毕业设计
....................................................20 第 一 章、 设计任务书 1 设计项目 : 牵引式送线机 2 设计目的 : 通过完成设计项目使学员比较系统的运用在校期间课程中所学的机械设计、机械制造、液压传动、机械制图及 CAD 绘图、材料及热处理等知识 ,结合实际应用需求完成牵引式送线机的设计 ,达到是学员巩固理论知识 ,
The catalysts used are generally Group VIII metals such as cobalt or copper. The leaching of these metals into the aqueous phase is a difficulty that inhibits the general use of heterogeneous
he period. Energy crisis in early 70s driven the US postal service placed a large order of 350 EV test fleet. It is the highest node of midterm development. However, partly due to limited performance
Architecture Generally each CAN module can be divided into different functional blocks. The connection to the CAN bus lines is usually built with a CAN Transceiver optimized for the applications [3],
stances, the quantity of energy source is limited. unlimited usage of energy source results in energy crisis. At present, most of the energy consumed by humans is produced from fossil fuels. The
或 VCC2 两者中的较大者供电。 所以在主电源关闭的情况下，也能保持时钟的连续运行。 X1 和 X2 是振荡源，外接 晶振用来为芯片提供计时脉冲。 RST 是复位 /片选线，通过把 RST 输入驱动置高电平来启动所有的数据传送。 RST 输入有两种功能：首先， RST 接通控制逻辑，允许地址 /命令序列送入移位寄存器；其次， RST 提供终止单字节或多字节数据的传送手段。 当 RST
T=65536N= 65536 fi/2/fr 音乐播放程序 播放“不倒翁”歌曲的程序 BUZZ EQU P1 BUZZ1 EQU ORG 0000H LJMP MAIN ORG 000BH LJMP INT_T0 ORG 001BH LJMP TIME1 ORG 8000H MAIN: MOV SP,90H MOV BUZZ,0FFH MOV TMOD,11H SETB ET0 SETB
ified by simulations. Key words: Linear induction motor (LIM), Fieldoriented control, End effect INTRODUCTION The linear inductance motor (LIM) is used in such lowspeed Maglev system as HSST system
v e n tim e which is Faraday’s law applied to a finite time interval. It follows that Eavg = N 21/(2 )mf = 4fNφm which N is the number of turns on the winding. Form ac circuit theory, the effective
plies this power to the load. This action is known as transformer action. 3. TRANSFORMER PRINCIPLES When a sinusoidal voltage Vp is applied to the primary with the secondary opencircuited, there will