Measurement system, machining system, measurement method, and computer-readable recording medium

A measurement method for measuring positions of a plurality of subjects by using an ultrasonic testing sensor, the measurement method comprising:

• creating, for each of the subjects, an ideal arcuate waveform as a measurement result of the ultrasonic testing sensor based on machining position information on the subject;
• creating a measurement arcuate waveform based on the measurement result;
• collating the ideal arcuate waveform and the measurement arcuate waveform with each other to estimate the position of the subject from the measurement arcuate waveform determined to correspond to any ideal arcuate waveform;
• and
• adding, to the measurement arcuate waveform, a waveform in antiphase to the measurement arcuate waveform with which the position of the subject has been estimated.

A non-transitory computer-readable recording medium on which an executable program for measuring positions of a plurality of subjects by using an ultrasonic testing sensor is stored, the computer program causing a computer to execute:

• creating, for each of the subjects, an ideal arcuate waveform as a measurement result of the ultrasonic testing sensor based on machining position information on the subject;
• creating a measurement arcuate waveform based on the measurement result;
• collating the ideal arcuate waveform and the measurement arcuate waveform with each other to estimate the position of the subject from the measurement arcuate waveform determined to correspond to any ideal arcuate waveform;
• and
• adding, to the measurement arcuate waveform, a waveform in antiphase to the measurement arcuate waveform with which the position of the subject has been estimated.