| 摘要 |
PURPOSE:To perform a start control with good boarding comfort to ride by providing a means, which generates an elevator start controlling balance signal through addition of bias value in accordance with an output of a balance device, at the time of no load in cage to the output of the balance device at the time of in-cage no load, in a microcomputer system. CONSTITUTION:In a step 41, when an output VWO of a differential transformer at the time of in-cage no load is increased larger by not loss than a predetermined value alphathan a bias value bn (value for decreasing a balance signal at the time of in-cage no load to zero) at that time, the bias value bn is updated. Thus, the balance signal W at the time of in-cage no load is always set to almost zero. In an arithmetic expression in a step 44, VW is an output of the differential transformer at the time of in-cage no load, and function f(bn) is a correcting function for obtaining a change rate of the balance signal W for the load in a fixed value even when the deflection of vibro- isolating rubber is changed in aged deterioration. Accordingly, when the balance signal W is calculated by the arithmetic expression in the step 44, the change rate of the balance signal W in relation to a change of in-cage load is also made a fixed value, and the accurate balance signal W is always obtained from in-cage no load to the rated load, as a result, generation of a start shock is eliminated. |
