| 摘要 |
<p>A multiposition controller includes a first switching element (1, 4) for switching on and off in accordance with movement between positions of an object (2) to be controlled, and a second switching element (6, 7) for detecting the required direction of movement of the object. The second switching element (6, 7) switches off when the object is positioned at one side from an initial position (c) of the object, while it switches on when the object is positioned at the other side from the initial position of the object. Further, the second switching element remains off or on when the object is positioned at the initial position.</p><p>Switching signals from the first switching element (1,4) arising from movement of the object (2) are counted in a controlling circuit (5), either up or down depending on the direction of movement as provided by pulse signals fed to a motor drive circuit (8).</p><p>By such a simple structure, accurate position controlling can be achieved.</p> |
