基于响应面法的电磁阀响应时间优化

发布时间：2018-05-19 15:59

本文选题：阀 + 优化　；参考：《农业工程学报》2016年09期

【摘要】：为了缩短喷雾植保用电磁阀的响应时间,提高变量喷雾的精准性,该文引入响应面法优化改进型脉冲宽度调制(pulse width modulation,PWM)控制参数。试验采用Box-Behnken设计方法,选取电磁阀驱动电压(10、12和14 V)、PWM延迟时间(15、40和65 ms)及PWM占空比(5%,15%和25%)作为考察因素,以电磁阀开启响应时间、电磁阀闭合响应时间和电磁阀响应时间为响应值,获取了关于3个响应值的二次多项回归模型,并对其进行了验证。经响应面法分析得出,在参数优化区间内,使电磁阀响应时间最短的参数条件为电磁阀驱动电压12 V、PWM延迟时间15 ms以及PWM占空比5%,与试验测量结果差异极小。与普通PWM控制方式相比,使用改进型PWM控制信号并优化控制参数可有效缩短电磁阀响应时间。该研究为合理选择PWM控制参数提供了参考。
[Abstract]:In order to shorten the response time of solenoid valve for spray plant protection and improve the accuracy of variable spray, the response surface method is introduced to optimize the control parameters of the modified pulse width modulation. The test adopts Box-Behnken design method, selects the electromagnetic valve drive voltage 10 ~ 12 and 14 V ~ + PWM delay time of 1540 and 65 Ms) and the PWM duty cycle ratio 5% and 25%) as the investigation factor, and takes the solenoid valve opening response time. The closed response time of solenoid valve and the response time of solenoid valve are the response values. A quadratic multiple regression model for three response values is obtained and verified. Through the analysis of response surface method, it is concluded that the parameter conditions for the shortest response time of the solenoid valve in the parameter optimization range are the driving voltage of the solenoid valve 12 V PWM delay time 15 Ms and the PWM duty cycle 5 Ms. The difference from the test results is very small. Compared with conventional PWM control mode, the response time of solenoid valve can be effectively shortened by using improved PWM control signal and optimizing control parameters. This study provides a reference for the reasonable selection of PWM control parameters.
【作者单位】：浙江大学生物系统工程与食品科学学院;
【基金】：国家高技术研究发展计划(863计划)(2012AA10A504) 农业部引进国际先进农业科学技术(2011-G32) 浙江省“新世纪151人才工程”
【分类号】：TH134

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