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基于LoRa无线传感网络的农业温室大棚环境测控系统设计
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作者 王楠 《计算机测量与控制》 2024年第8期100-107,共8页
温室大棚是种植反季农作物的重要设施,棚内环境参数直接决定了农作物的生产质量和数量;然而,现有的测控系统由于受天气条件等因素的影响,导致环境温湿度测试存在一定的误差;为了满足农作物的生长需求,并提高精确度,提出了基于LoRa无线... 温室大棚是种植反季农作物的重要设施,棚内环境参数直接决定了农作物的生产质量和数量;然而,现有的测控系统由于受天气条件等因素的影响,导致环境温湿度测试存在一定的误差;为了满足农作物的生长需求,并提高精确度,提出了基于LoRa无线传感网络的农业温室大棚环境测控系统的优化设计;通过改装传感器设备和调整数据处理器和控制器的内部结构,构建了系统数据库并组建了LoRa无线传感网络,实现了实时采集大棚环境数据和传输到系统终端;通过计算调整控制量,实现了对农业温室大棚环境的测控功能;实验结果显示,与传统测控系统相比,优化设计的系统在环境温湿度测试方面的误差显著降低了,分别降低了3.65℃和3.75%。 展开更多
关键词 LoRa无线传感网络 农业温室大棚 环境测控系统 环境数据采集 调整控制量
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Genetic algorithm tuned PI controller on PMSM simplified vector control 被引量:11
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作者 WIBOWO Wahyu Kunto JEONG Seok-kwon 《Journal of Central South University》 SCIE EI CAS 2013年第11期3042-3048,共7页
A simple control structure in servo system is occasionally needed for simple industrial application which precise and high control performance is not exessively important so that the cost production can be reduced eff... A simple control structure in servo system is occasionally needed for simple industrial application which precise and high control performance is not exessively important so that the cost production can be reduced efficiently. Simplified vector control, which has simple control structure, is utilized as the permanent magnet synchronous motor control algorithm and genetic algorithm is used to tune three PI controllers used in simplified vector control. The control performance is obtained from simulation and investigated to verify the feasibility of the algorithm to be applied in the real application. Simulation results show that the speed and torque responses of the system in both continuous time and discrete time can achieve good performances. Furthermore, simplified vector control combined with genetic algorithm has a similar perfofmance with conventional field oriented control algorithm and possible to be realized into the real simple application in the future. 展开更多
关键词 simplified vector control conventional field oriented control permanent magnet synchronous motor genetic algorithm PI controller
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