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针对目前各城市公交收费现状,提出了一种基于GPS的公交分段计价系统的实施方案。据此方案,给出了分段收费Pos机的基本硬件架构,详细阐述了Pos机分段计价的嵌入式软件实现流程,并对设计好的Pos机进行了现场的跟车测试。测试结果表明,该系统可以实现站台的自动检测,自动扣费;乘客可以从任意门上下车,灵活性强;此外,该系统不仅可以兼容现有的一票制,使得任何一辆车都可以作为机动车随时地代班故障车;同时还能够有效地处理各种逃票现象。 相似文献
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提出了一种针对码书优化的图像矢量量化算法。首先设定矢量距离的初始门限值,基于空间划分对训练矢量聚类,找到矢量个数小于平均胞腔矢量数的胞腔;提取其聚类矢量后删除该胞腔,然后缩小距离门限值再次聚类提取,依次循环直到聚类矢量个数达到要求。将提取的聚类矢量作为初始码书,进行LBG算法码书设计,有效地改善了传统LBG算法依赖于初始码书而容易陷入局部最优的缺点,采用改进算法生成的码书更接近全局最优,加快了收敛速度。仿真结果证明了该方法的有效性。 相似文献
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Stochastic bounded consensus tracking of leader-follower multi-agent systems with measurement noises and sampled-data 下载免费PDF全文
<正>This paper is concerned with the stochastic bounded consensus tracking problems of leader-follower multi-agent systems,where the control input of an agent can only use the information measured at the sampling instants from its neighbours or the virtual leader with a time-varying reference state,and the measurements are corrupted by random noises.The probability limit theory and the algebra graph theory are employed to derive the necessary and sufficient conditions guaranteeing the mean square bounded consensus tracking.It is shown that the maximum allowable upper boundary of the sampling period simultaneously depends on the constant feedback gains and the network topology. Furthermore,the effects of the sampling period on the tracking performance are analysed.It turns out that from the view point of the sampling period,there is a trade-off between the tracking speed and the static tracking error. Simulations are provided to demonstrate the effectiveness of the theoretical results. 相似文献
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Stochastic bounded consensus tracking of leader-follower multi-agent systems with measurement noises based on sampled data with general sampling delay 下载免费PDF全文
In this paper we provide a unified framework for consensus tracking of leader-follower multi-agent systems with measurement noises based on sampled data with a general sampling delay. First, a stochastic bounded consensus tracking protocol based on sampled data with a general sampling delay is presented by employing the delay decomposition technique. Then, necessary and sufficient conditions are derived for guaranteeing leader-follower multi-agent systems with measurement noises and a time-varying reference state to achieve mean square bounded consensus tracking. The obtained results cover no sampling delay, a small sampling delay and a large sampling delay as three special cases. Last, simulations are provided to demonstrate the effectiveness of the theoretical results. 相似文献
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针对具有时延的网络控制系统研究其最优控制问题.利用线性离散系统有限时域的增量式差分变换来取代传统的离散变换,在δ算子域内应用动态规划理论,设计线性离散二次型最优控制律,将包含时延参数的当前状态量和前一时刻的控制信号组成增广向量并进行闭环反馈控制律设计.经过理论和仿真验证,当采样周期趋于无穷小时,δ算子域离散系统的模型参数逼近于相应的连续时间模型参数. 相似文献
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Asymptotic bounded consensus tracking of double-integrator multi-agent systems with bounded-jerk target based on sampled-data without velocity measurements 下载免费PDF全文
This paper investigates asymptotic bounded consensus tracking(ABCT) of double-integrator multi-agent systems(MASs) with an asymptotically-unbounded-acceleration and bounded-jerk target(AUABJT) available to partial agents based on sampled-data without velocity measurements. A sampled-data consensus tracking protocol(CTP) without velocity measurements is proposed to guarantee that double-integrator MASs track an AUABJT available to only partial agents.The eigenvalue analysis method together with the augmented matrix method is used to obtain the necessary and sufficient conditions for ABCT. A numerical example is provided to illustrate the effectiveness of theoretical results. 相似文献
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Fault-tolerant finite-time dynamical consensus of double-integrator multi-agent systems with partial agents subject to synchronous self-sensing function failure 下载免费PDF全文
Zhi-Hai Wu 《中国物理 B》2022,31(12):128902-128902
This paper investigates fault-tolerant finite-time dynamical consensus problems of double-integrator multi-agent systems (MASs) with partial agents subject to synchronous self-sensing function failure (SSFF). A strategy of recovering the connectivity of network topology among normal agents based on multi-hop communication and a fault-tolerant finite-time dynamical consensus protocol with time-varying gains are proposed to resist synchronous SSFF. It is proved that double-integrator MASs with partial agents subject to synchronous SSFF using the proposed strategy of network topology connectivity recovery and fault-tolerant finite-time dynamical consensus protocol with the proper time-varying gains can achieve finite-time dynamical consensus. Numerical simulations are given to illustrate the effectiveness of the theoretical results. 相似文献
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针对传统的位置指纹定位算法在室内定位中存在着接收信号强度值不稳定以及不同终端设备获取AP信号强度能力不一样的问题,对传统的位置指纹定位算法进行了改进.对离线阶段采集到的RSSI值进行处理,去除了较大误差的样本,利用RSSI信号强度差值取代RSSI值作为信号特征录入Radio Map,减小了由于设备差异而产生的指纹信息误差.测试阶段,在Android和PC平台上进行验证,实验结果表明,改进的算法可以有效地去除离线阶段误差较大的样本并提高了该算法针对不同终端应用的能力. 相似文献