Answered

Find likelihood from state space with Kalman filter

Hi @Rob Perhaps you are looking for the likelihood() function. help likelihood

Find likelihood from state space with Kalman filter

Hi @Rob Perhaps you are looking for the likelihood() function. help likelihood

13 days ago | 0

| accepted

Answered

Driving force of driven damped harmonic oscillator missing

Hi @Jerry Yeung Basically, there is nothing wrong with your original code. The reason that the spring response is not affected ...

Driving force of driven damped harmonic oscillator missing

Hi @Jerry Yeung Basically, there is nothing wrong with your original code. The reason that the spring response is not affected ...

14 days ago | 0

Answered

I need cost function for tuning PID controller help me

Hi @Yazeed Ali Not sure what your system is, but I think you can try the one of the simplest cost function probably looks like ...

I need cost function for tuning PID controller help me

Hi @Yazeed Ali Not sure what your system is, but I think you can try the one of the simplest cost function probably looks like ...

15 days ago | 0

Answered

nonlinear variable state space observer pole placement

Hi @Bernd Pfeifer Long time I didn't solve math puzzles like this one. Generally, you should be able find the analytical soluti...

nonlinear variable state space observer pole placement

Hi @Bernd Pfeifer Long time I didn't solve math puzzles like this one. Generally, you should be able find the analytical soluti...

21 days ago | 2

Answered

finding the distance between two points

Hi @Natali Petani You can try the function: pdist2(). https://www.mathworks.com/help/stats/pdist2.html help pdist2

finding the distance between two points

Hi @Natali Petani You can try the function: pdist2(). https://www.mathworks.com/help/stats/pdist2.html help pdist2

26 days ago | 0

Answered

Input Signal from state space model

Hi @Justin You can try using the lsim() function. Search Google/Documentation for details. Example is shown below: A = [ 0 ...

Input Signal from state space model

Hi @Justin You can try using the lsim() function. Search Google/Documentation for details. Example is shown below: A = [ 0 ...

26 days ago | 0

Answered

My Simulink Model takes hours to complete 1 second, and I need to run it for 5,000 second. I tried to change the minimum time step, but Matlab keeps giving erros when I do so.

Hi @janna roberts The typical satellite attitude dynamics are not stiff. You can try, but I think changing it to a stiff solver...

My Simulink Model takes hours to complete 1 second, and I need to run it for 5,000 second. I tried to change the minimum time step, but Matlab keeps giving erros when I do so.

Hi @janna roberts The typical satellite attitude dynamics are not stiff. You can try, but I think changing it to a stiff solver...

26 days ago | 0

Answered

How to verify if my system (Z-domain) is stable in MATLAB

Hi @Rafael Most probably because you did a "positive feedback". Try do this impulse(feedback(K*TF, 1)) instead of impulse(f...

How to verify if my system (Z-domain) is stable in MATLAB

Hi @Rafael Most probably because you did a "positive feedback". Try do this impulse(feedback(K*TF, 1)) instead of impulse(f...

27 days ago | 0

Answered

How to make the linear function

Aha, I see... If you want to get rid of spikes and want a smooth transition, but not strictly linear, then you can consider addi...

How to make the linear function

Aha, I see... If you want to get rid of spikes and want a smooth transition, but not strictly linear, then you can consider addi...

27 days ago | 0

Answered

Creating custom Transfer Function with more learnable parameters

*Edit*: This article contains information about creating custom functions for NN. https://www.mathworks.com/help/deeplearnin...

Creating custom Transfer Function with more learnable parameters

*Edit*: This article contains information about creating custom functions for NN. https://www.mathworks.com/help/deeplearnin...

27 days ago | 0

Answered

What algorithm to use for collision avoidance of a robot?

Hi @Farzad Torabi I'm unsure. Maybe you intend to tell the robot to "back down" or retract the arm? Conventionally, RRT is an ...

What algorithm to use for collision avoidance of a robot?

Hi @Farzad Torabi I'm unsure. Maybe you intend to tell the robot to "back down" or retract the arm? Conventionally, RRT is an ...

29 days ago | 2

| accepted

Answered

PID for fixed distance

Hi @Andrea Tonelli I think your control design part is okay. But the divergence issue is probably related to the way you setup ...

PID for fixed distance

Hi @Andrea Tonelli I think your control design part is okay. But the divergence issue is probably related to the way you setup ...

29 days ago | 0

Answered

Why does matlab plot the unit step like a straight line?

Hi @Mark S System 1: s = tf('s'); sys1 = 1/s; % integrator system step(sys1) System 2: sys2 = zpk([], [...

Why does matlab plot the unit step like a straight line?

Hi @Mark S System 1: s = tf('s'); sys1 = 1/s; % integrator system step(sys1) System 2: sys2 = zpk([], [...

30 days ago | 1

| accepted

Answered

Minimization of cost function on MPC

Hi @Chandrakanth Pavanaskar You have a system model sys and I presume that you have written your own code for the ODE_solver to...

Minimization of cost function on MPC

Hi @Chandrakanth Pavanaskar You have a system model sys and I presume that you have written your own code for the ODE_solver to...

1 month ago | 0

Answered

How can i get smooth sine wave in MATLAB R2020b with any frequency.

Hi @Rohit To get a smooth sine wave, you are suggested to use this Sine Wave Function block: https://www.mathworks.com/help/...

How can i get smooth sine wave in MATLAB R2020b with any frequency.

Hi @Rohit To get a smooth sine wave, you are suggested to use this Sine Wave Function block: https://www.mathworks.com/help/...

1 month ago | 0

Answered

Implement these expressions in OCTAVE and plot on the same figure, the two functions: f=3t2 +2t-0.5 , g=2t cos(t) where the variable t varies from 0 to 10 with step 0.5.

@Jignasa, I typed exactly the same equations as you knowingly put on the description. But it gives error. Please check if the...

Implement these expressions in OCTAVE and plot on the same figure, the two functions: f=3t2 +2t-0.5 , g=2t cos(t) where the variable t varies from 0 to 10 with step 0.5.

@Jignasa, I typed exactly the same equations as you knowingly put on the description. But it gives error. Please check if the...

1 month ago | 0

Answered

PID Tune: Plant cannot be linearized

Hi @Arash Most likely your PV system has components that contain discontinuities. Thus, the Plant cannot be linearized. Howeve...

PID Tune: Plant cannot be linearized

Hi @Arash Most likely your PV system has components that contain discontinuities. Thus, the Plant cannot be linearized. Howeve...

1 month ago | 0

| accepted

Answered

State-Space Matrices

Hi @Aysel Alimirzayeva I added a simple example to show you. If you like this example, consider voting 👍 the Answer. Thanks! S...

State-Space Matrices

Hi @Aysel Alimirzayeva I added a simple example to show you. If you like this example, consider voting 👍 the Answer. Thanks! S...

1 month ago | 1

Answered

Plot step response of transfer function

Hi @Ye Ken Kok It is a input-output difference equation. Thus, you cannot use the continuous-time Laplace transform. Since the...

Plot step response of transfer function

Hi @Ye Ken Kok It is a input-output difference equation. Thus, you cannot use the continuous-time Laplace transform. Since the...

1 month ago | 0

Answered

tuning PID controller in simulink with actual hardware equipments

Hi @aakash dewangan If the transfer function is unknown, and the system is relatively simple, perhap the model-free extremum-se...

tuning PID controller in simulink with actual hardware equipments

Hi @aakash dewangan If the transfer function is unknown, and the system is relatively simple, perhap the model-free extremum-se...

1 month ago | 0

Answered

Help with formulating conditional logic.

Hi @Jeffrey Lewis There are a few ways to do it. But since you have written the data into the code, I think probably the simple...

Help with formulating conditional logic.

Hi @Jeffrey Lewis There are a few ways to do it. But since you have written the data into the code, I think probably the simple...

1 month ago | 0

| accepted

Answered

State-Space Matrices

Hi @Aysel Alimirzayeva It's because of negative feedback. The LQR function only computes . Making a substitution

State-Space Matrices

Hi @Aysel Alimirzayeva It's because of negative feedback. The LQR function only computes . Making a substitution

1 month ago | 1

| accepted

Answered

runge kutta for 2 order ODE

Hi @Rio Bratasena Assuming that the symbol is the Dirac impulse. please check if the following responses are expected wh...

runge kutta for 2 order ODE

Hi @Rio Bratasena Assuming that the symbol is the Dirac impulse. please check if the following responses are expected wh...

1 month ago | 0

Answered

Calculating system bandwidth using Function "bandwidth"

Hi @Alireza Aghdaei The function can distinguish from the input type. One requires a Dynamic System Model, the other requires a...

Calculating system bandwidth using Function "bandwidth"

Hi @Alireza Aghdaei The function can distinguish from the input type. One requires a Dynamic System Model, the other requires a...

1 month ago | 0

| accepted

Answered

how does matlab simulate electric field

Hi @abdullah Typically, the quiver() function can be used. You can also find a very good example on the simulation of Electri...

how does matlab simulate electric field

Hi @abdullah Typically, the quiver() function can be used. You can also find a very good example on the simulation of Electri...

1 month ago | 1

Answered

Solve system of equations graphically

Alternatively, you can also do like this: Solve or plot this polynomial: x = -2:0.01:2; y = x.^4 - 6; plot(x, y), gr...

Solve system of equations graphically

Alternatively, you can also do like this: Solve or plot this polynomial: x = -2:0.01:2; y = x.^4 - 6; plot(x, y), gr...

1 month ago | 0

Answered

What block is hydraulic/liquid on/off valve in Simulink?

Hi @Busuyi 2nd Edit: Based on your sketch, it should be a Gate Valve. https://www.mathworks.com/help/hydro/ref/gatevalve.html...

What block is hydraulic/liquid on/off valve in Simulink?

Hi @Busuyi 2nd Edit: Based on your sketch, it should be a Gate Valve. https://www.mathworks.com/help/hydro/ref/gatevalve.html...

1 month ago | 0

Answered

i need help to find impulse response of system h(t) at time t

Hi @Rushit Bhavsar I used the impulse() method. but you can try using the expm() method. Look up the example and verify with th...

i need help to find impulse response of system h(t) at time t

Hi @Rushit Bhavsar I used the impulse() method. but you can try using the expm() method. Look up the example and verify with th...

1 month ago | 0

Answered

Does the fuzzy inference system (Mamdani) use Forward Chaining or Backward ?

Hi @Sarah IF you understand that the Fuzzy System provides means of reasoning by inference in order to decide the truthness of ...

Does the fuzzy inference system (Mamdani) use Forward Chaining or Backward ?

Hi @Sarah IF you understand that the Fuzzy System provides means of reasoning by inference in order to decide the truthness of ...

1 month ago | 0

Answered

Can anybody give me the idea for implementing PID control for dc motor using state space equations through ode45 solver?

@MOHAMED ASWER Not sure how your DI/dc motor system, but I think the following example should give you the basic idea. tspan ...

Can anybody give me the idea for implementing PID control for dc motor using state space equations through ode45 solver?

@MOHAMED ASWER Not sure how your DI/dc motor system, but I think the following example should give you the basic idea. tspan ...

1 month ago | 0