=========== Control API =========== lti === .. module:: sympy.physics.control.lti .. autoclass:: TransferFunction :members: .. autoclass:: Series :members: .. autoclass:: Parallel :members: .. autoclass:: Feedback :members: .. autoclass:: TransferFunctionMatrix :members: .. autoclass:: PIDController :members: .. autoclass:: MIMOSeries :members: .. autoclass:: MIMOParallel :members: .. autoclass:: MIMOFeedback :members: .. autoclass:: StateSpace :members: .. autofunction:: gbt .. autofunction:: bilinear .. autofunction:: forward_diff .. autofunction:: backward_diff