ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,561, issued on March 18, was assigned to DENSO Corp. (Kariya, Japan).
"Motor control device" was invented by Hidenobu Suzuki (Kariya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A blower motor control device stops energization to a motor when a rotation speed of a rotor reaches a learn rotation speed, and acquires a correction amount as a new learn value for correcting a position error of the rotor relative to a Hall element by using an induced voltage in a coil of the motor and a detection signal from a rotation sensor. The blower motor control device stores the new learn value in a ROM. The blower motor control device corrects the positi...