In order to deal with the complex process that incurs serious time delay, enormous inertia and nonlinear problems, fuzzy simulation human intelligent control algorithm rules are established. The fuzzy simulation human...In order to deal with the complex process that incurs serious time delay, enormous inertia and nonlinear problems, fuzzy simulation human intelligent control algorithm rules are established. The fuzzy simulation human intelligent controller and the hardware with the single-chip microcomputer are designed and the anti-interference measures to the whole system are provided.展开更多
针对地轮驱动的玉米排种工作方式存在地轮打滑而造成漏播率增加的问题,设计了基于无刷直流电机驱动(Brushless Direct Current Motor,BLDCM)的智能播种控制系统。该系统以STM32单片机作为PID控制器的核心处理器,利用无刷直流电机作为排...针对地轮驱动的玉米排种工作方式存在地轮打滑而造成漏播率增加的问题,设计了基于无刷直流电机驱动(Brushless Direct Current Motor,BLDCM)的智能播种控制系统。该系统以STM32单片机作为PID控制器的核心处理器,利用无刷直流电机作为排种器驱动源,并通过增量式编码器实时采集排种器的转速,同时利用霍尔传感器获取播种作业速度。为实现PID控制的最优化,在Simulink环境下建立无刷直流电机的仿真模型,并结合PSO(Particle Swarm Optimization,粒子群优化)算法对PID参数进行优化设计。仿真结果表明:经PSO整定后,PID控制器的阶跃响应效果良好,超调量为4%,调节时间为0.12s。田间试验结果表明:在低速、中速、高速和变速作业条件下,本电机驱动系统较传统地轮驱动系统在漏播指数方面分别降低了0.9%、1.1%、1.4%和1.3%,在播种合格指数方面分别提高了1.8%、3.8%、2.8%和1.7%。展开更多
文摘In order to deal with the complex process that incurs serious time delay, enormous inertia and nonlinear problems, fuzzy simulation human intelligent control algorithm rules are established. The fuzzy simulation human intelligent controller and the hardware with the single-chip microcomputer are designed and the anti-interference measures to the whole system are provided.
文摘针对地轮驱动的玉米排种工作方式存在地轮打滑而造成漏播率增加的问题,设计了基于无刷直流电机驱动(Brushless Direct Current Motor,BLDCM)的智能播种控制系统。该系统以STM32单片机作为PID控制器的核心处理器,利用无刷直流电机作为排种器驱动源,并通过增量式编码器实时采集排种器的转速,同时利用霍尔传感器获取播种作业速度。为实现PID控制的最优化,在Simulink环境下建立无刷直流电机的仿真模型,并结合PSO(Particle Swarm Optimization,粒子群优化)算法对PID参数进行优化设计。仿真结果表明:经PSO整定后,PID控制器的阶跃响应效果良好,超调量为4%,调节时间为0.12s。田间试验结果表明:在低速、中速、高速和变速作业条件下,本电机驱动系统较传统地轮驱动系统在漏播指数方面分别降低了0.9%、1.1%、1.4%和1.3%,在播种合格指数方面分别提高了1.8%、3.8%、2.8%和1.7%。