pystra.system.TieSetSystem#

class TieSetSystem(tie_sets, components=None, name=None)[source]#

Bases: System

A system described by tie sets.

Each tie set is a group of components that keeps the system safe when all components in that set are safe. The system fails only when all tie sets have failed.

Parameters:

tie_sets (iterable of iterables) – Tie sets. Entries may be components, subsystems, callables, or string names when components is supplied.
components (mapping or iterable, optional) – Component catalogue used to resolve string names in tie_sets.
name (str, optional) – System name.

Methods

`as_limit_state`	Return the composed system as a Pystra `LimitState`.
`component_failure_masks`	Return failure masks for each leaf component.
`component_values`	Evaluate all leaf component limit states.
`evaluate`	Evaluate the equivalent scalar system limit state.
`failure_mask`	Return a boolean mask where the system is failed.
`getLimitState`	Return the composed system as a Pystra `LimitState`.
`iter_components`	Yield all leaf components in the system.

as_limit_state()#: Return the composed system as a Pystra LimitState.

component_failure_masks(**kwargs)#: Return failure masks for each leaf component.

component_values(**kwargs)#

Evaluate all leaf component limit states.

Returns:: Mapping component names to their evaluated limit-state values.
Return type:: dict
Raises:: ValueError – If duplicate component names would make the mapping ambiguous.

property components#: Flat tuple of all leaf components in the system.

evaluate(**kwargs)#: Evaluate the equivalent scalar system limit state.

failure_mask(**kwargs)#: Return a boolean mask where the system is failed.

getLimitState()#

Return the composed system as a Pystra LimitState.

This legacy-style alias mirrors the existing Pystra getter naming.

iter_components()#: Yield all leaf components in the system.