1. A control object model generation device characterized by comprising: a model storage unit which stores a mathematical model of a controlled system in advance; a controller storage unit which stores in advance a controller algorithm for virtually generating a controller; a simulation computing unit which executes simulation for simulating a control response with respect to a control system including the controlled system represented by the mathematical model stored in said model storage unit and the controller represented by the controller algorithm stored in said controller storage unit; a control feature amount evaluation item storage unit which stores, as a control feature amount evaluation item in advance, a control feature amount which is used to evaluate a simulation result obtained by said simulation computing unit; a real control feature amount storage unit which stores in advance a real control feature amount corresponding to the control feature amount evaluation item which is obtained from a control result on an actual controlled system; a model control feature amount computing unit which calculates a model control feature amount corresponding to the control feature amount evaluation item on the basis of a simulation result obtained by said simulation computing unit; an evaluation function computing unit which computes an evaluation function value indicating a similarity between the real control feature amount stored in said real control feature amount storage unit and the model control feature amount calculated by said model control feature amount computing unit; and a controlled system model parameter search computing unit which causes said simulation computing unit to execute simulation while sequentially changing a value of a controlled system model parameter set in the mathematical model stored in said model storage unit, and determines, as a model parameter search result, a value of the controlled system model parameter which optimizes the evaluation function value obtained by said evaluation function computing unit.