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</o:shapelayout></xml><![endif]--></head><body lang=KO link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Dear all, <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Is there a method to estimate system matrix <b>A</b> (of zone or building) from simulation engines such as E+, ESP-r?? <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>(The<b> A</b> is commonly found in state-space equation, e.g. x¡¯ = <b>A</b>x + Bu.)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>As far as I know, only system identification method can be applied in this situation.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>(but, I not sure that it is reliable)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>If there is more advanced way or efficient way to estimate <b>A, </b>please let me know. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Any comments would be appreciated. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Thanks in advance. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Best Regards, <br>Deuk-Woo Kim <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>