|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||318/602 ; 318/254|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 9 인용 특허 : 7|
An encoder produces a plurality of different phase signals. A detecting unit detects all edges of the plurality of different phase signals from the encoder. A central processing unit (CPU) measures edge intervals of edges succeeding with respect to time. A first process is for obtaining a control target value on the basis of a value measured by the CPU, and a second process is for controlling the drive speed of the drive source on the basis of the result of comparing the value measured by the CPU and the control target value.
[ What is claimed is:] [1.] A motor velocity controlling method utilizing:an encoder for producing a plurality of different phase signals according to a rotation amount of a motor;detecting means for detecting all edges of said plurality of different phase signals; andmeasuring means for receiving said edges detected by said detecting means to measure intervals of edges succeeding with respect to time,said motor velocity controlling method comprising:a first process for obtaining a control target value on the basis of a value produced from said measuring...