MOTOR DRIVING APPARATUS INCLUDING THRUST CONSTANT CALCULATION UNIT FOR CALCULATING MOTOR THRUST CONSTANT OF LINEAR VIBRATION MOTOR, AIR CONDITIONER, REFRIGERATOR, CRYOGENIC FREEZER, HOT WATER SUPPLY, AND PORTABLE PHONE

摘要

PURPOSE: A motor driving apparatus, an air conditioner, a refrigerator, a cryogenic freezer, a hot water supply, and a portable phone are provided to achieve improved accuracy of position calculation of a mover of a linear motor by using a motor thrust constant having an accurate value corresponding to each linear vibration motor. CONSTITUTION: A motor driving apparatus(101a) comprises a motor driver(1a) having an operation mode for applying driving voltages to a linear vibration motor(100) and a non-operation mode for applying DC voltages to the linear vibration motor such that a thrust of a mover of the linear vibration motor is generated; a thrust information output unit for outputting thrust information indicating thrust of the mover generated by the application of DC voltages to the linear vibration motor; a thrust constant calculation unit(4a) for calculating a motor thrust constant of the linear vibration motor by dividing the thrust indicated by the thrust information output unit by the DC current supplied to the linear vibration motor; and a mover position calculation unit(2a) for calculating position of the mover on the basis of the motor thrust constant calculated by the thrust constant calculation unit.