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Prof. Dr.-Ing. habil. W. Schwarz October 9, 2001
Department of Information and Computer Science Waseda University Problems to solve until Wednesday, October 17
Please provide the solutions on one single sheet. Thank you.
1. A car (mass m = 800kg) under the influence of a driving force F is considered as a system. The input is the force F, the output is the velocity v of the car.
a) Determine the input-output relation of the system, i.e. find a formula that connects v and F.
b) Is the system static or dynamic ?
c) Is the system linear ?
d) Calculate and plot the velocity v(t) versus time for the force-time function depicted.
2. A discrete-time system is given by the difference equation y(n+1) = ay(n) + x(n). Find a general expression for y(n) for an arbitrary input sequence x(n) and initial value y(0).
Hint: Start with y(0) and subsequently calculate y(1), y(2),... using the difference equation.
3. A contiunuous-time system is described by the ODE
dy/dt=ay(t)+x(t).
Find y(t) for an arbitrary x(t) and an initial condition x(0).
Prof. Dr.-Ing. habil. W. Schwarz October 9, 2001
Department of Information and Computer Science Waseda University Problems to solve until Wednesday, October 24
Please provide the solutions on one single sheet. Thank you.
1. The picture shows a simplified car spring system. Input is the street level x, output the car body position y.
a) Determine the input-output relation of the system, i.e. find the ODE which connects y and x .
b) Calculate and plot the step an the impulse response of the system.
c) Formulate the general input-output relation.
2. A discrete-time system has the step response s(n) = n 1(n).
a) Find the impulse rsponse.
b) Determine the response y(n) to the signal Plot both x(n) and y(n).
次の関数のフーリエ級数展開を求め、図に描け(nを変えていくつか図示せよ)。
レポートはlatexで作成し,図も(できれば)本文中に張り込むこと。締め切り11/28。
11/28よりレポートが提出され始めました。現在,採点を開始していますが,図のファイルを同時に送ってもらわないと,図は表示されません( texの特徴。pdfでは図も取り込まれますが)。よって,図のファイルを同時に送ってくれていない人(かなりいます)は直ちに図のファイルを含めたものを(もとのファイルとともに)再提出してください。
最終更新 2002/2/16
©Oishi Shin'ichi
URI: http://www.oishi.info.waseda.ac.jp/~oishi/phy2/phy2.htm