J Chen

Last seen: 5 Monate vor | Aktiv seit 2019

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Are Simscape's Principal Axes in a particular order from least to greatest moment of inertia?
The axes of the Inertia Sensor are the same as the axes of the frame that the sensor is attached to.

etwa ein Jahr vor | 0

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The issue encountered during the simulation of the Stewart platform: "The motion is singular."
Make sure the mechanism is not over-constrained. Add inertia between two connected joints.

etwa ein Jahr vor | 0

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simscape electrical long-term simulation
Yes. You can adjust the solver parameters in the Simulink Model Settings.

etwa ein Jahr vor | 0

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Simscape PS converter error
The filter in the PS converter is not used to filter the command in conentional sense. The filter is used to make a system solva...

etwa ein Jahr vor | 0

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Rigid Transform input data sequence
Use a rotation joint (such as the gimbal joint) and connect it to a solid. Specify motion indtead of torque as actuation. Here i...

etwa ein Jahr vor | 0

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How to observe the acceleration profile of a pneumatic (cylinder) system?
Mechanical sensors can be used to measure acceleration - Link.

etwa ein Jahr vor | 1

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Using a Simulink dynamic motorcycle in a driving scenario trajectory.
You need to use a lateral controller such as Pure Pursuit (in the Navigation or Robotics toolbox) or Stanley (in the Automatic D...

mehr als ein Jahr vor | 0

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How to access the eigenvalues and eigenvectors of a M-DOF system built in Simscape?
You can linearize the Simscape model.

mehr als ein Jahr vor | 0

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Building a nonlinear spring in Multibody
You can use the Trnasform Sensor block to sense motion, convert the output to Simulink signals, calculate corresponding forces u...

mehr als ein Jahr vor | 0

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Failed to load library 'RP_Simulator_Components' referenced by
You can download the library from https://www.mathworks.com/matlabcentral/fileexchange/67157-robotics-playground

mehr als ein Jahr vor | 0

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My "generic engine" block seems to not care about the throttle input.
The attached file contaons a running example. These are my suggestions: It seems that some inertia need to be associated with t...

mehr als ein Jahr vor | 0

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Free Fallen object simulation
You can use the Block Solid in the Body Elements. Also use the Transform Sensor in the Frames and Transforms to measure the tran...

mehr als ein Jahr vor | 0

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About adding motion directly to the end-effector
Connect a 6 DoF joint to the end effector and ground. Specify the displacements of the 6 DoF joint. Rember to set the Filtering ...

fast 2 Jahre vor | 0

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Number of variables vs number of equations in Simscape components
For a Simscape component, the variables include variables in the variables AND nodes sections as in this example. The number of ...

fast 2 Jahre vor | 0

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No simscape simulation log
Open Model Settings (ctrl-E). Select Data Import/Export. Uncheck Single simulation output.

fast 2 Jahre vor | 0

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Programmatically connect SimScape blocks
set_param('mymodel/Res2','position',[220,120,180,160]) is wrong. The third number (180) needs to be greater than the first numb...

fast 2 Jahre vor | 0

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simulink-ps converter output with on signal
You should see the signal at both scopes. Make sure the axis scalings are appropriate.

fast 2 Jahre vor | 0

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Need to assemble a submarine in simscape multibody make it move according to the precalculated trajectory. 1) All details of submarine are separated 2) How to make it move?
All components are rigidly connected in the model. You need to remove a solid line and add a joint between two components to mak...

fast 2 Jahre vor | 0

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How to use the DATA Inspector with SimScape model
You need to use Sensors and Transducers block to measure the variables, then convert the Simscape signals to the Simulink signal...

fast 2 Jahre vor | 0

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Is it possible to open matlab function block editor code in the standard script editor?
One option is to right click at the block and choose Open in New Window.

fast 2 Jahre vor | 0

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Communicating Simscape multibody with temperature and pressure sensors
Simscape Multibody doesn't deal with heat and temperature. You need to build a thermal model either with the Thermal Library in ...

etwa 2 Jahre vor | 0

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how to attach custom frame to cylindrical solid
You can use the Rigid Transform block as an alternative.

etwa 2 Jahre vor | 0

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Extract Spring data from the revolut joint
Expand the Sensing fiels and check the position. A port will appear to output the position. Use a PS-Siumulink Converter block i...

etwa 2 Jahre vor | 0

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ssc_mass_spring_damper_control example, all forces become 0 when no feedback?
The mass is stationary and the spring and damper generate no force at time zero. No force is applied to the mass if the PID is r...

etwa 2 Jahre vor | 0

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Is there any two wheeler drive cycle file in MATLAB or simulink?
You can download the speed profile in Excel at (https://cleanfuturemobility.com/driving-cycles/) and import it into Matlab/Simul...

etwa 2 Jahre vor | 0

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SIMSCAPE MULTIBODY: Apply Forces / Sense velocity of GLOBAL Center of Mass
First add a new frame to the Center of Gravity (CoG). Connect a 6 DoF Joint between the new frame to the World Frame. Specify ...

etwa 2 Jahre vor | 0

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How to get the coordinates of points in the simulink multibody model?
You can add a Transform Sensor to your system.

mehr als 2 Jahre vor | 0

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How to loop a model's output back to the input untill they both converge
Use a Delay block https://www.mathworks.com/help/simulink/slref/delay.html

mehr als 2 Jahre vor | 0

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(Simscape multibody) Is there any way to use a specific angle as a input for revolute joint?
Set the Actuation tab as follows: Torque - Automatically computed, Motion - Provided by Input. You also need Simulink-PS Convert...

mehr als 2 Jahre vor | 0

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Generic Engine stalling when load applied
You need to specify an initial speed for the propeller. It is done in the Variables tab of the Propeller Inertia block.

mehr als 2 Jahre vor | 0

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J Chen

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