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How many users of Octave and Scilab are there?

I see that Matlab/Simulink is very popular at universities. How many of you are using Octave or Scilab open source produ...
8 comments posted 17yrs
posted by qfufsxbz
8 comments posted 17yrs posted by qfufsxbz

LTV observable?

If LTV system$B!'(B d(x)/dt=A(t)*x y=C(t)*x is observable$B!$(B then LTV system: d(x)/dt= - A(t)*x y=C(t)*x must be...
0 comments posted 17yrs
posted by YeDong.Ye
0 comments posted 17yrs posted by YeDong.Ye

Compact PLC - CodeSyS

Hello, I'm looking for a compact PLC with approx. 12 Inputs (4 analogs) and 6 outputs (relays) programmed with CodeSyS....
1 comments posted 18yrs
posted by karolzak
1 comments posted 18yrs posted by karolzak

Controlling a Monte Carlo Simulation Kalman Filter

I've made a simple matlab program: a Monte Carlo simulation for Kalman filtering a moving, 1-dimensional position. The...
6 comments posted 18yrs
posted by jmathgeek
6 comments posted 18yrs posted by jmathgeek

Determining Stability from looking at bode plots

Given a Bode plot of the open loop system, I can figure out its gain and phase margins. However, I'm not sure how those...
9 comments posted 18yrs
posted by stanigator
9 comments posted 18yrs posted by stanigator

Root-Locus Plotting

For a system with Gc(s) = K(s+4)/s and G(s) = (s^2+2*s+2)^-1, I have the following question: 1. Why does this system no...
10 comments posted 18yrs
posted by stanigator
10 comments posted 18yrs posted by stanigator

Damping ratio comparison

For a system with G(s) = (s^2 + 2*s + 2)^-1 and Gc(s) = K, for the damping ratio, I have calculated the one for the ope...
1 comments posted 18yrs
posted by stanigator
1 comments posted 18yrs posted by stanigator

Kalman filtering with multiplicative noise

I'm trying to implement a Kalman filter in MATLAB that will use two types of measurements: volume and in/out flow rate....
15 comments posted 18yrs
posted by dsp
15 comments posted 18yrs posted by dsp

bode plot troubles

I'm trying to plot the transfer function 10/(s*(s+5)*(s+10)) by hand. I know that the poles all decrease at 20 db/dec,...
4 comments posted 18yrs
posted by stanigator
4 comments posted 18yrs posted by stanigator

fixed step solver vs. system time constant

All, I'm trying to implement a PID control scheme for a plant that has an extremely slow time constant (1.25 seconds)....
10 comments posted 18yrs
posted by weg22
10 comments posted 18yrs posted by weg22

Modeling a dynamic system

What is an "Assumed Modes Model'?How is an 'Assumed Modes Model' formulated? Can any one explain? Any links to the topic...
1 comments posted 18yrs
posted by snovite2002
1 comments posted 18yrs posted by snovite2002

How to form a real-time small scale network?

There are two manipulators fixed on a static frame, one manipulator installed on a mobile vehicle in our lab. Our plan...
13 comments posted 18yrs
posted by liuauto
13 comments posted 18yrs posted by liuauto

finding phase margin on Bode and Nyquist plots

For a nyquist plot, if that particular plot never crosses the unit circle, what would that imply about the phase margin?...
1 comments posted 18yrs
posted by stanigator
1 comments posted 18yrs posted by stanigator