平衡系数对电梯安全的影响及测试方法优化

Impact of balance coefficient on lift safety and its measurement method optimization

为减少人为因素影响,提高电梯平衡系数的测试精度,预防由此引发的安全事故,建立一种优化测试方法。通过分析平衡系数对电梯安全的影响,研究电梯空载下行和重载上行过程中的电流特性及电梯力学运行特性,建立平衡系数测试优化模型。该模型以电流法为基础,将电梯运行全程电流平均值作为输入点来确定平衡系数。电流平均值的计算时段从出现最大电流开始,至电流稳定在待机状态时止。结果表明,用此方法能克服无法准确读取电流值及确定轿厢位置的缺陷。优化前后数据对比结果表明,平衡系数精度由95%提高到了99.5%。

In order to improve the test accuracy of elevator balance coefficient and reduce the impact of human factors,an optimized measurement method was worked out. The impact of balance coefficient on elevator safety was analyzed. Current characteristics and mechanics operating characteristics of a given elevator during heavy-duty going up process and no-load going down process were researched. A balance coefficient optimization model was built. It takes the current average as input to calculate the balance coefficient based on current law. The duration of time,which is required for taking current values that are necessary for calculating the current average,begins at the point when the maximum current value appears,and ends at the point when the current value begins to stabilize at a waiting level. The problems of current reading and car location were solved with this model. The results show that the accuracy of balance coefficient is improved from 95% to 99. 5%.