| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a small electronic control unit for electric power steering. <P>SOLUTION: An electronic control unit for electric power steering integrally formed with an electric motor includes: a control board 200 that has the external connector that has first and second input terminals B+, B- that input the potentials of the positive electrode and the negative electrode of the external battery, the switching circuit that supplies the drive signal to the electric motor, an electrolytic capacitor 210 that smoothes the power supply voltage that becomes the original of the drive signal, and a control circuit that controls a switching circuit; and a unit cover that stores the control board 200. The control board 200 has a coil 220 that functions as a normal filter and first to fourth ceramic capacitors C1-C4 function as common filters. The capacity of C1 is the same with the capacity of C3, and the capacity of C2 that is smaller than the capacity of C1 is the same with the capacity of C4. <P>COPYRIGHT: (C)2013,JPO&INPIT |
