Design Method by use of control similarity principle applied for a load simulator of electric-motor driven injection molding machine

The control engineers make adequate evaluations of the control unit with respect to the control performance, cost, reliability and so on by using the various verification measures for example, (1)computer simulation, (2)simulator apparatus and (3)actual equipment. In the initial evaluation it is efficient to use the measures of computer simulation and in the final evaluation it is necessary to use the measures of actual equipments. In the intermediate stage of evaluation the measures of simulator apparatus is an important factor which influences the evaluations of control performance and cost. In this paper the verification measures of simulator apparatus is considered which consists of the simulator apparatus for the controlled unit, and the actual equipments for the control unit and I/F unit and the design method of the simulator apparatus by use of control similarity principle is proposed in order to do the efficient design of simulator apparatus and the accurate evaluation of control performance of the total system. The method to derive the dimensionless parameters to establish the control similarity principle and the design method of simulator apparatus by use of the dimensionless parameters are revealed. As a practical example the design of a load simulator apparatus of the electric-motor driven injection molding machine is described.