棉花打顶机自动测距控制系统的设计

Design of Automatic Ranging Control System of Cotton Topping Machine

针对棉花打顶农艺的要求和棉花打顶试验装置切割器响应时机不合适等问题,在超声波测高棉花打顶装置的基础上,设计出一种基于MC9S12XS128单片机的自动测距控制系统。利用轴向固定于行走轮上的增量式编码器测量脉冲数,根据正向脉冲计算打顶试验装置的前进距离控制切割器调整高度。同时,设计出可调响应距离的控制程序,以及结合棉花种植农艺设计出最佳的行走轮直径。该控制系统能有效解决能耗大、控制电机损耗严重等问题,提高打顶效率,打顶效果更好,可靠性更高。

According to the agronomic requirements of cotton topping and the test apparatus topping cutter inappropriate response timing and other issues, and based on ultrasofiic altimeter cotton topping device, a kind of automatic range control system based on MC9S12XS128 was designed. Using the axial fixed to walking wheel incremental encoder to measure the pulse number, according to the positive pulse calculate forward distance of topping experiment device controlling cutter height adjustment. Meanwhile, a tunable response control program of distance was designed, as well as the best agronomic walking wheel diameter combined with cotton planting agronomic. The control system can effectively solve the problem of high energy consumption, serious loss of motor control, improve the efficiency of topping, the effect is better, reliability is higher.