摘要
In modern control engineering and simulations,it is perferable to get the governing equationsby an easier way,so that state equations have been widely used.There are many rules to select statevariables,but the uses of these rules may have different forms of limitations and exceptions,yet afully argumented bond graph can be processed in proper way to select the state variables and toyield the state equations.The state variables are usually related to the energy-storing elements.State equations can easily be derived from bond graph by means of constitutive relations and struc-tural relations.
In modern control engineering and simulations,it is perferable to get the governing equations by an easier way,so that state equations have been widely used.There are many rules to select state variables,but the uses of these rules may have different forms of limitations and exceptions,yet a fully argumented bond graph can be processed in proper way to select the state variables and to yield the state equations.The state variables are usually related to the energy-storing elements. State equations can easily be derived from bond graph by means of constitutive relations and struc- tural relations.
