MEASURING METHOD FOR ROTATIONAL SPEED OF SPHERE USING ACCELEROMETERS

摘要

PURPOSE: A rotational speed measuring method of a sphere is provided to accurately and easily calculate rotational speed of the sphere by measuring the rotational speed of the sphere using acceleration. CONSTITUTION: A pair of accelerometers is respectively installed on an accelerometer system coordinate shaft consisting of x, y, and z shafts(S100). The x, y, and z shafts of the pair of accelerometers are in accord with x, y, and z shafts of a system coordinate shafts(S200). A sphere is rotated and acceleration which is added to the x, y, and z shafts of the pair of accelerometers is measured at in order when current is applied to an electromagnet installed in around the sphere(S300). The acceleration which is created by the rotation of the sphere is calculated only(S400). The rotational speed of the sphere for each coordinate shaft is calculated from the calculated acceleration(S500). [Reference numerals] (S100) A pair of accelerometers is installed; (S200) Accelerometer system coordinate shaft is arranged; (S300) Acceleration is measured; (S400) The acceleration is calculated; (S500) Rotational speed is calculated