| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an angle sensor allowing high accuracy angle detection with detection resolution enhanced. <P>SOLUTION: The angle sensor 11 includes: a rotor 30 having a rolling groove 31 that spirally coils and rotating in conjunction with the rotation of a rotary shaft 20; a rolling element 40 that rolls in the rolling groove 31; a guide 60 guiding the moving direction of the rolling element 40 so that the position of the rolling element 40 and the rotation angle of the rotary shaft 20 are one-to-one related with each other; a magnetic sensor 50 for detecting a magnetic field changing according to the position of the rolling element 40 to output a detection signal corresponding to the position of the rolling element 40; and a signal processing circuit 80 for calculating the rotation angle of the rotary shaft 20 based on the detection signal. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
