电力电子变换器潜电路中的无效路径剔除方法

在现有无效路径判据的基础上,基于电路元件特性及基本电路原理,提出了可用于一般电路的无效路径剔除方法,并用基本降压式谐振开关电容变换器电路验证了此方法的可行性和正确性。     

基于重组优化的轮式移动机器人路径处理方法

针对轮式移动机器人采集GNSS（全球卫星导航系统）路径过程中容易出现无效路段的问题,提出了基于自适应分段重组的无效路径剔除方法和多目标优化的路径平滑方法。该方法首先按照航向将采集的GNSS路径划分为DRD(drive-reverse-drive)形式的路段组合,通过设定剔除规则来剔除其中的无效路段,并对剔除无效路段后的离散路段按照邻域路段长度进行第2次分段,以实现有效路段快速重组。其次以重组后的路径点集为决策变量,建立多目标优化函数、端点渐近约束和矩形区域约束,转化为二次规划型进行最优化求解,在保证路径平滑的同时减小与原有路径的位置差。实验结果表明,该方法能够有效处理不同道路形态下采集的无效GNSS路径,优化结果与重组路径平均位置偏差小于0.2 m,平均处理时间为8.8 ms,处理后的路径可用于无人车轨迹跟随。     

探究高中生了解电子电路的途径

电子电路区别于简单的高中物理电路,它是由大量的电元单元电路连接而成,在集成电路的基础上向上延伸的应用型电路,被人们广泛运用并在日常生活中分布密集.尽管电子电路是高中物理电路的升级版改良版,但电子电路的设计与应用原理与高中物理电路的知识息息相关,联系紧密,对电子电路的研究与分析也必须运用物理思维.近年来电子电路在生活中广泛运用,逐渐影响并改变了人们的日常生活.文章基于高中生视角,以多元化客观化的角度分析,对高中生了解电子电路的途径作了一个探究.     

电力电子变换器潜电路中无效路径排除新方法思考

潜在电路在一定条件下会激发启动,影响系统的正常运行。为了提高系统的安全可靠性,找出和排除无效路径是研究热点。无效路径判断的通常做法是针对某一具体电路的方法,不具有适用性。为此,本文对无效路径排除提出了新方法,本文提出可以从开关器件所具有的特征、拓扑约束关系、元件之间的约束关系、开关元件的匹配关系等方面来进行判断无效路径。     

电子电路抗噪声干扰措施

电子电路在大型工业生产和互联网中应用广泛,工业产品精度要求和互联网的快速发展对电子电路的性能要求越来越高.但许多用电设备在运行过程中会形成噪声干扰源,对电子电路造成不良影响,使电路性能指标下降,甚至导致电路不能正常工作.文章简单分析了电子电路中的噪声干扰的来源及耦合方式,重点介绍了电子电路中抗噪声干扰的具体措施.     

基于电力电子变换器邻接表的潜电路分析方法

潜电路分析(SCA)是保障电路系统可靠性的重要方法.本文通过研究电力电子变换器电路结构,提出了一种基于电力电子变换器邻接表模型的潜电路分析方法.该方法通过搜索变换器邻接表得到所有的电路模态,然后根据线索表去除冗余的和正常工作的电路模态,从而得到所有的潜在电路模态.最后以四阶升压谐振开关电容变换器潜电路分析为例,验证了所提出方法和设计软件的正确性.     

电子电路设计的原则、方法以及步骤探讨

电子电力设计看似简单,但是其实电子电路是十分复杂的,因为电子电路大多数情况下都是由多种基本电路组成的,所以在进行电子电路设计时,一定要根据实际情况进行设计,还要遵循一定的设计原则和方法。本文通过对电子电路设计的原则以及电子电路设计的具体方法进行了分析和探讨,总结归纳出了电子电路设计的具体步骤,以供相关人员参考或采纳。     

复杂航天器电气系统潜通路分析技术研究

针对复杂航天器电气系统功能接口复杂、信号类型众多的特点,系统分析了导致潜通路存在的接口冗余、时序逻辑复杂、接地类型多等客观原因;明确了复杂航天器电气系统潜通路分析工作流程,并简要论述了潜通路分析的准备工作中的单机电气接口数据收集、电路原理图设计与简化的方法和要点,结合潜通路仿真建模分析及优化方法,总结了复杂航天器电气系统潜通路故障定位的潜在路径搜索与分析、识别与验证的步骤;提出了复杂航天器电气系统预防潜通路的电气接口信号类型简单化、电气接口隔离、信号流向单一化、接地设计提前规划四项设计原则,并针对某航天器匹配测试阶段发现的潜通路问题的原因及改进措施进行了分析。     

电力电子电路的传输线计算机仿真模型研究

准确、稳定的电力电子电路计算机仿真模型是进行电路分析和研究的基础,传输线模型(TLM)是一种基于数值求解微分方程的电力电子电路计算机仿真模型,通过研究电路元件传输线模型的数值计算局部截断误差和整体截断误差,证明了电力电子电路传输线模型数值计算的收敛性和稳定性.与原有的分析电力电子电路暂态过程的离散分析方法相比,这种方法使用简单,物理概念明确,在小步长情况下同样有较好的稳定性,通过Matlab的M文件对模型的仿真结果与经典RK4计算结果的比对,表明了该方法的有效性.     

反馈电路的判别

反馈在电子电路中的应用非常广泛,如何正确判断反馈类型,是分析电子电路性能的重要前提。通过结合实例就反馈类型的判别做了较为深入的分析,总结了不同电路反馈类型简单有效的判别方法,有助于初学者更好更快的掌握反馈的知识。     

Topology-hiding garbled circuits without universal circuits

International Journal of Information Security - At present, garbled circuits play a vital role in secure multi-party computations. Originating from the garbling scheme of Yao, there is much work on...     

Parallelizing quantum circuits

We present a novel automated technique for parallelizing quantum circuits via the forward and backward translation to measurement-based quantum computing patterns, and analyze the trade off in terms of depth and space complexity. As a result we distinguish a class of polynomial depth circuits that can be parallelized to logarithmic depth while adding only a polynomial number of auxiliary qubits. In particular, we provide for the first time a full characterization of patterns with flow of arbitrary depth, based on the notion of influencing walks and a simple rewriting system on the angles of the measurement. Our method provides new insight for constructing parallel circuits and as applications, we demonstrate several classes of circuits that can be parallelized to constant or logarithmic depth. Furthermore, we prove a logarithmic separation in terms of quantum depth between the quantum circuit model and the measurement-based model.     

Multiple-valued CCD circuits

The benefits and current state of the art of charge-coupled-device logic are examined. The fundamentals of CCD logic operations and basic CCD configurations are presented. Programmable logic arrays are considered. The logic design of CCD multivalued logic and its applications are discussed     

Practical averaging circuits

Simple practical circuits for on-line averaging of continuous quantities are given. The paper also explains why a simple averaging circuit such as a first-order exponential lag provides good averaging in spite of the fact that its impulse response is a very poor approximation to that of the ideal finite-time averaging circuit. It is concluded that an averaging circuit should be chosen on the basis of a step response.     

Mapping from multiple-control Toffoli circuits to linear nearest neighbor quantum circuits

In recent years, quantum computing research has been attracting more and more attention, but few studies on the limited interaction distance between quantum bits (qubit) are deeply carried out. This paper presents a mapping method for transforming multiple-control Toffoli (MCT) circuits into linear nearest neighbor (LNN) quantum circuits instead of traditional decomposition-based methods. In order to reduce the number of inserted SWAP gates, a novel type of gate with the optimal LNN quantum realization was constructed, namely NNTS gate. The MCT gate with multiple control bits could be better cascaded by the NNTS gates, in which the arrangement of the input lines was LNN arrangement of the MCT gate. Then, the communication overhead measurement model on inserted SWAP gate count from the original arrangement to the new arrangement was put forward, and we selected one of the LNN arrangements with the minimum SWAP gate count. Moreover, the LNN arrangement-based mapping algorithm was given, and it dealt with the MCT gates in turn and mapped each MCT gate into its LNN form by inserting the minimum number of SWAP gates. Finally, some simplification rules were used, which can further reduce the final quantum cost of the LNN quantum circuit. Experiments on some benchmark MCT circuits indicate that the direct mapping algorithm results in fewer additional SWAP gates in about 50%, while the average improvement rate in quantum cost is 16.95% compared to the decomposition-based method. In addition, it has been verified that the proposed method has greater superiority for reversible circuits cascaded by MCT gates with more control bits.     

Design of Multivalued Circuits Based on an Algebra for Current-Mode CMOS Multivalued Circuits

An algebra proposed for current-mode CMOS multivalued circuits is briefly reviewed.this paper discusses its application in the design of multivalued circuits.Several current-mode CMOS quaternary and quinary circuits are designed by algebraic means.The design method based on this algebra may offer a design simpler than the previously known ones.