andes.core.block.LeadLag#

class andes.core.block.LeadLag(u, T1, T2, K=1, zero_out=True, name=None, tex_name=None, info=None)[source]#

Lead-Lag transfer function block in series implementation.

     ┌───────────┐
     │   1 + sT1 │
u -> │ K ─────── │ -> y
     │   1 + sT2 │
     └───────────┘

Exports two variables: internal state x and output algebraic variable y.

Parameters:

uBaseVar or BaseParam: Input signal.
T1BaseParam: Numerator (lead) time constant.
T2BaseParam: Denominator (lag) time constant. Also used as the t_const of the internal state x.
KBaseParam or numeric, optional: Static gain (default 1).
zero_outbool, optional: If True (default), bypass the block as y = K * u when T2 <= 0. Set to False only if T2 > 0 is guaranteed by the data.

__init__(u, T1, T2, K=1, zero_out=True, name=None, tex_name=None, info=None)[source]#

Methods

`define`()	Notes
`enforce_tex_name`(fields)	Enforce tex_name is not None
`export`()	Method for exporting instances defined in this class in a dictionary.
`f_numeric`(**kwargs)	Function call to update differential equation values.
`g_numeric`(**kwargs)	Function call to update algebraic equation values.
`j_numeric`(**kwargs)	Per-iteration numerical Jacobian update.
`j_reset`()	Helper function to clear the lists holding the numerical Jacobians.
`j_setup`()	One-time Jacobian sparsity pattern and constant value setup.

Attributes

class_name

Return the class name.