大中型喷灌机组一般都可以调节降水量,以适应不同生长期和不同作物的灌溉需要。在一定的喷头组合下,它是通过改变机组的平均运行速度来实现的。一台大中型喷灌机组由若干个塔架组成,每一个塔架都有一套驱动装置,其中包括一个驱动电机和一个变速机构。如果通过改变每一个塔架驱动电机的转速或改变变速机构的传动比来实现整个机组的调速,则势必需要一套复杂的操纵控制系统才能实现。例 Large and medium-sized sprinkler units can generally regulate precipitation, to adapt to different growing periods and different crop irrigation needs. In a certain nozzle combination, it is by changing the average unit speed to achieve. A large and medium-sized sprinkler unit consists of several towers, each with a set of drives, including a drive motor and a speed change mechanism. If you change the speed of each tower drive motor or change the transmission gear ratio to achieve the entire unit speed, it will certainly need a complex set of maneuver control system can be achieved. example