Switching Logic-based Adaptive Robust Control of Nonlinearly Parameterized Uncertain Systems

在这份报纸，切换基于逻辑的适应柔韧的控制为一个类被建议非线性地 parameterized 系统(NFS ) 。明确地，控制器主要由一项柔韧的类型条款组成探讨系统无常，和切换逻辑调节机制更新深奥控制获得。构造控制器完成全球一致地最终的固定(GUUB ) 系统错误的结果，和模拟结果被包括表明控制法律的有效性。

A novel circuit design for complementary resistive switch-based stateful logic operations

Recently, it has been demonstrated that memristors can be utilized as logic operations and memory elements. In this paper, we present a novel circuit design for complementary resistive switch（CRS）-based stateful logic operations. The proposed circuit can automatically write the destructive CRS cells back to the original states. In addition, the circuit can be used in massive passive crossbar arrays which can reduce sneak path current greatly. Moreover, the steps for CRS logic operations using our proposed circuit are reduced compared with previous circuit designs. We validate the effectiveness of our scheme through Hspice simulations on the logic circuits.

Voltage Control of a 12/8 Pole Switched Reluctance Generator Using Fuzzy Logic

This paper presents a voltage controller for a 12/8 switched reluctance generator (SRG). SR machines have a robust with simple structure because they have no windings or permanent magnets on the rotor, so they are capable of working at high speed application and at rough condition. However, due to nonlinear nature, doubly salient poles, time variant parameters, and non-ideal current waveform, The SRG output voltage inherently contains ripples. The proposed voltage controller is based on fuzzy logic that is very efficient over uncertainty and parameter variations. The effectiveness of the proposed control method is verified by comparing the obtained result with that of a PI-controller.

Reconfigurable dynamic all-optical chaotic logic operations in an optically injected VCSEL

In a chaotic system of vertical cavity surface emitting laser （VCSEL） with external optical-injection, we propose a novel implementation scheme for reconfigurable dynamic all-optical chaotic logic operations （AOCLOs）. Under different key parameters, such as the bias current, the injection strength and the frequency detuning of the injected light field and the VCSEL, we also explore the evolutions of the polarization-bistability with the amplitude of the injected light field when the output of VCSEL is chaotic wave. According to the dynamic evolutions, we find out the optimal value of the frequency detuning that is considered as a control logic signal, and further implement different AOCLOs, such as AND, NAND, OR, NOR, XOR, and XNOR, by controlling the logic operation of the control logic signal between two logic inputs. Moreover, the ability to reconstruct these logic operations is demonstrated under relatively low noise strength of the spontaneous emission.

DESIGN OF TERNARY CURRENT-MODE CMOS CIRCUITS BASED ON SWITCH-SIGNAL THEORY

By applying switch-signal theory, the interaction between MOS transmission switch-ing transistor and current signal in current-mode CMOS circuits is analyzed, and the theory oftransmission current-switches which is suitable to current-mode CMOS circuits is proposed. Thecircuits, such as ternary full-adder etc., designed by using this theory have simpler circuit struc-tures and correct logic functions. It is confirmed that this theory is efficient in guiding the logicdesign of current-mode CMOS circuits at switch level.

Logic-based Reset Adaptation Design for Improving Transient Performance of Nonlinear Systems

In this paper, logic-based switching and resetting principles are presented to devise adaptive control laws for a class of uncertain nonlinear systems in order to ensure both the transient bound and the asymptotical convergence of the state. A novel supervisor is constructed to decide when to reset the estimation parameter with the pre-given estimation value. A benchmark example is presented to demonstrate the effectiveness of the approach. © 2014 Chinese Association of Automation.

基于Zelio Logic的双电源加母联无线远程控制方案

基于施耐德Zelio logic逻辑控制器,给出了详细的双电源加母联应用方案。

计及高比例新能源多种控制方式及运行约束的连续潮流

高比例新能源电网的电压稳定问题突出,连续潮流是电压稳定分析的重要工具。现有含电压源换流器(VSC)电源电网的连续潮流未充分考虑VSC的多种控制方式以及运行约束,导致电压稳定裕度计算的准确性不足。文中提出同时计及新能源并网VSC的输出电流约束和内电势约束,以及考虑构网型新能源恒电压控制、无功功率-电压下垂控制和跟网型新能源恒无功控制的连续潮流模型和计算方法,给出了由约束导致的控制方式切换逻辑和分岔点类型识别方法。通过改造的IEEE 39节点系统算例结果表明,所提模型与算法提升了传统连续潮流方法对高比例新能源电网静态电压稳定分析的适用性。

矿用无人运输车辆精准停靠控制算法

以无人驾驶矿用运输车为平台,开展精准停靠控制试验研究。为尽可能精确地到达期望停靠位置,首先设计距离-速度规划方案,在此基础上提出1种前馈加反馈的执行器开度控制算法;其次,在底层控制中考虑加速度补偿项,并对制动切换逻辑进行优化;最后进行仿真测试和实车试验,通过测试纠正控制参数,避免掉烦琐的系统参数辨识。结果表明:采用精准停靠策略能降低干扰引起的速度波动,优化底层控制逻辑,有效提高停靠精度。

SELogic保护逻辑在用电系统备自投中的应用

以热电厂用电系统为例,介绍备自投的技术要求,详细分析美国SEL-351A综保内部控制逻辑,总结实际应用中注意的问题及解决措施。

MOEMS光逻辑开关状态监测系统

为提高MOEMS光逻辑开关的响应速度、减少长时间热积累对激光点火系统的影响,提出在电热式MOEMS光开关中加入状态监测系统。该监测系统包括状态监测单元、驱动电路、控制电路、状态监测电路等,通过在微电热驱动器的运动路径上设置状态监测单元,当微电热驱动器运动到与状态监测单元接触时,状态监测电路识别到接触信号并输出触发信号,从而实现光逻辑开关的快速切换。针对一种电热式MOMES光逻辑开关制作了状态监测系统原理样机,试验结果表明,该系统能够准确识别微电热驱动器的行程状态,光逻辑开关驱动光纤对正与复位的状态响应时间均小于90 ms。

一种体现构网型控制特征的柔性直流机电暂态改进建模方法

总结柔性直流采用构网型控制呈现的新特性并提出相应的机电暂态建模方法。通过分析,提出构网型控制替代跟网型控制给柔性直流带来的主要变化是:电压源支撑,故障穿越切换措施以及电流限幅方法。相对应的,构网控制型柔性直流机电暂态模型是对跟网控制型柔性直流模型的改进,包括将换流器与交流网络的接口由传统的一个交流仿真步长内的平均功率改为平均电压;增加故障穿越措施切换逻辑以及增加基于用户自定义的电流限幅措施。通过交直流间接口方法仿真对比,以及机电、电磁暂态模型故障模拟验证所提模型的有效性。该模型能高精度模拟构网控制型柔性直流在交流电网中的动态行为,具有良好的应用价值。

Robust Feedback Set Stabilization of Logic Networks with State-Dependent Uncertain Switching and Control Constraints

This study investigates the robust feedback set stabilization of switched logic control networks(SLCNs)with state-dependent uncertain switching and control constraints.First,based on the properties of the semi-tensor product of matrices and the vector representation of logic,an SLCN with state-dependent uncertain switching and control constraints is expressed in algebraic form.Second,an input transformation and a switching model are constructed to transfer the original SLCN into one with a free control input and arbitrary switching.The equivalence between the set stabilizability of the original SLCN and that of the resulting SLCN is established.Based on such equivalence,the authors propose a necessary and sufficient condition for robust feedback set stabilizability.Finally,an example is presented to demonstrate the application of the results obtained.

发电机定子冷却水系统逻辑优化研究

研究了田湾核电站二期工程发电机定子冷却水系统的逻辑优化问题。该系统是一个闭式循环冷却水系统,配备两台交流电机驱动离心水泵,并联布置,正常运行时一用一备。系统设置了断水保护逻辑以防止发电机定子线圈过热,也设置了自动启动备用定子冷却水泵的备自投逻辑。通过对系统流程、逻辑保护设置、存在的问题及逻辑优化等方面的研究,提出了一种优化方案,并通过试验验证了其有效性。

数据中心市电油机切换逻辑在物理三锁两钥匙限制下的应用

在数据中心建设中,供电架构设计及市电油机切换逻辑是非常重要的,为了保障数据中心的稳定运转,国标A级数据中心一般采用2路10kV市电2N架构,并配置柴油发电机组做为备用电源。部分省市电力部门要求对市电两进线开关和母联开关增加物理三锁两钥匙,导致系统无法自动切换,响应时间延长,影响供电可靠性。本文讨论在上述场景下,怎样设计市电和油机切换逻辑,并采用安全可靠的电气联锁等技术措施,以确保数据中心供电的安全稳定。

新型复式交分道岔在CBTC车辆段的应用与研究

从信号系统控制的角度出发,在研究传统复式交分道岔控制方式的基础上,以台州市域铁路S1线CBTC车辆段内设置的复式交分道岔为例,提出新型复式交分道岔在CBTC制式下的应用。结合传统复式交分道岔,从新型复式交分道岔的控制原理、逻辑处理、列车控制方式等方面,介绍其优化设计方案和控制方案,以便为后续新型复式交分道岔在CBTC车场的应用提供重要的指导和借鉴作用。

基于计算机联锁的中岔反位发车电路设计与实现

原有到发线出岔电路不能满足中岔反位发车作业需求,针对此种情况,基于计算机联锁,在原有到发线出岔电路的基础上,提出适用于中岔反位发车作业场景的设计方案。具体的设计方案包含中岔反位发车进路终端的特殊设计及进路中相关区段的特殊解锁以及零散电路的设计。该方案应用于山西晋能控股的云冈西站,满足车站的作业需求,现场运行状况良好。

自动化轨道吊高压柜远程倒闸操作控制系统设计

针对目前集装箱码头自动化轨道吊远程倒闸操作智能化程度低、影响设备运维效率且存在作业安全隐患等问题,提出一种高压柜远程倒闸操作控制系统改造方案。在对系统关键技术进行分析的基础上,优化了执行部件的布置与安装方案,设计了基于PLC控制器的电气控制硬件系统、软件程序和人机交互界面。改造后,该系统可实现自动化轨道吊的全自动倒闸操作,提高设备智能化、自动化程度。

具有时变全状态约束的多输入多输出非线性切换系统指定性能事件触发控制

针对多输入多输出切换非线性系统面临的不可测状态、状态约束、通信资源受限等挑战,本文研究了一种具有指定性能的事件触发控制策略。借助状态观测器和模糊逻辑系统,完成对不确定系统的建模。将命令滤波引入至反步递推(Backstepping)设计过程,以避免因虚拟控制器反复求导引起的计算爆炸问题,并通过设计指定性能函数,保证系统的瞬态性能。通过构造事件触发控制器和障碍李雅普诺夫函数,有效解决时变状态约束及通讯资源受限的问题,并保证系统的稳定性。最后通过仿真验证控制算法的有效性。

超高压电网500kV线路接地刀闸防误闭锁原理及典型问题分析

接地刀闸防误闭锁回路是否正确对电网倒闸操作安全性至关重要,围绕超高压电网变电站中500 kV线路接地刀闸防误闭锁问题,研究不同情况下的线路接地刀闸逻辑闭锁与电气闭锁原理,并针对变电站安全生产中出现的线路接地刀闸防误闭锁问题,提出将电压互感器二次空开辅助接点串入闭锁回路、升级测控装置等措施,提升线路接地刀闸防误闭锁功能的可靠性。