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zbzhsun

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14 years, 254 days
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These are replies submitted by zbzhsun

Flexible Robot Arm...

zbzhsun 32
July 10 2010
0 0

I am building a robot arm,now I want to replace the rigid arm with the flexible arm. How can I control the arm's form?

Thank you! But another question....

zbzhsun 32
July 10 2010
0 0

Thank you for your answer, Dr. Lai.

The Rigid Body Frame has a parameter "r" to define "The x,y,z offset of the outboard (white) frame with respect to the inboard (gray) frame",the "orientation" relative to a rigid body center of mass. how can "The flexible beam" define the orientation?? When used to build a flexible body system, how to define the inertia?

Thank you! But another question....

zbzhsun 32
July 10 2010

Thank you for your answer, Dr. Lai.

The Rigid Body Frame has a parameter "r" to define "The x,y,z offset of the outboard (white) frame with respect to the inboard (gray) frame",the "orientation" relative to a rigid body center of mass. how can "The flexible beam" define the orientation?? When used to build a flexible body system, how to define the inertia?

Yes!...

zbzhsun 32
June 01 2010
0 0

That's what I mean. ordinary C code or s-function code, which is faster?

Yes!...

zbzhsun 32
June 01 2010

That's what I mean. ordinary C code or s-function code, which is faster?

For Multibody Systems...

zbzhsun 32
June 01 2010
0 0

Thanks for your answer. It really works. I got the data that I want, but just as you said,  the number of the resulting equations increased, and the simulation time is longer. If I  transform the model to C code, if it will work for real-time simulation? If it won't, is there anyway to modify the code?  

For Multibody Systems...

zbzhsun 32
June 01 2010

Thanks for your answer. It really works. I got the data that I want, but just as you said,  the number of the resulting equations increased, and the simulation time is longer. If I  transform the model to C code, if it will work for real-time simulation? If it won't, is there anyway to modify the code?  

hello...

zbzhsun 32
April 26 2010
0 0

I am trying to build a model of free-floating spacerobot which has a 6dof arm.The gravity is zero. When the motor turns on and the arm moves, the base's position will change because of the reacting force.  I have seen the examples of the "rollercoster",it uses two"Prismatic" and one "Revolute" to simulate the track of rollercoaster ,and the example  "quadrocopter". So, I want know if the "free motion" component is very useful or efficient for my model.  I have tried several times,when the base is fixed to the"free motion" which is next to the  "fixed frame", it will not work unless the arm is fixed to a "fixed frame" too. So i use a "XYZ translational" and three "revolute"s instead. It worked ,but  the simulation  was slow. And when the arm has morn than four joints, there will be a "java heap space" message.whether or not it is because the performance of my computer is low. Or I shouldn't  build it like that?  

I also want to ask, when maplesim is applied to the realm of spacerobot , what's the advantage,and which things are fittest for maplesim? (Like Michel Lambert does, a researcher at the AMTC,his example on the website  is  studying the effect of dynamic parameters such as elasticity on robotized contact tasks).Can you introduce some?

Thank you very much!

hello...

zbzhsun 32
April 26 2010

I am trying to build a model of free-floating spacerobot which has a 6dof arm.The gravity is zero. When the motor turns on and the arm moves, the base's position will change because of the reacting force.  I have seen the examples of the "rollercoster",it uses two"Prismatic" and one "Revolute" to simulate the track of rollercoaster ,and the example  "quadrocopter". So, I want know if the "free motion" component is very useful or efficient for my model.  I have tried several times,when the base is fixed to the"free motion" which is next to the  "fixed frame", it will not work unless the arm is fixed to a "fixed frame" too. So i use a "XYZ translational" and three "revolute"s instead. It worked ,but  the simulation  was slow. And when the arm has morn than four joints, there will be a "java heap space" message.whether or not it is because the performance of my computer is low. Or I shouldn't  build it like that?  

I also want to ask, when maplesim is applied to the realm of spacerobot , what's the advantage,and which things are fittest for maplesim? (Like Michel Lambert does, a researcher at the AMTC,his example on the website  is  studying the effect of dynamic parameters such as elasticity on robotized contact tasks).Can you introduce some?

Thank you very much!

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