Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enhanced Contour Tracking: a Time-Varying Internal Model Principle-Based
  Approach   We propose a time-varying internal model principle-based contouring control
(TV-IMCC) methodology to enhance the contour tracking performance with both
axial and contour error reduction. The proposed TV-IMCC is composed of two main
parts: an extended position domain framework with master-slave structures for
contour regulation, and the time-varying internal model controllers for axial
tracking precision improvement. The important features of the TV-IMCC lie in:
1) it is of an asymptotical stability for irregular contour tracking compared
to the cross coupled control (CCC); 2) it does not lead to system nonlinearity
and hence is well-suited for tracking multi-axis contours compared to the task
coordinate frame (TCF) control; 3) it reduces the tracking error and extends
the class of contours can be tracked compared to the position domain control
(PDC). Furthermore, the stability analysis of the closed-loop system with the
proposed TV-IMCC methodology is provided. And various simulation and
experimental results validate the TV-IMCC with enhanced contour tracking
performance. A major potential of the proposed TV-IMCC is in the field of
multi-axis ultra-precision contour tracking. Moreover, the TV-IMCC does not
require strict precision of the master axis, and hence it can be easily applied
to macro-micro motion systems, such as galvanometer scanner-stage synchronized
systems.

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The categories of this paper are: nucl-th
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The categories of this paper are: math-ph
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The categories of this paper are: econ
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: solv-int
2
The categories of this paper are: math
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The categories of this paper are: supr-con
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The categories of this paper are: bayes-an
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The categories of this paper are: cond-mat
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The categories of this paper are: chem-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: mtrl-th