Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: "RollRoller" Novel Spherical Mobile Robot Basic Dynamical Analysis and
  Motion Simulations   This paper introduces novel air actuated spherical robot called "RollRoller".
The RollRoller robot consists of two essential parts: tubes covered with a
shell as a frame and mechanical controlling parts to correspond movements. The
RollRoller is proposed to be high potential alternative for exploration and
rescue missions robots because robot utilizing its locomotion via all possible
deriving methods (gravity, torque and angular momentum forces). In beginning ,
characteristic and role of each of component and features were explained. Next,
to determine the uniqueness of this robot, the known and other extra possible
motions are shown by proposing their own algorithmic movements. To illustrate
main motion of this robot was inherent to mathematical models, the forward
direction dynamical behavior on flat surface was derived. Additionally, Matlab
Simulink was used to plot the results to validate the behavior for both
fractional and non-fractional terrains. Lastly, after designing the model of
robot in Solidworks Program, Adams/View visualization software ( the robot
simulated form ) was utilized to proof the Matlab Simulink results and to show
the more detailed and complete form of locomotion including the forward
direction and circular locomotion in proposed robot.

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The categories of this paper are: atom-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: eess
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The categories of this paper are: ao-sci
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The categories of this paper are: acc-phys
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-th
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The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
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The categories of this paper are: nlin
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The categories of this paper are: physics
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: q-bio