初中物理公式大全(沪科版).doc

Manipulator is now used as a industrial robots in use, the control objectives often appear often in industrial automation. Industrial automation technology has gradually matured, as mature a technology line has been rapid development in industrial automation as a separate subject. Manipulator application began to filter into welding, logistics, mechanical processing, and other industries. Especially at high or very low temperatures, full of poisonous gases, high radiation case, robot in similar circumstances showed great use also brings great convenience to the staff. Precisely because of this robot to get peoples attention began to be a high degree of development. Labor rates, working conditions, labor intensive aspects of promoting development. Both at home and abroad to develop the PLC (programmable logic controller) is in various special circumstances and under special conditions set for mechanical devices. Now turned on the development of the microelectronics automatic control technology and the rapid development of the trains, the success of PLC hardware software and simulation control win big and successful development, now continues to develop as a factory automation standards. Because robots are good development of the technology makes a good optimization of productive capital, and robot shows this unique advantages, such as: has good compatibility, wide availability, hardware is complete, and programming that can be mastered in a short time, so in the context of industrial PLC applications became ubiquitous. Manipulator in many developed country agriculture and industry has been applied, such as the use of mechanical harvesting large areas of farmland, repeated operations on the high-speed line that uses a robotic arm, and so on. Today, the high level of automation combined with restrictions on the manipulator development level is slightly lower than the international. The design is mainly arm welding machine by PLC Automation control. This of design let designers on in school by learn of has a must of consolidation, understand has some usually didnt opportunities awareness in world range within some leading level of knowledge has has must awareness, hope designers can in yihou of design in the can success of using in this design in the proceeds of experience 1.2 manipulator in both at home and abroad of research profile automation mechanical arm research began Yu 20th century medium-term, after years with with computer and automation technology of development, Makes mechanical arm on the Grand stage of industrial automation and shine, gradually became an industrial evaluation standards, and its importance can be seen. Now original robotic arm spent most of mass production and use on the production line, which is programmed robotic arm. As the first generation of manipulator position control systems main features, although not back several generations that can detect the external environment, but can still successfully complete like welding, painting, delivery as well as for materials simple movements. Second generation mechanical arms are equipped with sensors and manipulators have the environment there is a certain amount of sense, when the mechanical arm is to use the program as a basis. Difference is that the robot begand5初中物理公式大全参照沪科版排列，并标明公式在书中的页码，部分公式书中未明确呈现，属于课堂笔记注意：书本是根本，本资料属于复习时的参考，最好的复习是把书本看一遍。八年级物理 力学部分：一、速度公式（第二章p27）物理量计算式国际主单位常用单位换算关系速度vvs/tm/skm/h1m/s3.6km/h路程ssvtmkm1km1000m时间tts/vsh1h60min3600s二、重力公式（第五章p92）Gmg (G:重力N，m：质量kg，g：常g取10N/kg，题目未交待时g取9.8N/kg) 三、同一直线上力的合成（第六章p112）方向相同：F合=F1+F2 ； 方向相反：F合=F1F2 （F：力N）四、密度公式（第七章p128）物理量计算式国际主单位常用单位换算关系密度m/vkg/ m3g/ cm31g/ cm31000kg/ m3质量mmvkgg1kg1000g体积VVm/ m3Cm31 m3103dm3106cm3 1L103ml(cm3)冰与水之间状态发生变化时m水m冰 水冰 v水v冰 5、 浮力公式（第七章）（1）F浮GF (称重法) （2）F浮G (漂浮、悬浮法)（p137）（3）阿基米德原理：F浮=G排m排g=液g V排 （排水法）（p134）（F浮：浮力N，G排：排开的液体所受重力N，m排：排开的液体的质量kg，液：液体密度kg/ m3，V排：排开液体的体积m3，g：10N/kg或9.8N/kg）六、压强公式（第八章） （1）普适公式（p143） （p：压强Pa，F：压力N，S：受力面积m2）固体平放时FGmg（2） 液体压强公式（p149）pgh （p：液体压强Pa ；：液体的密度kg/ m3；h：深度：从液面到该点的竖直距离m ） 七、杠杆的平衡条件（第九章p166） F1l1F2l2 （ F1：动力N；L1：动力臂；F2：阻力N； L2：阻力臂，L1、L2应同单位） 八、滑轮（组）公式（第九章p171-173）（不计绳重和摩擦）（1）定滑轮： F=G物 s=h （F：绳子自由端受到的拉力N； G物：物体的重力N； s：绳子自由端移动的距离m； h：物体升高的距离m）（2）动滑轮： S=2h （F、s、h、G物：同上， G动：动滑轮的重力N） （3）滑轮组： snh（n：有n段绳子承担物重，其余同上）九、功、功率、机械效率（第九章）（1）功 a、普适WFs （W：功J，F：力N，s：在力的方向上移动的距离m)（p176）b、把物体举高时WGh c、通过功率计算 WPt （2）功率（p179） (P：功率W；t：时间s；F、 s：同上，v：速度m/s）（3） 有用功（p181） W有Fs=Gh（与功相同） W有W总W额（有用功总功额外功）（4）总功（p181）W总FS (F：总动力，s:在力的方向上移动距离）W总 W有W额 （5）机械效率（p181） （:机械效率，一定小于1）九年级物理 热学部分（第十一、十二章）1、吸热、放热（p35）Q吸或Q放cmt（c：物质的比热容J/kg； m：质量kg ；t：温度的变化值 ）2、热值（p43）Q=mq（固体、液体）Q=Vq（气体）（m：质量kg， q：热值J/kg或J/m3，V：体积m3）3、热机效率：（p45）4、热力学温度（p26） Tt273K（T热力学温度k；t：摄氏温度）（不要求掌握）九年级物理 电学部分（第十三、十四、十五章）1、 电流定义式（p62）：（I：电流A，Q：电荷量C，t：时间s）（不要求掌握）2、电阻（p77）（不要求掌握） （表示材料的电阻率m，L表示电阻的长度m，S表示电阻横截面积m2 ）3、欧姆定律：电路中的电流与电压成正比，与电阻成反比（p84） （U：电压V, I：电流A, R：电阻）4、电功公式（p104）（1）普适公式W=UIt（W：电功J，U：电压V, I：电流A, R：电阻，t：时间s）（2）纯电阻公式（焦耳定律） 5、电功率：（1）普适公式 （P：电功率W或kW，W：电功J或kWh，t：时间s或h）P=UI （P：电功率W，U：电压V, I：电流A）（2）纯电阻公式 6、 串联电路的特点：（1）各处电流相等 II1I2（p66）（2）总电压等于各部分电路两端电压之和 UU1U2（p72）（3） 总电阻等于各分电阻之和 R总R1R2（p90） 当n个阻值相同的R串联时，（4） 串联分压：各部分电压比等于电阻比（p93）由此可得，当R1、R2串联，t相同时 （p107）7、并联电路的特点：（1）干路电流等于各支路电流之和 II1I2（p68）（2）各支路两端的电压相等，一般等于电源电压 UU1U2（p72）（3）总电阻的倒数等于各分电阻的倒数之和 当n个阻值相同的R并联时，（p92）（4）并联分流：各支路电流比等于电阻的倒数比（p93）由此可得，当R1、R2并联，t相同时 （p107）8、电磁波波速与波长、频率的关系（第十八章p150） c= （c：波速（电磁波的波速是不变的，等于3108m/s）；：波长m；：频率Hz ）常用物理量1、 光速：c3108m/s (真空中) 2、声速：v340m/s (15)3、标准大气压值：760毫米汞柱101105Pa 4、一节干电池电压：1.5V5、水的密度10103kg/m 冰的熔点0 水的沸点100 比热容：c42103J/(kg) 6、一节铅蓄电池电压：2V 7、对于人体的安全电压：36V（不高于36V）8、家庭电路电压：220V 9、单位换算 1kwh36106Jmanipulator control mode and programmable controllers introduction 2.1 Select discussion with manipulator control 2.1.1 classification of control relays and discrete electronic circuit can control old industrial equipment, but also more common. Mainly these two relatively cheap and you can meet the old-fashioned, simple (or simple) industrial equipment. So he can see them now, however these two control modes (relay and discrete electronic circuits) are these fatal flaws: (1) cannot adapt to the complex logic control, (2) only for the current project, the lack of compatibility and (3) not reforming the system with equipment improvements. Spring for the development of Chinas modern industrial automation technology the substantial increase in the level of industrial automation, completed the perfect relay of the computer too much. In terms of controlling the computer showed his two great advantages: (1) each of the hardware can be installed on one or more microprocessors; (2) the official designer of the software writing content control is all about. Now in several ways in the context of industrial automation can often be seen in three ways: (1) Programmable Logical Controller (referred to as IPC); (2) Distributed Control System (DCS for short), and (3) the Programmable Logical Controller (PLC for short). 2.1.2 PLC and the IPC and DCS contrast contrast 1, each of the three technologies of origins and development requirements for fast data processing makes it invented the computer. The men brought in terms of hardware there, using a high level of standardization, can use more compatibility tools, is a rich software resources, especially the need for immediacy in operational systems. So the computer can effectively control is used to control and meet its speed, on the virtual model, real-time and in computational requirements. Distributed system started with a control system for industrial automatic instrument used to control,