Ken

Last seen: Today | Con actividad desde 2012

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To find closed loop matrix from open loop for system with linearied feedback
If I have a matrix [Adot Bdot]' =[-2 1;-3 1]*[A B]' +[.3 5]*[A B]', how do I find the closed loop matrix? (Sorry if this is too ...

1 día hace | 0 respuestas | 0

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How to determine if equation is not feedback linearizable
Is there a MATLAB function that can determine if feedback is linearizabe or not from the state equations? eg Is this system line...

3 días hace | 1 respuesta | 0

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Why do I get conj(L)
When I multiply 2 4X4 matrices one numeric the other alpha numeric say with L1,L2,L3, L4 why do I get the answer with cconj(L1,L...

12 días hace | 2 respuestas | 0

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Diferent answers to same cmd
As mentioned earlier, I am trying to get familiar with MATLAB in aircraft controls. Focus now is Matlab. I saw a presentation wi...

21 días hace | 0

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Diferent answers to same cmd
A=[-.01 .1 0 32.2;-0.4 -.8 180 0;0 -.003 -.5 0;0 0 1 0] B=[0 -10 -2.8 0]' P=ctrb(A,B) P=poly(P)

21 días hace | 0

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Diferent answers to same cmd
I am trying to figure out Matlab. Tried the cmd shown in the attachment, get different response(see attachment)

21 días hace | 2 respuestas | 0

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How to compute the characteristic equation given the eigenvalues?
Is there a matlab command to get the characteristic equation (CE) given the eigenvalues? Similarly how to get CE from the A matr...

22 días hace | 1 respuesta | 0

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Use of functions ctrb and poly
I have 2 matrices A, B. I use ctrb(A,B) to get matrix P and then try to use poly(P) to get the polynomial of P but get error msg...

23 días hace | 1 respuesta | 0

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How to get damping ratio and nat freq from eigen values using matlab cmd
I have a 4X4 matrix, and have 4 desired eigenvectors.How to get the natural freq and damping ratio with these eigenvectors

24 días hace | 0 respuestas | 0

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how to write partial derivatives in MATLAB
I am trying to form a 2X2 matrix using partial derivatives i.e. [delf1/delx1, delf1/delx2; delf2/delx1, delf2/delx2]. Not sure h...

casi 3 años hace | 1 respuesta | 0

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How to avoid error in anonymous function
Tried as suggested, error Undefined function 'Fx' for input arguments of type 'double'.: f = @(x, u) Fx(x,u)*x(t-1) + Fu(x,u)*u...

casi 3 años hace | 0

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How to avoid error in anonymous function
I am trying to predict the robot position using the 3 steps below but get error: Fx = @(x,u) jacobian(f(x,u),x); Fu = @(x,u) j...

casi 3 años hace | 2 respuestas | 0

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How many multiplications in one convolution
C = [1;2;3]; % i.e. a column vector, hence named "C" R = [1 2 3]; % i.e. a row vector, "R" F = [1 4 6 4 1; 4 16 24 16 4; 6 24 ...

casi 3 años hace | 1 respuesta | 0

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Edge detection using Convolution
I am trying to detect the edges in an image using convolution. Tried this but get error " final_lena does not look like it has t...

casi 3 años hace | 2 respuestas | 0

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How to find out what this code does
This code pertains to image processing - line parameters Hough transform. Not sure what the third line does. f=zeros(128,128); ...

casi 3 años hace | 0 respuestas | 0

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Sum of squared differences SSD
How to use SSD to compare datapoints in 2 separate data sets i.e. to compare pixels in 2 images? Is this the best function to u...

casi 3 años hace | 0 respuestas | 0

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Vision Problem using symbolic MATLAB toolbox
I am trying to solve a vision problem in robotis deals with epipolar transforms using symbolic tool box of MATLAB. Tried this bu...

casi 3 años hace | 0 respuestas | 0

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Anonymous Functions - how to store the results of anonymous functions
rng(1) % important for technical reasons U = [ 1 -1 3 4 ]; % an artificial input sequence % applyPredictionUpdate returns the ...

casi 3 años hace | 2 respuestas | 0

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Anonymous function arguments and parameters extrction
If I have the anonymous function: pu = @(x, y) [x,y]; is it npossible to extract the value of the argument x after the functio...

casi 3 años hace | 2 respuestas | 0

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Anonymous functions usage when running the following program to apply and then plot a prediction, sensor reading and measurement update Invalid expression.
Thanks, tried but error: "Unrecognized function or variable 'sensorReading'. Error in solution (line 14) applyMeasurement...

casi 3 años hace | 0

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Anonymous functions usage when running the following program to apply and then plot a prediction, sensor reading and measurement update Invalid expression.
I get error on the foll. program "Invalid expression. When calling a function or indexing a variable, use parentheses. Other...

casi 3 años hace | 2 respuestas | 0

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How to get a loop to converge
I am trying to get a loop to converge in Inverse Kinematics. I use this line: dq=pinv(J_BF_inB(q*b)); where J_BF_inB is a 3X3 ...

casi 3 años hace | 1 respuesta | 0

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How to access parameters from an anonymous function from another function
I have the anonym function getPLocalTransition. It has x as one of its parameters. I have another function dir; I try to call ...

casi 3 años hace | 0 respuestas | 0

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unable to run pinv (Moore Penrose) with accuracy limit
Still not able to get this to converge. Problem is not sure whether to state a tolerance limit i.e. the foot should be in the go...

alrededor de 3 años hace | 0

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How to use anonymous functions
I am trying to understand anonymous functions. What exactly does this do: pTransition = [ 0 0 0 0 0 0 .05 ...

alrededor de 3 años hace | 1 respuesta | 0

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unable to run pinv (Moore Penrose) with accuracy limit
I think the NRaphson is overkill for this, so will go with your code posted at 5PM yesterday: b = (rGoal-r0 ); tolerance = 1e-...

alrededor de 3 años hace | 0

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unable to run pinv (Moore Penrose) with accuracy limit
I am trying to use pinv to allow a robot system to converge.I tried but get errors. This is my script stateent : dq=double(pinv...

alrededor de 3 años hace | 5 respuestas | 0

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Unable to run pinv (Moore Penrose) , get errors
Tried the following script: r0=[0,0,0]; dq=double(pinv(J_BF_inB)*(rGoal-r0)); dq=double(subs(dq,[alpha,beta,gamma],[0,0.52,1....

alrededor de 3 años hace | 1 respuesta | 0

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incorrect or unexpected brackets
[newx, newy] = ind2sub([nrow, ncol], candidates(whichleast)); next = [next;(end,:)+{newx, newy}]; get error unexpected b...

alrededor de 8 años hace | 2 respuestas | 0

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umnsin of expressions - x and y are the rows and cols
I am trying to evaluate this, but I want the answer in an expression in x and y since x and y are the rows and cols of a matrix...

alrededor de 8 años hace | 0 respuestas | 0

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