高速公路计算机收费系统的设计

在我国现行的电子不停车收费系统(ETC)和人工半自动收费系统(MTC)基础上,通过对高速公路收费系统ETC体系结构、车道收费软件算法、组合式车道数据融合等问题进行了分析。提出了ETC车道硬件、线圈和天线的布设方案、收费软件的交易算法、交互关键性指令等内容的设计方法。     

高速公路车道收费与控制系统的实现

介绍了高速公路收费系统中车道收费及控制系统实现的关键技术。重点论述了车道收费及控制系统的设计、数据传输和外场设备控制等方面的内容。     

高速公路入口车道收费与控制仿真软件的实现

该文介绍了一种高速公路入口车道收费与控制系统仿真软件。本系统可以模拟车道事件，便于在实验室中调试车道收费系统，提高了开发效率。该仿真系统的功能结构分为数据库、数据传输、系统外设、车型判别、仿真五个部分。按普通车、车队、特殊车、冲卡车四种情况采取四种不同的控制逻辑。     

高速公路收费软件的设计与实现

从系统稳定、实用、简单的角度出发，提出了设计高速公路车道收费软件的一种新思路，并就其中几个关键技术进行了叙述。根据该思路设计的长潭高速公路收费系统运行安全可靠，结构严谨，得到了用户的一致好评。     

不停车收费车道控制系统的优化设计及实现

车道控制系统作为负责收费车道数据采集、交通控制以及与上级系统通信的前端系统,是ETC系统能否正常有效运行的关键。文章详细阐述了ETC车道控制系统的主要功能及设计原则,给出了ETC车道构成、车道控制系统的模块结构及工作流程。实践表明,该系统功能完善、稳定可靠、符合国情,具有广泛的应用前景。     

有限自动机理论在高速公路收费中的应用

阐述了有限自动机理论及其在高速公路车道收费控制中的应用 ,最后描述了系统硬件结构框图和软件设计。     

ETC车道控制系统的设计与实现

车道控制系统负责过车收费信息的采集、交通控制及与上级系统的通信。介绍了ETC车道布局结构、车道控制系统的控制流程及模块结构,以及测试结果。测试表明系统是高效可靠的,具有好的应用前景。     

基于中间件的高速公路车道控制收费系统的设计

分析了目前常用的基于二层架构的C/S模式的高速公路车道收费系统现状,指出其存在的不足,提出并实现了基于中间件的三层体系结构的高速公路车道控制收费系统,详细介绍了系统的结构、功能、业务流程及关键技术。该系统已在多个收费站成功投运,至今运行情况良好,性能可靠稳定。     

车道收费系统中USB接口通信卡的设计

带USB接口的设备使用方便，发展迅速，文章结合高速公路车道收费系统中的实际问题，详细介绍了设计一个USB接口通信卡的过程，包括电路设计、器件选择、固件设计、驱动程序及其应用程序设计。     

高速公路自动收费,监控系统

介绍高速公路自动收费，监控系统的设计思想，系统结构及车道收费机的日常作业等３个功能模块并概括地了监控系统的硬件组成，系统采用红外动态差分技术及专家系统判别车型，利用ＮＯＶＥＬＬ网进行数据通讯。     

加权非对称选择网活性和有界性分析

给出了Petri网系统的一个重要子类,即加权非对称选择网(weighted asymmetric choice net,简称WAC网)系统活性的一个充分条件和一个必要条件;同时,提出了活的有界的WAC网系统的判定条件,进而给出了WAC网活性满足单调性的充分必要条件.     

非线性中立型时滞系统的鲁棒耗散控制

研究了非线性中立型时滞系统的鲁棒耗散控制问题,系统包含状态时滞和非线性不确定性,基于Lyapunov稳定性理论,给出了该类时滞系统在非线性不确定性满足增益有界的条件下耗散控制器存在的充分条件,并通过线性矩阵不等式(LMI)方法构造得出耗散控制状态反馈律,最后给出一个数值算例验证了本文结果的有效性.     

二阶离散线性时变系统的一种稳定性判据

本文对二阶离散线性时变稳定性问题进行了研究。在离散线性时变系统Lyapunov稳定理论的基础上，给出二阶离散线性时变系统稳定的充分条件。即系统系数满足系数冻结条件和系数变化条件。仿真验证了结论的正确性。     

Driving and control of torque for direct-wheel-driven electric vehicle with motors in serial

The utilization of motor-in-wheel in the electric vehicle (EV) is a very important research topic. In order to simplify the control of EV, a new system is proposed by Guilin Tao, which changes the traditional configuration and control strategy of direct-wheel-driven EV. In this system two permanent-magnet-brushless dc motors (PMBDCMs) are connected directly in serial, in order to cut down the differential algorithm thoroughly in velocity control strategy. This structure can realize the differential automatically when the EV runs on the smooth road at low speed. But this structure considers the characters of the motor only, which is an ideal system. EV is a complex electromechanical system, and its work condition is also complex. The variation of the external condition and the work condition of operation can affect the operation of motor, so the state of the EV will change. In this paper, according to the change of the work condition and road condition, combined with the dynamics of EV, this problem was well studied. The neural network PID control mode was used in this paper, and by means of the Matlab/Simulink and the experimental verification, it reveals that this method can enhance the safety and stability of this system.     

离散线性时变系统稳定性研究

本文对离散线性时变系统的稳定性问题进行了研究。给出离散线性定常系统收敛速度的定义，基于离散线性时变系统Lyapunov稳定理论，给出离散线性时变系统稳定的充分条件，即系统系数满足系数冻结条件和系数变化条件。仿真验证了结论的正确性。     

Stability of stochastic interval systems with time delays

Consider a given exponentially stable system undergoing a random perturbation which is dependent on a past state of the solution of the system. Suppose this stochastically perturbed system is described by a stochastic differential-functional equation. In this paper, we establish a sufficient condition that the perturbed system remains exponentially stable. Using a specific example, we show how this condition may be used, and we extend it to deal with multiple time delays.     

利用关系矩阵分析模糊控制系统的稳定性

本文提出了利用模糊关系矩阵分析模糊控制系统稳定性的新方法。     

Dissipative control for linear systems by static output feedback

In this article, the problem of static output-feedback dissipative control is investigated for linear continuous-time system based on an augmented system approach. A necessary and sufficient condition for stability and strict (Q,S,R)-dissipativity of the closed-loop system is established in terms of a matrix inequality with free parametrisation matrix. An equivalent characterisation with some slack matrices for numerical solvability is then proposed. Based on this, a necessary and sufficient condition for the existence of a desired controller is given, and a corresponding iterative algorithm is developed to solve the condition. The effectiveness of results developed in this article is demonstrated by some numerical examples.     

带有执行器故障的非线性系统的H_∞容错控制

为了解决复杂非线性系统执行器故障问题,提高系统的安全性和可靠性,本文针对一类带有执行器故障的非线性系统,提出了一种H∞容错控制方法。在假设非线性项满足李普希茨条件的前提下,利用线性矩阵不等式方法,给出了有干扰和无干扰时控制器存在的充分条件。该条件不仅保证了系统在执行器故障和正常情况下均能达到渐近稳定,而且能满足一定的性能指标,对干扰具有很好的抑制作用。最后将该方法应用到了水下机器人航向控制系统中,仿真效果较好,说明所给方法是有效性。     

Data-based controllability analysis for generalised linear discrete-time system

In this paper, we aim to propose a data-based method to testify whether the system is a normal linear system or a generalised linear system and then analyse its controllability via the measured state data and the control input satisfying certain condition. For this purpose, we first describe a linear discrete-time system in a general form and derive a necessary and sufficient condition for the equivalent condition of complete controllability with a normal linear discrete time system. Second, we check whether the system is normal or singular, and then construct the controllability matrices only based on the input and measured state data. Third, the controllability of the corresponding system is investigated thoroughly based on available data without identifying system parameters. Finally, a numerical example and a stock price example are used to show the effectiveness and feasibility of the proposed data-based method.