Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Speed-sensorless state feedback control of induction machines with LC
  filter   A speed-sensorless state feedback controller for induction machines (IMs)
with LC filter is proposed. The estimation of speed and remaining states is
based on a speed-adaptive observer, requiring only the measurement of the
filter input currents. The motor currents are controlled by a state-feedback
controller with proportional and integral control action to achieve fast and
asymptotic set point tracking. Observer \emph{and} controller gains are
calculated offline using linear quadratic regulator (LQR) theory and updated
online (gain-scheduling), in order to guarantee stability and improve control
performance in the whole operation range. The proposed control scheme is
validated by simulation and experimental results including several
zero-crossings of the mechanical speed. It is shown that the overall control
system performs well under various load- and speed conditions; while its tuning
remains easy making it attractive also for industrial application.

9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat