zbzhsun

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14 years, 58 days

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These are replies submitted by zbzhsun

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 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 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?

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

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

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?  

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?  

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!

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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