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Relationship between system parameters and properties

十一月 21st, 2011 by 井 JING 元伟 Yuanwei

Today, we discussed the properties of systems. Please read the problem carefully and understand what is the meaning of the problem, i.e., what does the problem asked. You should give out both the result and the conclusion. Are you CLEAR?

Posted in Interactive Zone 教学互动 | 314 Comments »

七律 五五感赋

十一月 20th, 2011 by 井 JING 元伟 Yuanwei

半旬天命曲中直,

悟理寻真尚可知。

身教言传问桃李,

心达语致敬严慈。

读书行路习智慧,

历事阅人炼胆识。 

窃喜此生相伴进,

深情可寄有华实。

  一旬为十,半旬乃五年也。知天命时,是岁过五十载。五十五年,坎坷曲线有之,平铺直行更有之。一路走来,领悟人生道理,探寻处事真谛,还不算不开化之人。曾经、正在、将来继续,从事着天底下最崇高的事业,桃树李木,蔚然成林,有正发芽者,有已结果者,有叶儿青青者,有树冠郁郁者。虽己者不才,在科不有大成就,然在教仍可慰心。此身可来世上,全赖父母,此生可活于世,全仰仗爹娘,此世一点出息和成绩,全为慰籍严慈。胸怀大志者,云,读万卷书,行万里路。心存小技者,附,历万件事,阅万种人。以此长智慧,以此壮胆识。今生得一可举案愿齐眉者,是功成名就之保障,今生得一能后浪推前浪者,是阳光沙滩之基础。年过半百,便已然人称老汉,况五十有五乎。然当今之世,七十古来稀已不在话下。教训大半生,最痛为天真,天真虽误我,宁做天真人。且将书读破,还把路走平,管他好坏事,只做天真人。

Posted in 随笔 | 220 Comments »

About Problem 3, A Special Case

十一月 14th, 2011 by 井 JING 元伟 Yuanwei

We considered the solution to the system described in Problem 1 with m=1, k=2, h=3, and u(t)=2, and special initial state. It’s not too difficult to get the solution, but the solution is not as we thought. Maybe, you can find some thing from it. To get the correct result is necessary, and to get the meaning is important. You are welcome to present your opinion HERE.

Posted in Interactive Zone 教学互动 | 215 Comments »

Quatitative Analysis of Systems

十一月 7th, 2011 by 井 JING 元伟 Yuanwei

We delt with the quantitative analysis of linear systems in this class. We use two methods to obtain the solution of the homogeneous system, one of which is the power series method, and the other is appreciation method. And we discussed the calculation of the matrix eponential of system matrix. I hope you are interested in them.

Posted in Interactive Zone 教学互动 | 321 Comments »