single Lyapunov equation     

Stable and controllable noise

We introduce a stable noise function with controllable properties. The well-known Perlin noise function is generated by interpolation of a pre-defined random number table. This table must be modified if user-defined constraints are to be satisfied, but modification can destroy the stability of the table. We integrate statistical tools for measuring the stability of a random number table with user constraints within an optimization procedure, so as to create a controlled random number table which nevertheless has a uniform random distribution, no periodicity, and a band-limited property.     

Stable proper nth-order inverses

A stable proper right (left)nth-order inverse of a given linear time-invariant system of orderncan always be constructed, via a simple algorithm, if a proper right (left) inverse exists and the zeros of the given system are stable. Furthermore, it is shown that all of the poles of this inverse can be arbitrarily assigned except those which equal the zeros of the given system.     

Stable marriages by coroutines

The stable marriage problem is an appealing version of many pairing problems. A solution by coroutines is given, based on the recursive algorithm of McVitie and Wilson (1971). There are few published algorithms where coroutines are really useful but they solve this problem very naturally.     

Stable hybrid adaptive control

This paper examines the asymptotic properties of a hybrid adaptive control scheme. While there are many different meanings of the word ‘hybrid’ control in the literature, we are referring to a scheme where the on-line parameter estimation and underlying control design are carried out in a discrete time using digital electronics and do not require any analog multiplications or divisions. This is of critical importance in practice since analog multipliers/dividers are subject to serious drift and offset errors. For such hybrid schemes we establish stability and an output tracking property without recourse to persistence of exitation. The proof of stability requires a sufficiently fast sampling rate for the discrete time parameter estimation and the underlying control design.     

Stable robust adaptive controller

This paper presents a globally stable adaptive controller for linear discrete systems in the presence of unmodelled dynamics and bounded disturbances. The proposed formulation uses an augmented plant representation that incorporates P, Q and R weighting polynomials for the system output, input and setpoint respectively into the predictive control law. The algorithm also includes a normalized estimation scheme, based on a least-squares estimator, and a parameter adaptation stopping criterion to guarantee stability.     

Stable redesign of predictive control

The paper deals with I/O versions of receding horizon controllers based on the minimization of multistep quadratic costs with the constraint that the terminal state goes to zero. The resulting control law yields stable closed-loop systems under sharp conditions. Simulation results are presented to both verify the theoretical analysis and relate the new control law with GPC     

稳定的K-多均值聚类算法

指定K个聚类的多均值聚类算法在K-均值算法的基础上设置了多个次类,以改善K-均值算法在非凸数据集上的劣势,并将多均值聚类问题形式化为优化问题,可以得到更优的聚类效果。但是该算法对初始原型敏感,且随机选取原型的方式使聚类结果不稳定。针对上述问题,提出一种稳定的K-多均值聚类算法,并对该算法的复杂度与收敛性进行了简要讨论。该算法先基于数据样本的最邻近关系构造图,根据图的连通分支将数据分为若干组,取每组数据的均值点作为初始原型,再用交替迭代的方法对优化问题进行求解,得到最后的聚类结果。在人工数据集和真实数据集上的实验表明,该算法具有更稳定更优越的聚类效果。