| 摘要 |
<p>Control apparatus is disclosed herein which includes means for sensing the condition of a variable and providing an actual condition signal in which the signal has a time duration related in magnitude to the actual condition of the variable. Means responsive to the sensing means generates a reference signal which is initiated at the same time as the actual condition signal, the reference signal having a time duration related in magnitude to a desired condition for the variable. A first logic circuit includes means for providing a complementary signal of the reference signal and further provides a first output signal in response to a coincidence of the actual condition signal and the reference complementary signal to indicate a deviation of the variable in a first direction from the desired condition for the variable. A second logic circuit means includes means for providing a complementary signal of the actual condition signal and further provides a second output signal in response to a coincidence of the reference signal and the complementary actual condition signal to indicate a deviation of the variable in a second direction from the desired condition for the variable.</p> |
