hardness calculation system and hardness calculation methods

摘要

PROBLEM TO BE SOLVED: To highly accurately calculate hardness of an object independently of characteristics of how to become depressed when the object is pressed.;SOLUTION: In a hardness calculation system 1000, a voltage/displacement conversion coefficient C_md is calculated by comparing a second order differential waveform created based on voltage information acquired from a magnetic sensor 19 with an acceleration waveform based on acceleration information acquired from an acceleration sensor 13 and a spring constant (hardness) of an object is calculated by dividing a previously found voltage/pressure conversion coefficient C_mp by the voltage/displacement conversion coefficient C_md, so that the hardness of the object can be highly accurately calculated independently of the characteristics of how to become depressed when the object is pressed.;COPYRIGHT: (C)2013,JPO&INPIT