Methods for product data management and corresponding systems and computer-readable mediums. The motor is calibrated such that for each torque command, there are corresponding direct-axis and quadrature axis current commands. The pressure inside the processing chamber 102 is set at 50 mTorr. The tensile strength of the two-sided tape is greater than the shear adhesive strength between the two-sided tape and the plate, so that the two-sided tape is prevented from tearing partway when the brush-shaped member is peeled off. A process of generating an indication on absence of a sound input includes providing an audio signal based on a sound input and comparing the audio signal to a check value, providing a status signal indicating a presence and absence of the sound input.