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Ryan Takatsuka


29 total contributions since 2017

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Question


Spectral analysis in MATLAB script
I am trying to minimize the spectral leakage in the frequency analysis of a signal to obtain accurate magnitudes of all the freq...

7 mesi ago | 1 answer | 1

1

answer

Question


Filtered signal's frequency response is not correct
I am trying to pass a pure noise signal through a filter, but the frequency response is not what I expected. I have attached th...

7 mesi ago | 0 answers | 0

0

answers

Answered
Log equation log(x) not plotting correctly
y_3 contains complex numbers with real and imaginary components, and the plot() function only plots the real component of the co...

8 mesi ago | 1

Question


Element-wise product in Simulink
I would like to perform an element-wise multiplication (Hadamard product) between 2 matrices in Simulink. The "multiply" block ...

10 mesi ago | 0 answers | 0

0

answers

Answered
Problem having isoutlier detecting anything
The outlier detection generally works best on single data point outliers (not multiple in a row). Your data has a large amount ...

10 mesi ago | 0

Answered
measuring force in a spring dashpot model
The _Ideal Force Sensor_ should be in series with the mechanical system. See the attached example.

11 mesi ago | 1

| accepted

Answered
How can I control the pulse generator percentage with variable?
You can create a custom PWM subsystem where the pulse percent is the input. See attached example.

11 mesi ago | 0

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Answered
How can I measure percentage of pulse signal
You are probably better off filtering the PWM signal to find the interval percentage. See the attached example.

11 mesi ago | 0

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Answered
How to have a plot3 vector and sphere on same figure?
Try something like this: figure(1) %creating animation window sphere % creating sphere for visualization alph...

11 mesi ago | 0

| accepted

Answered
PID to control solenoid valves on simulink?
Typically, solenoid valves only operate as binary valves (either on or off with no in between). From what you are describing it...

11 mesi ago | 0

Answered
update parameter during simulink simulation
If you use external gains for the PID block, you can easily modify them during the simulation. Because you want the PID to swit...

11 mesi ago | 2

| accepted

Answered
Is it possible draw left y-axis with red color and the right y-axis with blue color?
Yes it is. Here is an example of a plot with different y axis colors: t = linspace(0,1,1000); a = sin(2*pi*t); b = s...

11 mesi ago | 1

| accepted

Answered
After importing data from excel and plotting them, I need to subtract the noise and extract only the five peaks, and finally to find the area under the peaks? Can anyone tell me what function to use?
You can probably apply a highpass filter to the data to isolate the peaks. This should remove the low frequency/offset of the p...

11 mesi ago | 0

| accepted

Solved


Prime Product
My professor has given a sequence of N numbers as a1, a2, ..., aN and asked me to find the smallest possible value of ai * aj su...

11 mesi ago

Solved


5th Time's a Charm
Write a function that will return the input value. However, your function must fail the first four times, only functioning prope...

11 mesi ago

Solved


"Cody" * 5 == "CodyCodyCodyCodyCody"
*Alice*: What? *"Cody" * 5 == "CodyCodyCodyCodyCody"*? You've gotta be kidding me! *Bob*: No, I am serious! Python supports...

11 mesi ago

Solved


The 5th Root
Write a function to find the 5th root of a number. It sounds easy, but the typical functions are not allowed (see the test su...

11 mesi ago

Solved


Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

11 mesi ago

Solved


Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

11 mesi ago

Solved


Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Examp...

11 mesi ago

Solved


Add two numbers
Given a and b, return the sum a+b in c.

11 mesi ago

Solved


Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

11 mesi ago

Solved


Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

11 mesi ago

Solved


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

11 mesi ago

Answered
Saving figure data statistics without using the GUI?
You can create a function to collect this data for you. To create a structure with the same format as Tools -> Data Statistics ...

11 mesi ago | 0

| accepted

Question


Simulink Zoom FFT - error in native MATLAB example (dspzoomfft)
I am trying to understand the Zoom FFT algorithm, and am playing around with the native MATLAB example for Simulink (opened by t...

oltre un anno ago | 0 answers | 0

0

answers

Question


Improvements for rapid Simscape changes with discrete valves
I have a Simscape model that consists of a few valves and constant volume chambers. Every time a valve is opened, the instantan...

circa 2 anni ago | 1 answer | 0

1

answer

Question


Simscape gas pipe element causes initialization errors
I have a Simscape model with a long thin (an inner diameter of 0.030") tube in the middle. When the tube is shorter (less than ...

circa 2 anni ago | 1 answer | 0

1

answer

Question


3/2 pneumatic valve model
I am trying to design a 3/2 pneumatic valve (3 ports and 2 positions). The valve has a supply port, common port, and an exhaust...

circa 2 anni ago | 1 answer | 0

1

answer