Time waits nobody,tomorrow is May 1st international worker's day,which is a gold week in china.We got total a week's rest.Most of my friends left for tour,some went home,but for me,I felt so disappointed in this May 1st eve.About two weeks ago,I decide to using ADRC in my UPFC system,just hope this would get my paper come out.So the first step I tried to apply ADRC in 3-phase boost-type PWM rectifier.After spending a whole day to recover my ADRC knowledge,I did get the two PI current controller replaced by two one-order ADRC,it does work but not so nice.Today,I tried to replace the outer voltage loop with ADRC,but I find it's hard to get ESO model.From the voltage equation,it has a really bizarre form,which I had never notice before.Because if we using PI,the real first step is to get the non-linear equations set linearized.No other effective methods I know but to create the small signal model.If we get the approximated linearized model,we could write out the system transfer function,once this step is done,half design work finished.But for ADRC,should I still using the small signal model?I do not know.ADRC is nonlinear controller,most cases I saw before is to use ADRC to get the state-equation set controlled directly,no linearization process.My dilemma is:it is impossible to get outer voltage loop ESO equation unless get the equation linearized first.Why should I use ADRC if I get the equation linearized?Big joke...

I am not going to complain about this disappointing holiday,I am destined to have to work in this 7-day holiday.The most I should complain is that I wasted nearly a week to get involved writing the 863 application for our boss.I am really tired of these fucking things since last time that helping to make the PPT of National Defence Foundation Suggestion Application.

Our "boss",Mrs Su,was promoted to Ph.D supervisor days before.We can tell obvious happiness on her face these days.But we are suffering these days from making a ppt used for a military project application.

Last Friday,our boss called us together for a temporary meeting.She announced us the news that our suggestion notes had got the first-step acceptance by specialists of National Defence & Science Engineering commission.April 19(the day this post posted),there would be a debate conference held in Beijing to discuss the feasibility of our suggestions.If we made it,we would get sponsored by NDSEC with 3000,000 yuan used for research.Three million is a big number of course,but the situation is that this is different from project competition,we suggest those officers of NDSEC what should be done,if they accept our suggestion finally,we got the money to do the base research.It is more about theoretical research than engineering realization. Surely ,it greatly intrigues our "female boss" who prefers theoretical research than engineering ...

The task was that we need to search the web and find the relevant information,then made a beautiful PPT.Because we are lack of military program application experience,and we know less about military background,this made us don't know what to start.The purpose of this program is to equip our combat vehicles with Matrix Converter.Our aim is clear:show how poor performance and disadvantage of AC-DC-AC converter is and how perfect property and advantage by using Matrix Converter in Combat vehicles.Actually,from googling,we know all of the equipped land combat vehicles such as tanks and armored combat vehicles,even the most advanced M1A1 tank are using diesel engine to provide propulsion and automotive.Most research dedicating all electrical combat vehicle are focused on AC-DC-AC converter except American army research laboratory(ARL).ARL are trying to using Matrix Converter in tanks,and they had made a 150kw Matrix Converter prototype.

After got enough information we got,making PPT is a energy consuming work.My task is mainly on plot picture and PPT animation. Four days of hard working,we finally got a version our boss satisfied.And now,I guess our boss is in the debate process now.God bless her...

This morning,I arrived my lab early.When I signed in my QQ,actually I had not signed in for a long time,and not long before I got a pop-up news snippet said that "American campus shooting causing 33 dead".This news of course is a big bang!So I launched my Web-browser to check this news out as soon as I can.Not surprisingly, this news hits the headlines of news site I know such as sohu,sina and CNN.From news report in CNN,Gunman massacres 33 at two Virginia Tech sites,Some students jumped from windows to escape,some Other students locked themselves in teacher's office.It is the deadliest shooting rampage in U.S. history.

Appendix:
Rs=0.5,Ls=1e-3H
C=1e-3F,Rload=50ohm
Vdc_ref=500V
Vdc:Kp=0.1,ki=1.5(Vdc control loop)
Id:kp=0.1,ki=0.3125(Id control loop)
Iq:kp=0.1,ki=0.3125(Iq control loop,Iq_ref=0 under unity power factor)

She got her final offer by Renmin university of China.I know this news from her MSN space.I am so happy for her hardness coming out a good result.

I knew this girl about an year ago.I met her on putclub,a English learning forum.At that time,I was tortured by my poor listening and oral English.I noticed her reply,and I checked her profile.She left her contacts,so I added her to my QQ buddy.We didn't talk too much because she did not often show on line.But one day,she left me a message to let me fix up her computer problems.And after this,we talked a little more and I added her to my MSN buddy list.I knew her more and more,she was born in the same year with me.She was a bank official.And she said she wanted to get postgraduate education.She had a boyfriend in her college life.And now,according to her words,she is dating with a British born Chinese guy.This really made me hurted when I hearted this news.All of her posts are full of happiness and love.Truly speaking,I envied that damned British guy so much then.Oh my god,was I starting to fall love with her?I did not know then.What kept in my mind clearly is that every time when I signed in MSN,I hoped she was online.And the weird thought was that I hoped her computer was down again.I remembered one Saturday night of last year,I wanted to give her a call,but I did not finally.I felt so good about her then.But I did not have enough courage yet.

From her MSN space,I know much about her life.A fashion-following girl and seems had many love stories.And some time when I said "Hello" to her on MSN,she made no reply.This kind of rudeness made me outrageous. In her mind,maybe I was just a anti-virus tool.As a whole,she is not my type .

I wasted so much time chatting with her,sending her SMS for encouraging her study.Sometimes when I look back the way I walked through,I may think how silly was I then. Forget about all of this,I do not want to say no more about her.Wish her a good journey to Renmin university.

For me,it is a non-study Saturday today.Actually,I woke up early this morning,so head up to my laboratory just want to debug my MCU program.As I posted before,I had built up a soft MCU simulation environment based on Proteus and keil.And yesterday night I got a music-play program from Internet,but it did work on my platform.A whole night wasted for debugging without results contented me.So this morning I decided to make a more detailed check.Not long than an hour had I been my lab,my roommate Gao,who rushed into my lab and asked me out said a classmate's visit.I followed him,and was guessing who this guy might be.It is Tan,our college classmate,who is now a military officer working in Zhuzhou city.He did visit us often,last time's visit is about 20 days ago.This time ,according his words,he got a nearly a month's holiday.For Tan,there are six classmates still stay in csu for master of science degree including me.After half an hour's chitchatting,I suggested him visit our laboratory and surf web for consuming time,but he refused.He said it was OK for him to walk around in the campus and asked me back to my work.He would call me at the lunch time.So I was back to my position,resume debugging my program.Through a step run debug,I found that there is a array that can not be assigned.That was weird.Finally I got the answer that the array was defined in external data space,but the simulation model I built up in ISIS did not extend the accord external memory space.This of course would take no effect of assignment.After I redefined this data array to internal memory space,the program worked perfectly.It was so happy for me to listen the sound came out rightly from my headphone.And time was nearly ten to twelve then.I consumed my left time on chinadaily for waiting his call.It was a not long waiting.We got to a restaurant for a reunite lunch.Free lunch for me.^_^.After the meal,eight of us,including Yin,headed up to our dormitory.I washed my clothes when they were chatting.A whole afternoon's chatting.I am so sleepy now because of no noon-nap today.At this my posting time,it seems hard for me to concentrate on my work.

However,this is a precious chance to be together for us.Maybe it will not be so easy for us to get together when all of us get worked.Anyway,thanks his meal and thanks his visit.

I built up my proteus environment yesterday.Story began yesterday afternoon when I heard by accident that there is a software named Proteus that can simulate C51 MCU.I was so exitted then because I have no MCU development kit,it would be a good idea to work on this soft platform.I searched Google,Out of my surprise,it even can work in conjunction with keil environment!It means I can debug my C51 programs,for keil,proteus works like a real board.What's more,it also support ARM processor.Can not wait any longer,I downloaded a crack version of proteus6.9 SP4 and keil,after installation,I thought there would be no problems,but I was wrong.When I load a sampler c51 calculator project in ISIS professional,at the same time I use keil to debug the sampler source code written in C,it showed my a error message said "Error target dll cancelled..."again and again.No measures could I take but turn my head to Google.From a Chinese proteus forum,I need another crack file-a crack prospice.dll file.I got this file from this forum site and replaced the same file located in the proteus installation directory Bin folder,finally keil worked with proteus perfect.I can debug my code,I can start the system on proteus.Actually,things were not that easy to be done like a described above.I spend whole my night to search the web,download crack files.After several failures,I made it!When the two systems works,it was nearly half past 23,I was left alone in the big laboratory.I turned off my computer,cut off lab's main power supply,locked the door,and run toward my dormitory...

Today is a cloudy Sunday,also the April fool's day.I should leave something memorable here.But today is quite a normal day.Nothing interesting happened to me.No fool,no funny.I spend all my day in PLC laboratory.The damned hot weather is back to normal finally,it is windy outside all day.

Our mentor,Mrs Su was back from her business journey yesterday,but did not show up in our lab yet.Stress from publishing papers make me have to read papers day after day.Though I know the principle of PWM rectifier and get the right simulation results at the present,there waiting lots of difficulties for me.Next step I am going to focus on static var generator(SVG),which has the same topology with three-phase PWM rectifier but with different control aim.SVG mainly takes active and reactive power as control variables.

Damned campus network was down this afternoon.I can not post it immediately on blogspot.

This post should be posted yesterday but because of the bad network.I really hope blogspot has the function of changing post timestamp,like wordpress does.

Today,there is a real funny thing.I was the last but one that left our room this morning.When I got out,I even do not realize that I locked the door with my key.I think I was thinking something then,but I can not remember now.When I arrived my lab not for long,I received a SMS sent by my roommate Xialixun.It says "You locked the door when you left,I can not un-lock it from inside!".I was shocked then.I even do not remeber I did that.I am sure I did know that Xialixun was still on his bed,but why I locked the door?No more to say,I replied "Oh god,I will be back soon".So I left my lab and run toward my dorm.It is about 15 minutes' journey.When I got to my room,we both laughed loud.It is a post April fool's day maybe.

Why am I looked so stupid today?