-
数学建模论文1992-2011年全部优秀论文与点评
数学建模历届论文，不容错过，里面大概有40多篇论文，还有很多点评，想在数学建模中取得好成绩，那就快来学习吧。肯定不会让您失望的。一切都等着你，还等什么，希望能为你们在数学建模方面带来很大的帮助。
- 2020-12-09下载
- 积分：1
-
USB转CAN开源资料
【实例简介】USB转CAN开源资料,有源码，原理图，PCB版图
- 2021-11-19 00:39:14下载
- 积分：1
-
校园跑腿（后台+微信小程序）.zip
校园跑腿（后台+微信小程序）.zip
- 2020-12-04下载
- 积分：1
-
matlab粒子群算法（PSO）实现函数极值优化
matlab实现粒子群算法（PSO） 极值优化的程序代码
- 2020-12-02下载
- 积分：1
-
RTX8.1.2含SN
intervalzero RTX8.1.2 安装包 ，实时Windows扩展。内附sn。
- 2020-12-10下载
- 积分：1
-
网络ns2仿真实验分析(RED、丢包率、端到端延迟、吞吐量)附源码
网络ns2仿真实验分析(RED、丢包率、端到端延迟、吞吐量)附源码分组的端口号。(10) dst addr:目的地址,格式为 node port,其中node代表分组发送节点的id,pot表示发送分组的端口号。(11) seg num:分组的序列号。(12) okt id:分组的唯标识符。3n2与n3之间的RED队列的半均队列长度与当前队列长度随时间的变化如下图所示:torrent and ave"吧 e PED CueL旧300era已n15000ANA图2平均队列长度与当前队列长度随时问变化的曲线图4运行结果中显示CBR流量总共发包550,丢失16,丢包率为:0.029。丢包率随时间的变化如下图所示:packets of lost rate。045graph自04,03500自020.015图3丢包率随时间变化的关系图5CBR流量的吋延随时间的变化如下图所示:1u彐r10.14心01Q。0图4端到端时延随时间变化的关系图6.节点n2的平均吞吐量随时间的变化如下图所示100T图5节点n2的吞吐量随时间变化的关系头7.结果分析:从RED的图示中,可以看出队列的大小波动变化不是很大,在处理突发的包时冇一定的优势。从丟包率、时延和吞吐量的变化图中,可以看出当丟包率增加时,端到端之问的时延也在增加,而吞吐量则下降,丟包率、时延和吞吐量在表示网络性能的好坏时有一定的关系、相关代码1.络拓扑仿真脚木 simulator:tcl:#Create a simulator objectset ns [new Simulator]#Define different colors for data flows for NAM)Sns color 1 BlueSns color 2#Open the nam trace fileset nt lopen out. nam wSns namtrace-all Snfset nd [open out. tr wISns trace-all Snd#Define a finish procedureproc finish仆}{global ns nf ndSns flush-traceclose Snfclose sndexec nam out. namkit o#Create four nodesset no [Sns node]et n1 [Sns nodelset n2 [Sns nodeset n3 [ns node]#Create links between the nodesSns duplex-link Sn0 Sn2 2Mb 10ms DropTailSns duplex-link Sn1 Sn2 2Mb 10ms DropTailSns duplex- link Sn2 Sn3 1.7Mb 20ms RED#Set queue Size of link (n2-n3 to 100Sns queue-limit Sn2 Sn 3 100#Give node position(for NAm)Sns duplex-link-op SnO Sn2 orient right-downSns duplex-link-op Sn1 Sn2 orient right-upSns duplex-link-op $n2 Sn3 orient right#Monitor the queue for link(n2-n3 .( for NAM)Sns duplex-link-op Sn2 Sn 3 queuePos 0.5#Setup a TCP connectionset tcp new Agent/TCPISns attach-agent Sno Stcpset sink [new Agent/TCPSinkSns attach-agent sn3 SinkSns connect stcp SinkStcp set fid 1#Setup a FTP over TCP connectionset ftp [new Application/FTPlSftp attach-agent StcpSftp set type FTPfsetup a UdP connectionset udp [new Agent/UDP]Sns attach-agent Sn1 udpset null [new Agent/Nul]Sns attach-agent Sn3 SnullSns connect Udp SnullUdp set fid_ 2#Setup a CBr over UDP connectionset cbr [new application/Traffic/ CBRIScbr attach-agent UdpScbr set type CBrScbr set packet size 1000Scbr set rate 1mbScbr set random false#Schedule events for the cbr and ftp agentsSns at0.1 Scbr startSns at 1.0"Sftp start"Sns at 40.0"Sftp stop"Sns at 4.5"Scbr stop"#Detach tcp and sink agentsSns at 50 Sns detach-agent $no stcp; Sns detach-agent sn3 Sink"Sns at 50.0 finish#monitor n2 and n3 queueset redg [[sns link Sn2 Sn3] queueset traceq lopen redQueue tr wSredg trace curgSredg trace aveSredg attach Strace#Run the simulationns rur2.RED的数据处理脚本:SgreparedQueue. tr>averagetrStrep“Q" reqUeuetr> current tr(中 reqUeue tr为跟踪n2和n3队列产生的文件)然后使用 gnuplot工具使用 average tr和 current, tr绘制队列随时间变化的曲线3.丢包率数据awk处理脚本 graph rostRate,awvk#count the packet lost rate of cBri=0;vente=S2;from Node =$3toNode=s4:pitT$7srcAddr=$9dstAddr=$10gNum = $11if (fromNode ==1 & toNode ==2&& event==+i totalNum++timeArr[i=timesrate[i]= float)(drop Num/tif(fid==2&& event==d")dropNum++ENDprintf("#number of packet sent: %od, lost: %d"totalNum, dropNum)printf( #lost rate of packets: %f",dropNum/totalNumfor(j=0; j
- 2020-12-06下载
- 积分：1
-
IP5209IP5109IP5207IP5108寄存器手册.pdf
英集芯移动电源芯片的IIC寄存器手册，不是数据手册。支持IP5209/IP5109/IP5207/IP5108等芯片，有详细的寄存器地址说明。英集匙利技INJOINIC TECHNOLOGYP5209/P5109/P5207/P51086、12C通讯波形介绍SDANOURMSBAcknowleAcknowledgementSignal From ReceiverSignal From Receiver8Condition(S)RW ACKACK Condition(Py1 2c master写的时候,先传8bit数据,第9个bit读save返回的ack,ack为低代表写入成功,为高代表写入不成功。l2 c master读的时候,最后一个byte传输是 slave返叵数据, master返回nack(高电平),代表读结束:如果 master返回的是ack(低电平),则说明读没有结束, master会继续读所以第九个bit的ack信号要看 master端是读操作还是写操作:因为IP5209/P5109/P5108/P5207只能做save如果往1P5209/P5109/P5108/P5207寄存器写入数据,P5209/P5109/P5108/P5207返回ack为低电平;如果从P5209/P5109/P5108/P5207读取数据,IP5209/|5109/P5108/P5207返回nack高电平),( master必须发NACK,否则会有异常)代表读结束(英集匙利技INJOINIC TECHNOLOGYP5209/P5109/P5207/P51083、寄存器功能描述标示为“ Reserved”的寄存器位有特殊控制作用,不可改变原有的值,否则会出现无法预期的结果。对寄存器的操作必须按照“读-→>修改-->写”来进行,只修改要用到的bit,不能修改其他未用bit的值。1.1 SYS CTLOOffset= Ox01Bit(s)NameDescriptionR/WReset7:5Reserved手电筒检测是否使能RW1. enableO: disableLight enableRW0: disable1 enableBoost enableRW1O: disable1: enableCharger enableRWO disable1: enable0Reserved1.2 SYS CTL1Offset=0x02Bit(sNameDescriptionResetReserved轻载关机使能(0c可设定轻载关机阙|R/W值1:使能| BATLOW轻载关机功能0:关闭 BATLOW轻载关机功能负载插入自动开机R/W1:使能0:关闭英集匙利技INJOINIC TECHNOLOGYP5209/P5109/P5207/P51081.3 SYS CTL2Offset =0x0cBit(s)NameDescriptionR/WReset7:3轻载关机电流阈值设定RW00100n * 12mA当BAT电流小于设定阈值时,持续325米机注意:此电流设定阈值需要大于100mA2:0Reserved1. 4 SYS CTL3Offset=0x03it (s)NameDescriptionR/WReset7:6长按按键时间选择010:1S01:2s10:3S11:4S1:连续两次短按(两次短按在15内)R1关札功能使能O:连续两次短按(两次短按在15内)关机功能关闭4:0Reserved1.5 SYS CTL4Offset =0x04Bit(s)NameDescriptionR/WReset7:6关机时间设定R/W11:64s10:3201:16s00:8sV|N拔出是否开启 BOOST11:开启0:不开启4:0Reserved(i)英集匙利技INJOINIC TECHNOLOGYP5209/P5109/P5207/P51081.6 SYS CTLSOffset = 0x07Bit(s)NameDescriptionR/WResetReservedNNTC功能使能R/W:使能1:关闭ReservedR/W按键开关WLED于电筒方式选择:0:长按251:短按两次按键0按键关机方式选择:R/W0:短按两次按键1:长按251.7 Charger_ CTIOffset=0x22Bit(s)NameDescriptionR/WReset7:5Reserved3:2充电欠压环设定(充电时输出端voUT的R/电压)11:4.83V10:4.73V01:4.63V00:4.53V注:在充电的时候C会检测输出voUT的电压来自动调整充电电流,当VOUT的电压大于改置值时就以最大电流对充电充电,小于设定值时就自动减小充电电流以维持此电压;如果客户要求边充边放状态下可在输出端加采样电阻检测边充边放状态输出端的负载电流大于100mA时可把欠压环设置为最高,优先对外部负载充电1:0Reserved英集匙利技INJOINIC TECHNOLOGYP5209/P5109/P5207/P51081.8 Charger CTL2Offset=0x24Bit(s)NameDescriptionR/WResetReserved6:5BAT电池类型选择R/W0011: RESERVED10:4.35V电池01:43V电池00:4.2V电池4:3RESERVED2:1恒压充电电压加压设置1011:加压4210:加压28mV1:加压1400:不加压注:4.30V/4.35V建议加压14mV;4.2V建议加压28mV;如果客户需要支持44V的电芯,可以在435V电池的基础上选择加压48mV,充饱由MCU检测到电池电压大于44V,电流小于200MA才认为是电芯充饱了Reserved1.9 CHG DIG cTL4Offset = 0x26Bit(s)NameDescriptionR/WResetReserved电池类型内部寄存器设定还是外部setP|设定|RW选择1:外部 VSET PIN设置内部寄存器设置如果是该bit为0,可通过0x24寄存器的bit6:5来设定电池类型5:0Reserved英集匙利技INJOINIC TECHNOLOGYP5209/P5109/P5207/P51081.10 CHG DIG CTL4Offset=0x25Bit(s)NameDescriptionR/WReset7:5Reserved充电电流设置(设置为电氾端电流)R/W10111lbat=b0*0.1+b1*0.2+b2*0.4+b3*08+b4*1.6A注:默认值为1011123A左右1.11 MEP CTLOOffset = 0x51it (s)NameDescriptionR/WReset7:6Reserved5: 4 LIGHT selLGHT功能选择R/W0000: WLED01: GP10210: VREF11: Reserved3: 2 L4_selL4的功能选择R/W00:L401:GP|o110: Reserved11: Reserved1:0L3_seL3的功能选择R/W01: GPIO010: Reserved11: Reserved1.12 MFP CTL1Offset=0x52sit(s)NameDescriptionR/WReset7:4ReservedR/W3: 2 VSET selVSET功能选择W0000:电池电压选择PN)英集应利P5209/P5109/P5207/P510801: GP10410: Reserved11: Reserved1: 0 RSET seRS氏T功能选择R/W0000:电池内阻选择PN01:GP|O310: Reserved11: Reserved1.13 GPIO CTL2Offset =0x53 default oxoBit(sNameDescriptionR/WReset7:5Reserved4:0 GPIO_ INEN GPIO[4: 0]input enableRW00: Disable1: Enable1.14 GP0 CTL2Offset= Ox54 default oxoBits)NameDescriptionR/WReset7:5Reserved4: 0 GPIO_OUTEN GPIO[4: ]output enableRW00: Disable1: Enable在丌启 Output之前,需要先将data配好1.15 GPO CTL3Offset =0x55Bit(s)NameDescriptionR/w Reset7:5Reserved4:0 GPIO DATGPIO[4: 0]DATAR/W0(i)英集匙利技INJOINIC TECHNOLOGYP5209/P5109/P5207/P51082.1 BATVADC DATOOffset =Oxa2Bit(s)NameDescriptionR/WReset7:0 BATVADO7:| BATVADC数据的低8bitRO2.2 BATVADC DAT1Offset Oxa3Bit(s)NameDescriptionR/VReset7:6Reserved5:0 BATVADC[13: BATVADC数据的高6btR8]VBAT=BATVADC*0. 26855mv+2.6VBATVADC VALUE low =l2C Read Byte( 12C SLAVE ADDR, Oxa2);//low 8bitBATVADC VALUE high=12c Read Byte(I2C SLAVE ADDR, Oxa3); //high 6bitf( BATVADC VALUE high&0x20)=0x20)//补码BATVOL[=2600-("BATVADC VALUE low +((BATVADC vaLUe high & 0x1F)*256+1)*0.26855else//原码BATVOL[]=2600+(BATVADC VALUE low+BATVADC_ VALUE high *256)*0.26855; //mv 24i
- 2020-12-11下载
- 积分：1
-
用C语言实现polyfit函数
用C语言实现polyfit多项式拟合,已知离散点上的数据集，即已知在点集上的函数值，构造一个解析函数（其图形为一曲线）使在原离散点上尽可能接近给定的值。
- 2020-12-03下载
- 积分：1
-
labview采样程序
此程序在labview上运行，labview可以通过采集卡，采集需要的信号
- 2020-12-11下载
- 积分：1
-
openvr for double
openvr for double,对于openvr的修改，支持向本机发送数据，详情见作者博客
- 2020-12-04下载
- 积分：1
|
联系客服（QQ：3324461878）
