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J Chen


Last seen: 4 dagar ago
63 total contributions since 2019

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Answered
Hi, how do i make the block/ball/or table objects that the serial manipulators interact with?
You can use the Spatial Contact Force block to model the contact between a table and an object and between a gripper and an obje...

8 dagar ago | 0

Answered
Does force/torque get transfered throughtout an assembly consisting of solid blocks assembled with rigid transforms and connected with joints and gear constraints?
Simscape models are just link physical system. You apply force/torque at a particular point. The system with reponse to the forc...

8 dagar ago | 1

Answered
How to follow a SimScape Multibody model in Mechanics Explorer
I couldn't figure out how to use the Keyframes camera either. So I settle with the Tracking camera. The easiest way to track an ...

ungefär en månad ago | 1

| accepted

Answered
Simscape Multibody Add-On Download Error
Did you try to install the trial license? I had the same problem. Try to request a trial using the Mathworks website instead of ...

2 månader ago | 1

Answered
How to create Simscape multibody link with a hole
https://www.mathworks.com/help/physmod/sm/ug/compounding-body-elements.html#mw_14364c3d-f2ab-4f78-bc99-d6a67541e061

3 månader ago | 0

Answered
What physics engine does Simscape Multibody use?
Simscape, including all its toolboxes, is based on Simscape language. An introduction can be found at https://www.semanticschola...

3 månader ago | 0

Answered
Symbolic and Jacobian Matrix
Try the following. They gave what you want in Matlab R2019b. syms m phi theta psi u1 u2 u3 u4 N = sym('n%d%d', [3 4]) T = [1 ...

3 månader ago | 1

Answered
How to change the density of Simscape Multibody demos?
simmechanics.demohelpers.densities is a built-in matlab function. The output is a structure that contains the density of aluminu...

3 månader ago | 0

Answered
How to create a single link manipulator model in Simulink?
Use two integrators in series. The input of the first integrator is acceleration, the output is velocity. The input of the secon...

3 månader ago | 0

Answered
Modeling Simscape Spherical Air Bearings
Use the Spherical Joint in the Simscape Multibody to represent the air bearing.

3 månader ago | 0

Answered
Cannot update visualization,File Solid
Seems like SS MB should be able to import Unigraphics NX and STEP files https://www.mathworks.com/help/physmod/sm/ref/filesolid....

4 månader ago | 0

Answered
How to link simelectronics with sim multibody (to make electromechanical system)??
Connect a torque sensor and a PS-Simulink Converter block to the simelectronics. Use Simulink-PS converter and External Force an...

4 månader ago | 0

Answered
Is it possible to apply an external force to different bodies of a multi-body system based known center of pressure coordinates?
Use a External Force and Torque block at each point the force is applied. You can use sensors to get forces and displacements an...

4 månader ago | 0

Submitted


Quaternions to Euler angles conversion
Convert quaternions to Euler angles using Z-Y-X rotation sequence

4 månader ago | 5 downloads |

Answered
Sum of matrix signals in Simulink
Something wrong with the dB that comes in from Inport 2. The picture shows Inport 2 has a dimension of 1 instead of 5.

4 månader ago | 0

Answered
Processing 2D into 3D matrix
You need to change the following statement x = 0:1:11 x has 12 elements but the modeshapes array only allows 11 elements in th...

4 månader ago | 0

Answered
How can I produce a Torque signal to activate an External Force and Torque simulink block?
Connect a Solid to a Revolute joint. Change the Actuation-Torque property of the Revolute Joint to Provided by Input. You then a...

5 månader ago | 0

Answered
How can I model a Whitworth quick return mechanism in SimScape?
Download this model and take a look: https://www.mathworks.com/matlabcentral/fileexchange/74465-whitworth-quick-return-mechanism...

5 månader ago | 0

| accepted

Submitted


Whitworth Quick Return Mechanism
Simulate Whitworth Quick Return Mechanism with Simscape Multibody

5 månader ago | 5 downloads |

Answered
Gauss Siedel code not working
Put three dots (...) after the = at line 20 to signal that line 21 is the continuation of line 20.

5 månader ago | 0

Answered
Arduino Encoder Application with Simulink Problem
You can use Simulink Delay block which store you last data. Type delay in the search box in the Simulink Library Browser to loca...

5 månader ago | 1

| accepted

Submitted


CRC-16
A function to generate CRC-16 (16-bit Cyclic Redundancy Check)

6 månader ago | 20 downloads |

Answered
How do I select only 100 images in a folder of 200 images, according to a list of 100 different names ?
Use the folllwoing command to get a structure that contains file information listing = dir('*.jpg'); Use the folllwoing comman...

6 månader ago | 0

Answered
How to take mean of each row/column of matrix with while loop
You need to update i and j (add 1 to them) at the end of each while loop.

6 månader ago | 0

| accepted

Answered
Help writing this integral
Use integral or trapz to integrate, then take the log. You need to find out the expression for p and the integration limits.

6 månader ago | 0

Answered
Hello, I am getting this error. Can anyone please help me solving it? Thanks
I guess that the temperature units are 'K', 'degC', 'degF', etc.

6 månader ago | 0

Answered
Difference between Simscape and Simulink
Simulink uses block diagram approach. The signal flow is unidirection. Simscape uses physical modeling approach. The signal flow...

6 månader ago | 0

Answered
How do you add physical signal lines programmatically?
use h1 = get_param('mymodel/mySubsystem/C_1','PortHandles'); to get the port handles. Use add_line to draw line between the hand...

7 månader ago | 0

Answered
User-defined MATLAB function block in Simulink/Simscape
use a statement like z = t / k; % don't use x to get the argument for the table lookup. Then use interp1(x,y,z) to find your ...

7 månader ago | 1

| accepted

Answered
modelling in matlab of differential equation
you need an equation for dhw/dt, then use a matlab ode solver to solve the equations. see https://www.mathworks.com/help/matlab/...

7 månader ago | 0

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