PROBLEM TO BE SOLVED: To provide a facility control system and a facility control method which are capable of appropriately capturing condition changes of characteristic changes or environmental changes of involving factor apparatuses, and controlling a control factor.SOLUTION: A facility control system comprises: an information collecting part 11 which measures a value at which involving factor apparatuses 6a,6b are actually driven as an involving factor operation value； a database 12 which stores a control factor measured value； an error determination part 13a which determines whether or not the involving factor apparatuses are normally operating based on the involving factor operation value and an operation value obtained from response characteristic； a restriction management part 13b which changes a drive amount restriction condition in the case of determination where the involving factor apparatuses have an error； an estimation formula generation part 14 which calculates a contribution amount of each involving factor apparatus under the drive amount restriction condition to generate an estimation formula achievably so as to make the amount match a target value of a control factor； and a drive part 15 which drives the involving factor apparatuses based on the contribution amount included in the estimation formula generated by the estimation formula generation part.SELECTED DRAWING: Figure 1【課題】関与因子機器の特性変化や環境変化に対しても適切にこれらの状況変化を取り込んで管理因子の制御が行える施設制御システム及び施設制御方法を提供する。【解決手段】関与因子機器６ａ，６ｂが実際に駆動された値を関与因子動作値として計測する情報収集部１１と、管理因子実測値を記憶するデータベース１２と、関与因子動作値と応答特性から求まる動作値とに基づき関与因子機器が正常に動作しているか否かを判断する異常判定部１３ａと、関与因子機器に異常があると判断された場合には、駆動量制約条件を変更する制約管理部１３ｂと、管理因子の目標値と一致するように達成できるように、駆動量制約条件の下で各関与因子機器の寄与量を算出して予測式を生成する予測式生成部１４と、予測式生成部が生成した予測式に含まれる寄与量に基づき関与因子機器を駆動する駆動部１５と、を備える。【選択図】図１
