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Feeds
Did the Reinforcement Learning Designer get removed?
The Reinforcement Learning Designer App is a new feature in R2021a which is currently scheduled to be release soon. It looks li...
mer än 3 år ago | 1
| accepted
Plotting Points On A Nyquist Curve
This would allow you to plot points on the nyquist plot for different frequencies. sys = tf(1,[1,1,1]); nyquist(sys); ...
mer än 8 år ago | 0
| accepted
What does infinite phase margin mean of a transfer function and is this even practical in the real world?
A few ways to interpret an infinite phase margin is: * you can rotate your frequency response plot on the Nyquist diagram and...
mer än 9 år ago | 1
| accepted
Transfer function nyquist diagram problem
If I understand what you mean by scale/wrap. The first system has finite magnitude for all values of jw. The second system has...
ungefär 10 år ago | 0
Is there a way to retain data in root locus and bode plots when saving?
Currently there is not a way to retain this information when saving the root locus or bode plot. There is an open enhancement r...
mer än 10 år ago | 0
Is there a way to save gain/damping/overshoot data from a root locus plot.
Currently this can not currently be done. I have created an ehancement request to consider this. You could however compute the...
mer än 10 år ago | 0
| accepted
Create bode plot from state space in dB units?
The issue is setting the MagScale to log and using dB for units. Any magnitude less than one will be negative in dB and thus ca...
mer än 10 år ago | 0
| accepted
Ho to plot inverse Nichols grid lines?
Looking at the code in function "nicchart" may help you. Note: "nichchart" is an undocumented helper function that generates the...
mer än 10 år ago | 0
How to multi-color different models in model array responses?
One option is to plot them using a loop such as: figure hold on Color = {'b','r','g','k'}; sys = rss(2,1,1,4); ...
mer än 10 år ago | 0
How can I get closed loop bode on LTI Viewer, while using SISO design tool?
Hi Karthik, You can add the analysis plots by going to the "Analysis Plots" tab in the "Controls and Estimation Tools Manager...
nästan 11 år ago | 0
ss2tf give different results depending on version of MATLAB
Over releases algorthims are updated to improve reliability and accuracy of computations. As a result answers can differ betwee...
ungefär 11 år ago | 0
Is it possible to automatically add all margins to a bode plot via script?
Currently there is not a documented API to provide this functionality. The MARGIN command may help you to workaround this issue....
ungefär 11 år ago | 0
How can I change the DEFAULT line thickness on a control systems toolbox function (rlocus, bode, step, lsim, etc..)?
Currently there is no documented programmatic way of doing this. I have created an enhancement request for this functionality. ...
mer än 11 år ago | 0
generating bode plot in simulink
If you have the Simulink Control Design product you can use the "linearize" command to obtain a linear model. You can then use t...
ungefär 12 år ago | 0
| accepted
How to find the equivalent transfer function(poles and zeros) having the Body diagram ?
The System Identification Toolbox has functions that estimate a transfer function from freqeuncy response data. For example the ...
mer än 12 år ago | 0
vector to sys transformation for bode plot
What is the dimension of the final system are you trying to get? For example, sys = tf(1,[1,1]); c = 1:10; 1...
mer än 12 år ago | 0
| accepted
How to do Control System Analysis (like Bode, ...) or get Transfer Function of Simulink Model?
The product Simulink Control Design has a command called linearize which computes a linear model (e.g. a transfer function) from...
mer än 12 år ago | 1
advanced frequency domain analysis of SISO models
If you have the Optimization Toolbox you might try the function FSOVLE which is used to solve equations of the form F(x) = 0. ...
mer än 12 år ago | 1
| accepted
margin bode plot lines wrong when 'TimeUnit' not seconds
This is a bug in the drawing of the margin lines when the units are not in seconds. I have created a bug report for it. Thank...
mer än 12 år ago | 0
| accepted
Line width
You can change the line width with the graphical interface using the plot edit mode. Select the line and right click and select ...
mer än 12 år ago | 0
State Space Models (Power System)
If I understand your question correctly Z1,Z2, Z3 are effectivly external inputs. This means you should be able to append them ...
mer än 12 år ago | 0
extracting values from bode()
Hi, The NY and NU sizes are based on the number IOs (inputs and outputs) your system has and would be fixed. You can compute ...
mer än 12 år ago | 2
| accepted
Complex Coefficient Filter bode plot
You could try this as a workaround a = tf(1,[1,i]) % Complex tf wp = logspace(-2,2,100); % Freq vector hpos = freqresp(a,...
nästan 13 år ago | 0
multiple bode plots on same graph
You can create an frd object from your data and then plot it like any other LTI object. [ResponseData,Frequencies]=freqresp...
nästan 13 år ago | 1
Bode diagram to Nichols curve
Hi Simon, You can create an FRD (frequency response data object) using the mag and phase information >> m = [1;2;3]; % m...
nästan 13 år ago | 0
StepInfo Outputting NaN for my Transfer Function
Hi Omar, The system you specified has an integrator and is therefore unstable. This is the reason why NaN's are being returne...
ungefär 13 år ago | 1
Unobtainable bode plot ?
You might want to try this (j*w_n)^2 = -w_n^2 then you can rewrite the w_n^2 term.
ungefär 13 år ago | 0
Margin gives wrong 0db point. (the second crossing of the 0db line not the first)
Hi Max, The MARGIN command computes the mimimum phase margin, which in the code example you provided does occur for the third...
ungefär 13 år ago | 0
SISO Design tool in discrete time
Hi Adeyemi, In the SISO Design Tool there is an check box option on the PID tuning panel for "Design with first order derivat...
mer än 13 år ago | 0
kalman function from Control System Toolbox™ missing Nu value
Hi Paulo, I ran the code you posted in MATLAB version R2008b and it ran to completion fine. The variable Nu is initialized on...
mer än 13 år ago | 1
| accepted
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