Machine learning is a broad and fascinating field. Even today, machine learning technology runs a substantial part of your life, often without you knowing it. Any plausible approach to artifi- cial intelligence must involve learning, at some level, if for no other reason than it’s hard to call a system intelligent if it cannot learn. Machine learning is also fascinating in its own right for the philo- sophical questions it raises about what it means to learn and succeed at tasks.
标签: Learning Machine Course in
上传时间: 2020-06-10
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The past decade has seen an explosion of machine learning research and appli- cations; especially, deep learning methods have enabled key advances in many applicationdomains,suchas computervision,speechprocessing,andgameplaying. However, the performance of many machine learning methods is very sensitive to a plethora of design decisions, which constitutes a considerable barrier for new users. This is particularly true in the booming field of deep learning, where human engineers need to select the right neural architectures, training procedures, regularization methods, and hyperparameters of all of these components in order to make their networks do what they are supposed to do with sufficient performance. This process has to be repeated for every application. Even experts are often left with tedious episodes of trial and error until they identify a good set of choices for a particular dataset.
标签: Auto-Machine-Learning-Methods-Sys tems-Challenges
上传时间: 2020-06-10
上传用户:shancjb
基于NE555设计的声音传感器模块ALTIUM硬件原理图+PCB文件,2层板设计,大小为29x30mm,Altium Designer 设计的工程文件,包括原理图及PCB文件,可以用Altium(AD)软件打开或修改,可作为你的产品设计的参考。主要器件型号列表如下:Library Component Count : 8Name Description----------------------------------------------------------------------------------------------------2N3904 NPN General Purpose AmplifierCap CapacitorComponent_1_1 Header 3H Header, 3-Pin, Right AngleLED3 Typical BLUE SiC LEDMKF 麦克风Res 电阻Res2 Resistor
上传时间: 2021-11-17
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AT89S52-24单片机最小系统开发板ALTIUM设计硬件原理图+PCB文件,2层板设计,大小为121x149mm,Altium Designer 设计的工程文件,包括完整的原理图及PCB文件,可以用Altium(AD)软件打开或修改,可作为你的产品设计的参考。主要器件型号列表如下:Library Component Count : 14Name Description----------------------------------------------------------------------------------------------------AT89S52-P 8 位微处理器/40引脚CAP CapacitorCAPACITOR POL CapacitorCRYSTAL CrystalD Connector 9 Receptacle Assembly, 9 Position, Right AngleHeader 2 Header, 2-PinHeader 4 Header, 4-PinHeader 5X2 Header, 5-Pin, Dual rowLED MAX232PZ_9 排针——9RES2SW-DPST Double-Pole, Single-Throw SwitchSW-PB Switch
上传时间: 2021-11-17
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AT89S52单片机主8入8出继电器工控主板ALTIUM设计硬件原理图+PCB文件,2层板设计,大小为121x149mm,Altium Designer 设计的工程文件,包括完整的原理图及PCB文件,可以用Altium(AD)软件打开或修改,可作为你的产品设计的参考。主要器件型号列表如下:Library Component Count : 25Name Description----------------------------------------------------------------------------------------------------24LC02AJKG 按键开关AT89S52-P 8 位微处理器/40引脚CAP CapacitorCAPACITOR POL CapacitorCPDR 瓷片电容CRYSTAL CrystalD Connector 9 Receptacle Assembly, 9 Position, Right AngleDG 电感DJDR 电解电容GO 光耦Header 5X2 Header, 5-Pin, Dual rowJDQYCK 继电器——1常开1常闭LED 发光二极管LM2576HVT-3.3 Simple Switcher 3A Step Down Voltage RegulatorMAX232 NPN NPN Bipolar TransistorPZ_2 排针——2PZ_3 排针——3RES2Res 电阻Res PZ_8 8位排阻SW-DPST Double-Pole, Single-Throw SwitchWY2JG 稳压二级管ZL2JG 整流二极管
上传时间: 2021-11-17
上传用户:kingwide
一份极好PCB的EMC设计指南 这是一份关闭PCB方面EMC的一些讲解,里面对应PCB设计讲得比较详细,对于从事PCB设计相关的人,可以学习一下。
标签: emc
上传时间: 2022-01-28
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本书是 Marc Thompson 博士 20 年模拟电路设计和教学经验的总结,讲述了模拟电路与系统设计中常用的直观分析方法。本书提出了“模拟电路直观方法学”,力图帮助学生和设计人员摆脱复杂的理论推导与计算,充分利用直观知识来应对模拟电路工程设计挑战。全书共分为 16 章,内容涵盖了二极管、晶体管、放大器、滤波器、反馈系统等模拟电路的基本知识与设计方法。本书大纲第 1 章与第 2 章为介绍性材料。第 1 章是本书的引言,同时介绍了模拟电路设计的发展动机,其中引用了一些精选的历史事件。第 2 章讲述后续章节中用到地重要的信号处理概念,以使读者们能够跟上作者的思路。第 3 章至第 8 章讲述双极性器件的物理学原理、双极性结型晶体管 (bipolar junction transistor, BJT) 、晶体管放大器,以及用于带宽估计与开关速度分析的近似技术。第 9 章讲述 CMOS 管和 CMOS 管放大器的基础知识。前面章节介绍的用于放大器设计的带宽估计技术也同样适用于 CMOS 管器件。第 10 章讲述 晶体管的开关效应。晶体管是如何实现导通和关闭呢?又如何估计它的开关速度呢?第 11 章回顾反馈系统 (feedback system) 的基本知识以及设计稳定反馈系统的伯德图 / 相位裕度方法 (Bod plot / phase margin) 。第 12 章和第 13 章讲述实际运算放大器的设计、使用和限制,包括电压反馈 (voltage-feedback) 以及电流反馈 (current-feedback) 放大器。第 14 章讲述模拟低通滤波器设计的基本知识,包括巴特沃思 (Butterworth) 、切比雪夫 (Chebyshev) 、椭圆 (elliptic) 以及贝塞尔 (Bessel) 滤波器的无源梯形实现和胡源实现。第 15 章讲述实际电路设计问题,比如 PCB 版图设计规则、无源器件的使用和限制等。第 16 章是一些有用的设计技术和设计技巧的大杂烩,这些内容又不适合放在其他章节,所以作为独立的章节进行讲述。一些说明性的分析问题以及 MATLAB 和 SPICE 设计示例点缀在全书的字里行间,以帮助读者理解本书的内容。
标签: 模拟电路
上传时间: 2022-02-14
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以STC12C5A60S2单片机为控制核心,采用2.4G(JF24D)无线遥控模块进行无线发射与接收,设计了一种双电机遥控船模控制系统.该系统通过切换档杆实现前进后退,方向盘左右转动、暂停按钮等控制直流电机的正转、反转、暂停,使得电机驱动的遥控船模实现前进后退、左右转向、暂停等功能,有效解决了驱动功率小和船模之间相互干扰等问题,可广泛应用于遥控船模领域.Using STC12C5A60S2 single-chip microcomputer as the controller and 2.4 G(JF24D)wireless remote control module for wireless transmission and reception, a dual-motor remote control ship model control system is designed. The system realizes forward and backward by switching the gear lever. The steering wheel rotates left and right and the pause button controls the forward, reverse and pause of the dc motor. The remote controller of ship model driven by the motor realizes forward and backward, left and right steering, pause and other functions. The ship model control system can effectively solve the problems of small driving power and mutual interference between ship models, and can be widely used in the field of remote controller of ship model.
上传时间: 2022-03-27
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說明:1,测试交流电源(Test AC Power Supply):A.中国(China):AC 220V+/-2%50Hz+/-2%B.美国(United States of America):AC 120V+/-2%60Hz+/-2%。C.英国(Britain):AC 240V+/-2%50Hz+/-2%D.欧洲(Europe):AC 230V+/-2%50Hz+/-2%E.日本(Japan):AC 100V+/-2%60Hz+/-2%F.墨西哥(Mexico):AC 127V+/-2%60Hz+/-2%2,测试温度条件(Test Temperature Conditions):25℃+/-2℃。3,测试以右声道为准(Standard Test Use Right Channell)4,信号由AUX插座输入(Signal From AUX Jack Input)。5,测试以音量最大,音调和平衡在中央位置(电子音调在正常状态)。(Test Volume Setup Max,Equalizer And Balance Setup Center)。6,标准輸出(Standard Output):A.输入1 KHz频率信号(Input 1 KHz Frequency Signal)B.左右声道输入信号测试右声道(L&R Input Signal Test Use R Channel)C.额定输出功率満(Rating Output Power Full)10 W,标准输出定为1w.(Rating Output Power Full 10 w,Standard Output Setup 1 W)D.额定输出功率1W到10w,标准输出定为500 mW(Rating Output Power 1 W To 10 W,Standard Output Setup 500 mW)E.额定输出功率小于1w,标准输出定为50 mW(Rating Output Power Not Full 1 W,Standard Output Setup 50 mW)F.标准輸出电压以V-VPR为准(Standard Output Voltage Use V-V/PR)。G.V-V/PR中P为额定输出功率,R为喇叭标称阻抗。
标签: 音响功放
上传时间: 2022-06-18
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上传时间: 2022-06-25
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