我开始学习ATPDraw5.5碰到的第一个问题
我是69岁学跌打，我刚刚开始学习ATPDraw5.5，是网友给我的，我真是一窍不通，我在一边看ATPDraw中文版本1.0的说明书，一边从最简单的电工原理来仿真，你们别以为我很精通，说实在，我真是不太懂，我还准备向网上发贴请教呢？我96年学习马老师的ATP-EMTP的软件时，我从电工基础入门，看看，该软件是否符合电工原理，我做了最简单RLC振荡回路：一个交流电源，经过一个开关（－1秒合上，0.04秒分；）接于母线MX；母线再接一个开关（0.06秒合上，1.0秒分）；此开关下，接一个电阻、一个电感，电感另一端接地；母线再接一个电容器，电容器的另一端接地。我仿真出：电容器在充电后，电流向电阻、电感的放电过程。调整电阻的大小，可以仿真出等幅振荡、减幅振荡。看电源电压、看母线电压、看母线到电阻电感支路的电流。
然而，我从网友哪里获得的ATPDrow5，我已经学习了4天了，我一边看ATPDrowfor windows 1.0版本中文说明书、一边自己摸索，做了就是不成功！
我是第一次建立ATPDrow图，已经生成SZY01.acp,然而，我不会把这个图粘贴到这里。试验做了好几次，都以失败而告终。
我请教了白风先生，他认为可能设置有问题。
看来用集中参数RLC，把L、C＝0 就算R；RLC，把R、L＝0就算L ；RLC，把R、L、＝0就算C；在ATPDraw5.5中仿真会得到不同的结果。
请教，各位了。 本帖最后由 dongchch 于 2009-8-20 15:30 编辑
强烈提议舒芝运老师为本版形象代言人！
代言语录: 这么多年了我一直在坚持， ATP- 今天你用了没有?
现面向全体学友，继续征收其他代言语录 开个玩笑，希望舒老师不要介意。无论如何，69岁决定学习一个英文软件，都是值得让人钦佩的。如果大家经常浏览论坛的话，就会发现舒老师绝对是喜欢把问题钻研透彻的人，希望这个帖子会对所有的入门者受益。 我刚开始学习的时候，也是先自己搭一个震荡电路。对所有入门者，都可以先尝试把电工理论中的习题在atpdraw里试验一下。 从您贴出的图中可以看到，首先有结果了，说明电路可以计算，但是明显模拟时间过短，没有出现全部的波形，可能您设置L,C的震荡周期过大了，可以增加模拟时间比如到1秒，或是改变L,C 值再看一下。 我把10年前的老套统又翻出来。一个是DAT文件；一个是今天重新做的OUT文件。因为，我电脑使用也特别差，纯MS-DOS下波形曲线我没有办法传上来。我回忆，它在运行结速时会有一个？？？.pl4文件。我又去看破电脑，确实我看见了有Plot.pl4文件，是09082013：45今天生成。我在想，用一位版主帮助我的TOP软件，不知是否能读出？！
我就感到奇怪，马教授的96年软件，能够用集中参数R L C仿真模拟电容器向电阻、电感充放电的暂态过程，怎么ATPDraw5.5不行呢？
肯定，是老头没有认真学习说明书！！！BEGIN NEW DATA CASE
C BECNHMARK CRLZT.DATDT=50VS JSSJ=0.4S 4TDYQX ZT 10KVXTQXYY AXDK
C FIX SOURCE
.00005.8 50.0
1 1 0 1 1 -1 0 2 0 0
10 10 100 100 1000 1000
MX 318.47
R1 RL 10.0
RL 1000.
BLANK CARD ENDING BRANCHES CARDS OF -TC- CASE
DY MX -1.0 0.04 100.
MX R1 0.06 1.04 100.
BLANK CARD ENDING SWITCHES CARDS OF -TC- CASE
C 14DYA -1 9.14e5 50.0 -15.0 -1.0 5.1
C 14DY -1 -9.14e5 50.0 -15.0 -1.0 5.1
C 14DYB -1 9.14e5 50.0-135.0 -1.0 5.1
C 14DY -1 -9.14e5 50.0-135.0 -1.0 5.1
C 14DYC -1 9.14e5 50.0-255.0 -1.0 5.1
C 14DY -1 -9.14e5 50.0-255.0 -1.0 5.1
14DY 91400.0 50.0 0.0 -1
C 14DYB 93897.0 50.0 -120. -1
C 14DYC 93897.0 50.0 120.0 -1
BLANK CARD ENDING SOURCE CARDS
DY MX
-1MX R1
BLANK CARD ENDING SELECTED NODE VOLTAGE OUTPUT CARDS
14410. 200. DY MX
14401.000.800. DY MX
14401.000.400. DY MX
14401.000.200. DY MX
19401.000.800. MX R1
19401.000.400. MX R1
19401.000.200. MX R1
BLANK CARD ENDING PLOT CARDS
BEGIN NEW DATA CASE
BLANK
ELECTROMAGNETIC TRANSIENTS PROGRAM (EMTP386) TIME =08/20/0913.57.13 PLOT FILE = PLOT.PL4
ASSOCIATED USER DOCUMENTATION IS THE 864-PAGE EMTP RULE BOOK DATEDJUNE, 1984. VERSION M40. VARDIM TIME/DATE =1637223 960610
INDEPENDENT LIST LIMITS FOLLOW. TOTAL LENGTH OF /LABEL/ EQUALS1637223INTEGER WORDS. 2002450045001500 90000
8002500 90000 250 80015001500 300 9 50 10000 1000030005400 90000 918005000 300
--------------------------------------------------+--------------------------------------------------------------------------------
DESCRIPTIVE INTERPRETATION OF NEW-CASE INPUT DATA 1 INPUT DATA CARD IMAGES PRINTED BELOW, ALL 80 COLUMNS, CHARACTER BY CHARACTER.
0 1 2 3 4 5 6 7 8
0 0 0 0 0 0 0 0 0
--------------------------------------------------+--------------------------------------------------------------------------------
MARKER CARD PRECEDING NEW DATA CASE. 1BEGIN NEW DATA CASE
COMMENT CARD. 1C BECNHMARK CRLZT.DATDT=50VS JSSJ=0.4S 4TDYQX ZT 10KVXTQXYY AXDK
COMMENT CARD. 1C FIX SOURCE
MISC. DATA. 0.500E-04 0.800E+00 0.500E+021 .00005.8 50.0
----- WARNING. NONZERO MISC. DATA PARAMETER "XOPT" DIFFERS FROM THE POWER FREQUENCY OF 60.00 . THIS IS UNUSUAL.
A VALUE OF 0.5000E+02 WAS READ FROM COLUMNS 17-24 OF THE DATA CARD JUST READ. EXECUTION WILL CONTINUE USING
THIS VALUE, AS SUSPICIOUS AS IT SEEMS TO THE EMTP
MISC. DATA. 1 1011 -10200 1 1 1 0 1 1 -1 0 2 0 0
PRINTOUT : 10 10 100 10010001000 1 10 10 100 100 1000 1000
SERIES R-L-C. 0.000E+000.000E+000.318E+031MX 318.47
SERIES R-L-C. 0.100E+020.000E+000.000E+001R1 RL 10.0
SERIES R-L-C. 0.000E+000.100E+040.000E+001RL 1000.
BLANK CARD TERMINATING BRANCH CARDS. 1
SWITCH. -0.10E+010.40E-010.10E+030.00E+00 1DY MX -1.0 0.04 100.
SWITCH. 0.60E-010.10E+010.10E+030.00E+00 1MX R1 0.06 1.04 100.
BLANK CARD TERMINATING SWITCH CARDS. 1
COMMENT CARD. 1C 14DYA -1 9.14e5 50.0 -15.0 -1.0 5
COMMENT CARD. 1C 14DY -1 -9.14e5 50.0 -15.0 -1.0 5
COMMENT CARD. 1C 14DYB -1 9.14e5 50.0-135.0 -1.0 5
COMMENT CARD. 1C 14DY -1 -9.14e5 50.0-135.0 -1.0 5
COMMENT CARD. 1C 14DYC -1 9.14e5 50.0-255.0 -1.0 5
COMMENT CARD. 1C 14DY -1 -9.14e5 50.0-255.0 -1.0 5
SOURCE. 0.91E+050.50E+020.00E+00 -0.10E+01 114DY 91400.0 50.0 0.0 -1
COMMENT CARD. 1C 14DYB 93897.0 50.0 -120. -1
COMMENT CARD. 1C 14DYC 93897.0 50.0 120.0 -1
BLANK CARD TERMINATING SOURCE CARDS. 1
PI-EQUIV BRANCHES OF DISTRIB LINES IN TR, TX, ETC.BETWEEN LIMITS 4 3
SINUSOIDAL STEADY STATE SOLUTION, BRANCH BY BRANCH.ALL FLOWS ARE AWAY FROM BUS, AND REAL PART, MAGNITUDE, OR P
IS PRINTED ABOVE THE IMAGINARY PART, THE ANGLE, OR Q. FIRST SOLUTION FREQUENCY = 0.500000000E+02 HERTZ.
BUS K NODE VOLTAGE BRANCH CURRENT POWER FLOW POWER LOSS
BUS M RECTANGULAR POLAR RECTANGULAR POLAR P AND Q P AND Q
MX 0.9140000E+050.9140000E+05 0.0000000E+000.9144598E+04 0.0000000E+000.0000000E+00
0.0000000E+00 0.0000 0.9144598E+04 90.0000 -0.4179081E+09 -0.4179081E+09
TERRA 0.0000000E+000.0000000E+00 0.0000000E+000.9144598E+04 0.0000000E+00
0.0000000E+00 0.0000 -0.9144598E+04 -90.0000 0.0000000E+00
R1 0.0000000E+000.0000000E+00 0.0000000E+000.0000000E+00 0.0000000E+000.0000000E+00
0.0000000E+00 0.0000 0.0000000E+00 0.0000 0.0000000E+000.0000000E+00
RL 0.0000000E+000.0000000E+00 0.0000000E+000.0000000E+00 0.0000000E+00
0.0000000E+00 0.0000 0.0000000E+00 0.0000 0.0000000E+00
RL 0.0000000E+000.0000000E+00 0.0000000E+000.0000000E+00 0.0000000E+000.0000000E+00
0.0000000E+00 0.0000 0.0000000E+00 0.0000 0.0000000E+000.0000000E+00
TERRA 0.0000000E+000.0000000E+00 0.0000000E+000.0000000E+00 0.0000000E+00
0.0000000E+00 0.0000 0.0000000E+00 0.0000 0.0000000E+00
TOTAL NETWORK LOSS "PLOSS" BY SUMMING NODAL INJECTIONS =0.00000000E+00
OUTPUT FOR STEADY STATE SWITCH CURRENT
NODE-K NODE-M I-REAL I-IMAG I-MAGN DEGREES POWER REACTIVE
DY MX 0.00000000E+00 0.91445975E+04 0.91445975E+04 90.0000 0.00000000E+00 -0.41790811E+09
MX R1 OPEN OPEN OPEN OPEN OPEN
SOLUTION AT NODES WITH KNOWN VOLTAGE. NODES SHORTED TOGETHER BY SWITCHES ARE SHOWN AS A GROUP OF NAMES, WITH
THE PRINTED RESULT APPLYING TO THE COMPOSITE GROUP. THE ENTRY 'MVA' ISSQRT(P**2 + Q**2)IN UNITS OF POWER,
WHILE'P.F.'IS THE ASSOCIATED POWER FACTOR.
NODE SOURCE NODE VOLTAGE INJECTED SOURCE CURRENT INJECTED SOURCE POWER
NAME RECTANGULAR POLAR RECTANGULAR POLAR P AND Q MVA AND P.F.
DY
MX 0.9140000E+050.9140000E+05 0.0000000E+000.9144598E+04 0.0000000E+000.4179081E+09
0.0000000E+00 0.0000 0.9144598E+04 90.0000 -0.4179081E+090.0000000E+00
CARD OF BUS NAMES FOR NODE-VOLTAGE OUTPUT. 1DY MX
CARD OF BRANCH VOLTAGE, CURRENT ...OUTPUT. 1-1MX R1
BLANK CARD ENDING NODE NAMES FOR VOLTAGE OUTPUT.1
COLUMN HEADINGS FOR THE 3EMTP OUTPUT VARIABLES FOLLOW. THESE ARE ORDERED ACCORDING TO THE FIVE
POSSIBLE EMTP OUTPUT-VARIABLE CLASSES, AS FOLLOWS ....
FIRST 2OUTPUT VARIABLES ARE ELECTRIC-NETWORK NODE VOLTAGES (WITH RESPECT TO LOCAL GROUND)|
NEXT 0OUTPUT VARIABLES ARE BRANCH VOLTAGES (VOLTAGE OF UPPER NODE MINUS VOLTAGE OF LOWER NODE)|
NEXT 1OUTPUT VARIABLES ARE BRANCH CURRENTS (FLOWING FROM THE UPPER EMTP NODE TO THE LOWER)|
NEXT 0OUTPUT VARIABLES PERTAIN TO DYNAMIC SYNCHRONOUS MACHINES, WITH NAMES GENERATED INTERNALLY|
FINAL 0OUTPUT VARIABLES BELONG TO'TACS'(NOTE INTERNALLY-ADDED UPPER NAME OF PAIR).
BRANCH POWERCONSUMPTION (POWERFLOW, IF A SWITCH) IS TREATED LIKE A BRANCH VOLTAGE FOR THIS GROUPING|
BRANCH ENERGY CONSUMPTION (ENERGY FLOW, IF A SWITCH) IS TREATED LIKE A BRANCH CURRENT FOR THIS GROUPING.
STEP TIME DY MX MX
R1
*** PHASOR I(0) =0.0000000E+00 SWITCH "DY " TO "MX " CLOSED AFTER 0.00000E+00 SEC.
0 0.000000 0.914000E+05 0.914000E+05 0.000000E+00
1 0.000050 0.913887E+05 0.913887E+05 0.000000E+00
2 0.000100 0.913549E+05 0.913549E+05 0.000000E+00
3 0.000150 0.912985E+05 0.912985E+05 0.000000E+00
4 0.000200 0.912196E+05 0.912196E+05 0.000000E+00
5 0.000250 0.911182E+05 0.911182E+05 0.000000E+00
6 0.000300 0.909944E+05 0.909944E+05 0.000000E+00
7 0.000350 0.908480E+05 0.908480E+05 0.000000E+00
8 0.000400 0.906793E+05 0.906793E+05 0.000000E+00
9 0.000450 0.904882E+05 0.904882E+05 0.000000E+00
10 0.000500 0.902747E+05 0.902747E+05 0.000000E+00
20 0.001000 0.869266E+05 0.869266E+05 0.000000E+00
30 0.001500 0.814380E+05 0.814380E+05 0.000000E+00
40 0.002000 0.739442E+05 0.739442E+05 0.000000E+00
50 0.002500 0.646296E+05 0.646296E+05 0.000000E+00
60 0.003000 0.537236E+05 0.537236E+05 0.000000E+00
70 0.003500 0.414947E+05 0.414947E+05 0.000000E+00
80 0.004000 0.282442E+05 0.282442E+05 0.000000E+00
90 0.004500 0.142981E+05 0.142981E+05 0.000000E+00
100 0.005000-0.552882E-10-0.552882E-10 0.000000E+00
200 0.010000-0.914000E+05-0.914000E+05 0.000000E+00
300 0.015000-0.164038E-08-0.164038E-08 0.000000E+00
400 0.020000 0.914000E+05 0.914000E+05 0.000000E+00
500 0.025000-0.589812E-08-0.589812E-08 0.000000E+00
600 0.030000-0.914000E+05-0.914000E+05 0.000000E+00
700 0.035000 0.140861E-07 0.140861E-07 0.000000E+00
***** SWITCH"DY "TO"MX " OPENAFTER0.400000E-01 SEC.
800 0.040000 0.914000E+05 0.914000E+05 0.000000E+00
900 0.045000-0.223552E-07 0.914000E+05 0.000000E+00
1000 0.050000-0.914000E+05 0.914000E+05 0.000000E+00
***** SWITCH"MX "TO"R1 "CLOSED AFTER0.600000E-01 SEC.
2000 0.100000 0.914000E+05 0.308276E+05 0.816876E+03
3000 0.150000-0.914000E+05-0.740984E+05 0.249386E+03
4000 0.200000 0.914000E+05-0.266698E+05-0.697043E+03
5000 0.250000-0.914000E+05 0.632108E+05-0.216176E+03
6000 0.300000 0.914000E+05 0.230688E+05 0.594775E+03
7000 0.350000-0.914000E+05-0.539215E+05 0.187348E+03
8000 0.400000 0.914000E+05-0.199508E+05-0.507498E+03
9000 0.450000-0.914000E+05 0.459962E+05-0.162329E+03
10000 0.500000 0.914000E+05 0.172514E+05 0.433018E+03
11000 0.550000-0.914000E+05-0.392347E+05 0.140622E+03
12000 0.600000 0.914000E+05-0.149149E+05-0.369459E+03
13000 0.650000-0.914000E+05 0.334663E+05-0.121793E+03
14000 0.700000 0.914000E+05 0.128929E+05 0.315222E+03
15000 0.750000-0.914000E+05-0.285453E+05 0.105465E+03
16000 0.800000 0.914000E+05-0.111433E+05-0.268939E+03
MAXIMA AND MINIMA WHICH OCCURRED DURING THE SIMULATION FOLLOW. THE ORDER AND COLUMN POSITIONING ARE THE
SAME AS FOR THE REGULAR PRINTED OUTPUT VS. TIME.
VARIABLE MAXIMA :
0.914000E+05 0.914000E+05 0.847194E+03
TIMES OF MAXIMA :
0.000000E+00 0.400500E-01 0.108500E+00
VARIABLE MINIMA :
-0.914000E+05-0.914000E+05-0.723871E+03
TIMES OF MINIMA :
0.100000E-01 0.100000E-01 0.208650E+00
** PLOT CARD. 0.100E+020.000E+000.200E+031 14410. 200. DY MX
** PLOT CARD. 0.100E+010.000E+000.800E+031 14401.000.800. DY MX
** PLOT CARD. 0.100E+010.000E+000.400E+031 14401.000.400. DY MX
** PLOT CARD. 0.100E+010.000E+000.200E+031 14401.000.200. DY MX
** PLOT CARD. 0.100E+010.000E+000.800E+031 19401.000.800. MX R1
** PLOT CARD. 0.100E+010.000E+000.400E+031 19401.000.400. MX R1
** PLOT CARD. 0.100E+010.000E+000.200E+031 19401.000.200. MX R1
BLANK CARD TERMINATING PLOT SPEC. CARDS. 1
CORE STORAGE FIGURES FOR PRECEDING DATA CASE NOW COMPLETED.---------------------------------------PRESENT PROGRAM
A VALUE OF-9999 INDICATES DEFAULT, WITH NO FIGURE AVAILABLE. FIGURE LIMIT (NAME)
SIZE LIST 1. NUMBER OF NETWORK NODES. 5 2002 (LBUS)
SIZE LIST 2. NUMBER OF NETWORK BRANCHES. 3 4500 (LBRNCH)
SIZE LIST 3. NUMBER OF DATA VALUES IN R, L, C TABLES. 3 4500 (LDATA)
SIZE LIST 4. NUMBER OF ENTRIES IN SOURCE TABLE. 1 1500 (LEXCT)
SIZE LIST 5. STORAGE FOR (Y) AND TRIANGULARIZED (Y). NO. TIMES = 1 FACTORS = 3 9 90000 (LYMAT)
SIZE LIST 6. NUMBER OF ENTRIES IN SWITCH TABLE. NO. FLOPS = -9999 2 800 (LSWTCH)
SIZE LIST 7. NUMBER OF TOTAL DISTINCT ALPHANUMERIC (A6) PROGRAM NAMES 2 2500 (LSIZE7)
SIZE LIST 8. NUMBER OF PAST HISTORY POINTS FOR DISTRIBUTED LINES. -9999 90000 (LPAST)
SIZE LIST 9. NUMBER OF NONLINEAR ELEMENTS. 0 250 (LNONL)
SIZE LIST 10.NUMBER OF POINTS DEFINING NONLINEAR CHARACTERISTICS. 0 800 (LCHAR)
SIZE LIST 11.NUMBER OF BRANCH OR SELECTIVE-NODE-VOLTAGE OUTPUTS. 2 1500 (LSMOUT)
SIZE LIST 12.NUMBER OF OUTPUT QUANTITIES (LIMITED ONLY WHEN PRINTING MAX ABSOLUTE VALUES). 3 1500 (LSIZ12)
SIZE LIST 16.TOTAL NUMBER OF TYPE-59 S.M. MASSES. 0 300 (LIMASS)
SIZE LIST 17.NUMBER OF DYNAMIC SYNCHRONOUS MACHINES. 0 9 (LSYN)
SIZE LIST 18.NUMBER OF BRANCH POWER-AND-ENERGY OUTPUTS. 0 50 (MAXPE)
SIZE LIST 19.FLOATING-POINT WORKING SPACE FOR ALL TACS ARRAYS. 137 10000 (LTACST)
SIZE LIST 20.RECURSIVE CONVOLUTION PARAMETER STORAGE FOR NON-COPIED BRANCH COMPONENTS. 0 10000 (LFSEM)
SIZE LIST 21.TOTAL STORAGE CELLS FOR MODAL-PHASE TRANSFORMATION MATRICES. 0 3000 (LFD)
SIZE LIST 22.NUMBER OF CELLS FOR CONVOLUTION HISTORY. -9999 5400 (LHIST)
SIZE LIST 23.GIANT ARRAYS FOR RENUMBERING AND STEADY-STATE SOLUTION CALCULATIONS. 4 90000 (LSIZ23)
SIZE LIST 24.NUMBER OF PHASES OF COMPENSATION, BASED ON MAXIMUM NODES. 0 9 (NCOMP)
SIZE LIST 25.FLOATING-POINT WORKING SPACE FORU.M.ARRAYS. -9999 1800 (LSPCUM)
SIZE LIST 26.SQUARE OF MAXIMUM NUMBER OF COUPLED PHASES. -9999 5000 (LSIZ26)
ELECTROMAGNETIC TRANSIENTS PROGRAM (EMTP386) TIME =08/20/0913.58.37 PLOT FILE = PLOT.PL4
ASSOCIATED USER DOCUMENTATION IS THE 864-PAGE EMTP RULE BOOK DATEDJUNE, 1984. VERSION M40. VARDIM TIME/DATE =1637223 960610
INDEPENDENT LIST LIMITS FOLLOW. TOTAL LENGTH OF /LABEL/ EQUALS1637223INTEGER WORDS. 2002450045001500 90000
8002500 90000 250 80015001500 300 9 50 10000 1000030005400 90000 918005000 300
--------------------------------------------------+--------------------------------------------------------------------------------
DESCRIPTIVE INTERPRETATION OF NEW-CASE INPUT DATA 1 INPUT DATA CARD IMAGES PRINTED BELOW, ALL 80 COLUMNS, CHARACTER BY CHARACTER.
0 1 2 3 4 5 6 7 8
0 0 0 0 0 0 0 0 0
--------------------------------------------------+--------------------------------------------------------------------------------
MARKER CARD PRECEDING NEW DATA CASE. 1BEGIN NEW DATA CASE
BLANK TERMINATION-OF-RUN CARD. 1 舒老师，我的email您已经收到了吧，里面有三张图，不知道你看到没，另外那个计算公式在内容中。电流确实很大，达到KA级别了，我想我上午做的这个仿真应该是符合并联谐振的特点的。我不知道你收到这三张图没，这里就看到您贴出来最后一张图片了。时控的时间我选的是-1s close 0.04sopen 这是第一个 第二个是0.6sclose 1s open。 舒老师的精神确实让人感动。 确实。老师认真的态度值得晚辈们学习 本网站有3天不能进入，是不是受到“HK”攻击？
本人，在纯MS-DOS做的PLOT.PL4不能在TOP软件打开，“大蚂蚁”告诉我格式不一样，他建议我“使用C:\ATP\Tools\PlotXY\PlotXY.exe”，我试验了，不成功，我估计是纯MOS-DOS下pl4文件的格式不符合ATPDraw的要求。我导入继电保护版主的二张曲线图PL4文档，能够打开、看见曲线图。我现在准备，在破电脑（WINDOWS95;--纯MOS-DOS7.01）去网上下载抓取纯dos画面工具，安装到破电脑里，抓取纯dos下PLOT.PL4的曲线，再上传给大家讨论。 很高兴的告诉大家：在各位版主、同仁的帮助下，我总于成功了，这是我学习ATPDraw入门的第一步。
是什么地方错误引起的呢？一是绘制仿真图；二是各个元件的填卡，当然包括如马老师能够“实型混杂数据卡”在ATPDraw中，当运行界面时，按F3的一些填卡。我错在Xopt没有填50；关键的图中接地符号不是用线连接错，就是缺少接地点。
虽然是成功了，这“只是万里长征第一步”，我远远没有看懂每一张卡片中许多内容的含意是什么？
因为，我还没有学会如何把我做的仿真图、曲线图拷贝下来、上传。没法与大家共享。
