| 摘要 |
<P>PROBLEM TO BE SOLVED: To eliminate the need of a complicated structure and many mechanism components, and to strongly hold the fully closed state of a door by electric means. <P>SOLUTION: An electric door controller includes: a position detector 5 and a speed detector 6 of a door D; a speed controller 2 for negatively feeding back the speed of the door D and generating a normal thrust command value; a door command generator 1A for generating a pressing thrust command value for blocking the opening operation of the door D in the fully closed state; a thrust command selector 3 for selecting either of the normal thrust command value and the pressing thrust command value corresponding to the position detection value of the door D; and a door driving mechanism 4 for operating an electric motor according to the selected thrust command value. The electric door controller has an electric damper element 7A for generating a second pressing thrust command value larger than the pressing thrust command value by using an electric damper coefficient as a machine constant and the speed detection value. The thrust command selector 3 normally selects the normal thrust command value, and when the door D in the fully closed state is opened by external force, selects the second pressing thrust command value. <P>COPYRIGHT: (C)2012,JPO&INPIT |
