| 摘要 |
In an electric motor control apparatus including an electric motor 4 for driving a load machine, a rotation detector 3 for detecting a rotating angle of the electric motor 4, and a servo control device 2 for controlling the electric motor 4, a calculating device 1 automatically calculates protruded shapes to be a resonance frequency and an anti-resonance frequency from frequency characteristics obtained from an operation command signal 8 and a rotation detector signal 9, and furthermore, calculates errors of frequency characteristics calculated by frequency characteristic equations 20 for a 2-inertia model and a rigid body model from a frequency characteristic obtained by a measurement, and compares the minimum values of calculated values in the frequency characteristics of the 2-inertia model and the rigid body model and measured values respectively, thereby automatically modeling the characteristic of the machine. <??>Consequently, it is possible to provide a machine model estimating device of an electric motor control apparatus which can easily estimate a machine model without using an expensive measuring apparatus even if an operator has neither advanced expertise nor experiences, and furthermore, is inexpensive. <IMAGE> |
