Control¶
Currently, sympy.physics.control is able to deal with LTI
(Linear, time-invariant) systems. The TransferFunction class is used to
represent Continuous-time Transfer functions in the Laplace domain; where Transfer
functions are input to output representations of dynamic systems. The additive
property is used for transfer functions in the Parallel class, and the
multiplicative property is used for transfer functions in the Series class.
Also, there is a Feedback class which is used to represent negative feedback
interconnection between two input/output systems. MIMO systems are also supported
with TransferFunctionMatrix as the base class for representing one. MIMOSeries,
MIMOParallel and MIMOFeedback are MIMO equivalent of Series, Parallel
and Feedback classes.
The advantage of this symbolic Control system package is that the solutions obtained from it are highly accurate and do not rely on numerical methods to approximate the solutions. Symbolic solutions obtained are also in a compact form that can be used for further analysis.