A numerical control system according to the present invention controls machine drive systems included in a machine tool that performs machining using a tool, according to a numerical control program, and includes a coordinate transformation unit that acquires a disturbance force or a disturbance torque applied to each machine drive system, and coordinate-transforms the disturbance force or the disturbance torque into a tool reference coordinate system for output, and an identification unit that calculates cutting process parameters that determine characteristics of a cutting process model and dynamic characteristic parameters that determine characteristics of a dynamics model of the machine tool, using the disturbance force or the disturbance torque output from the coordinate transformation unit, states of the machine drive systems, predetermined equation models, and cutting conditions. The equation models define relationships between the cutting process parameters, the dynamic characteristic parameters, and the disturbance force or the disturbance torque.

A frequency characteristic measurement device that measures the frequency characteristic of a measurement target includes: a multi-sine signal generation unit that generates a multi-sine signal; a sweep sinusoidal wave generation unit that generates a plurality of sweep sinusoidal waves; an input signal switching unit that selects any one of the multi-sine signal and the sweep sinusoidal waves so as to input the selected one to the measurement target; a data acquisition unit that acquires, at a predetermined sampling frequency, sampling data of an input signal which is input to the measurement target and sampling data of an output signal which is output from the measurement target; and a characteristic calculation unit that calculates a frequency characteristic including the gain and the phase of the input and output signals in the measurement target from the sampling data of the input and output acquired.

The determination of a slip constant is simplified upon driving a motor for which the slip constant is unknown, based on variation of acceleration when accelerating an induction motor from start up to a predetermined speed. A parameter determination support device for motor driving includes: an automatic measurement part which automatically measures characteristic information including a speed during acceleration and acceleration upon driving an induction motor to accelerate from start up to a predetermined speed set in advance which is no more than a base speed of the induction motor, relative to each slip constant, based on a plurality of slip constants set in advance; and an estimation part which estimates, as a slip constant of the induction motor, a slip constant having the smallest variation in acceleration, among a plurality of slip constants, based on the characteristic information.

The determination of a slip constant is simplified upon driving a motor for which the slip constant is unknown, based on the acceleration time when accelerating an induction motor from start up to a predetermined rotation number. A parameter determination support device for motor driving includes: an automatic measurement part which automatically measures characteristic information including the acceleration time upon driving an induction motor to accelerate from start up to a predetermined rotation number set in advance, relative to each slip constant, based on a plurality of slip constants set in advance; and an estimation part which estimates, as the slip constant of the induction motor, a slip constant at which the acceleration time up to a predetermined rotation number becomes the shortest, among a plurality of slip constants, based on the characteristic information.

To determine a driving parameter for driving a motor having an unknown circuit constant in a simple way and to shorten time required for the determination. A parameter determination supporting device comprises: initial parameter determination means that determines an initial parameter for a trial run based on specification information about a motor driver and output specification information about a motor; program generation means that generates a trial run program based on the output specification information about the motor, the trial run program being used in a trial run for acquiring data necessary for adjusting a parameter for determining an output from the motor; automatic measurement means that automatically measures operation information determined by driving the motor by applying the initial parameter and following the trial run program; estimation means that estimates the circuit constant of the motor based on the operation information; and calculation means that calculates an optimum parameter conforming to the output specification of the motor based on the circuit constant.

A sinusoidal signal that is frequency-swept so as to have a frequency region in which each frequency has a different number of cycles and/or application duration is applied to a control system in a movement device that moves a movement target, time-series data for transmission characteristics obtained from said control system as a result of the application of the aforementioned sinusoidal signal is acquired, and said time-series data is subjected to spectral analysis. This allows the provision of a positioning control device and a frequency-characteristics measurement method that make it possible to optimize measuring precision while minimizing increases in the amount of time it takes to measure frequency characteristics.

To determine a driving parameter for driving a motor having an unknown circuit constant in a simple way and to shorten time required for the determination. A parameter determination supporting device comprises: initial parameter determination means that determines an initial parameter for a trial run based on specification information about a motor driver and output specification information about a motor; program generation means that generates a trial run program based on the output specification information about the motor, the trial run program being used in a trial run for acquiring data necessary for adjusting a parameter for determining an output from the motor; automatic measurement means that automatically measures operation information determined by driving the motor by applying the initial parameter and following the trial run program; estimation means that estimates the circuit constant of the motor based on the operation information; and calculation means that calculates an optimum parameter conforming to the output specification of the motor based on the circuit constant.

A machine implement includes sensors that measure a force imparted by the machine implement to a structure during a machining process. A sensor array coupled to the structure measures the vibrational response of the structure to the imparted force. Analysis software compares the imparted force to the vibrational response to generate a transfer function for the structure. Based on the transfer function, a tool-path of the machine implement may be adjusted such that the resulting structure has precise vibrational characteristics that substantially comply with a set of design goals for the structure.

An object of the invention is to provide a positioning apparatus and a positioning control device that may perform precise positioning by suppressing relative displacement of a movable point and positioning target objects. In a positioning apparatus including a movable stage, a stage position detector that detects a position of the movable stage, a control device that performs positioning of the movable stage, a positioning target object for positioning of the movable stage, and at least one or more sensors in a structure of the positioning target object or the movable stage, the control device includes an amount of relative displacement estimation unit that estimates an amount of relative displacement of the movable stage and the positioning target object using information of the sensor and information of the stage position detector, and a unit that controls the position of the stage using information calculated by the amount of relative displacement estimation unit.