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I want to find the root locus of polynomial.
Running the code m_s = 5; % Mass of the spring m_r = 68; % Mass of the rotor k_r = 5.45e5; % Spring constant of the roto...

約2年前 | 0

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how to express operators in symbolic algebra
I'm not sure how define a function of a function. But this seems to work, at least for this simple case: syms x t syms q(t) v(...

約2年前 | 0

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How can I fix this problem?
The variable x is defined at the top of the code to have 4 rows. In the loop that calls fsolve, x0 is defined with four elements...

約2年前 | 0

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Fourier Series for odd integers only
Hi Tashanda, I see a couple of issues with the code Though not an error, it would be clearer if you specified the variable of ...

約2年前 | 0

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How can I extract the x and y values of the phase- and magnitude graph of a .fig file plotted with bodeplot() or bode()?
sys = tf(1,[1 1]); bode(sys); hf = gcf; hax = hf.Children hax(2).Children % the first child is the phase plot hax(2).Child...

約2年前 | 0

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Error using fft Invalid data type.
Hi Koray, It looks like you have a signal f(t) that is defined over the interval 0 <= t <= 1.5 as: syms t; K = 20; %35; Chan...

約2年前 | 0

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I want to get the value of x using the Matlab code "Out = fzero(@(x) (A-sqrt(2*pi*H*E*x*((x/E)+(x/F)^1/G))), 1000000)", but not getting the correct answer. Could you help me?
Seems to work here just fine. Why do you think you're not getting the correct answer? A = 20627000; E = 210000000000; F = 122...

約2年前 | 0

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D/A converter delay transfer function
That doesn't look like the typical D/A converter ..... But, assuming T is negative you can simulate the delay of -T/2 with a Tr...

約2年前 | 0

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Cannot plot negative frequencies on Nichols with recent MATLAB versions
Hi lepolonais03. Test case shows that only positive frequencies are considered, as you've obeserved. sys = zpk(1,[2 3],4); w=...

約2年前 | 0

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how to create a look up table to use in simulink from a 2D array of doubles
Assuming your 40x2 array is stored in a workspace varaiable named data. Use the 1D Lookup Table. Set the Table Data parameter ...

約2年前 | 0

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I want to know Block Diagram for "rlocus(G)" and how they calculate the overshoot of the graph.
(1) Yes, rlocus(G) fits the architecture you have. If "I can see overshoot" means that you're clicking on a branch on the root ...

約2年前 | 0

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pzmap and bode do not return zeros for all specified outputs
Hi Marcel, There isn't really a problem. If you want to get the pzmap of each individual transfer function of MIMO system, then...

約2年前 | 0

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why my discretized PID controller behaves differently than my continuous (unfiltered) PID?
Hi Israel, Let's take a look at the problem analytically. Define the plant and controller s = tf('s'); P = tf(1/(s^2 + s)); ...

約2年前 | 0

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Is there anyway to increase the calculation speed of this sqrt integral2 without loosing accuracy?
The iterated method works much faster as compared to auto (which I assume goes to tiled). Unclear why iterated integral2 is slow...

約2年前 | 0

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How does isstable(sys) and step response plot in all toolsbox on MATLAB work?
In the Control System Toolbox, isstable returns a logical value of 1 (true) for stability of a dynamic system if: In continuo...

2年以上前 | 0

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Simulink integrator block reset and integrate at single time step
Hi Jaewon, If I understand correctly, the short answer is no. The whole purpose of using the iuntegrator reset to is step the ...

2年以上前 | 0

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The signal generated by the chirp function has amplitude values that are not 1 in some parts of its time-domain diagram
The sampling frequency in t2 isn't high enough to catch (or get close to) all of the peaks at the higer frequencies. Here's the ...

2年以上前 | 0

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constructing discrete time system
Hi Junhwi, The short answer is that the sample time, st, is too large for discretizing Cdr before forming the closed-loop syste...

2年以上前 | 1

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Trying to enter a transfer function in simulink (tauD s + 1)
Hi Wouter, As you've found, that transfer function can't be implemented in Simulink in a Transfer Fcn block. Depending on the ...

2年以上前 | 0

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simulink tout sample time and to workspace block
By default, the tout variable is updated at every major time step of the solver. The defaults, including the variable name and w...

2年以上前 | 0

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Matlab Solve and simplify functions not working
Hi Brittany, Run the code: foot_forces f21_sol One option is to use vpa to convert to a VPA number. However, the result is s...

2年以上前 | 1

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質問

simplify() with dirac and All = true Doesn't Work?
Why does the second call to simpify cause an error? Is that a bug? syms x real simplify(dirac(x)) % works simplify(dirac(x),...

2年以上前 | 1 件の回答 | 0

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How do I express my numerator in the transfer function block (SIMULINK) if the s variable is in the exponent?
Hi Kaitlyn, What does 10*exp(-2.6*s) represent in the time domain. Or more simply, what does exp(-2.6*s) represent in the time ...

2年以上前 | 0

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How do you express the root locus for k in MATLAB
"How do you express the root locus for k" Assuming the question is how to plot the locus of the closed loop poles as k varies, ...

2年以上前 | 0

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Spike at the start of discrete integration.
In the first Discrete Derivative block that computes the rate, try setting the parameter "Initial condition for previous weighte...

2年以上前 | 1

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Issues Using Dirac Function Trying to add Impulse Force at specific time
Hi Michael, The ODE solvers aren't set up to handle Dirac impulse functions this way. As I read the code (make sure to double ...

2年以上前 | 0

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Errors using ode45, state representation with time variant parameter matrices
%System Parameters a = 4.5; M = 2.5e3; I = 3.2e2; k = 5e5; c = 3.6e3; v0 = 18; g = 9.81; rho = 8e2; EI = 7e8; L = 400; %Para...

2年以上前 | 0

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Obscure error in mvncdf()
Walking through the debugger for this code: %{ aaa1=[4.546541072119, -19.52465262]; aaa2=[4.548657475153, -17.361228432903]; ...

2年以上前 | 0

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Extracting data from SimulationOutput from multiple simulations
signalname = 'PCC_Vabc'; PCC_V_ALL = cell2mat(arrayfun(@(out) TP_rms(get(out.logsout,signalname).Values.Data),out,'UniformOutpu...

2年以上前 | 0

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Finding a definite integral
Hi Sharon, It seems like we want to compute the following integral syms x u(x) k(x) w(x) I = int((u(x)+k(x))*w(x),x,0,1,'Hold...

2年以上前 | 0