液压挖掘机节能用油门模糊控制器的开发研究

从液压挖掘机节能角度出发,提出了实现挖掘机节能的理论和控制方法。根据实际工作中不同的作业对象和工作要求,将挖掘机分为四个动力模式,分别对应不同的发动机转速。为使发动机转速控制在规定的低油耗区范围内工作,在油门控制中采用了模糊控制方法。根据挖掘机外部负载改变而引起的发动机转速变化情况,由模糊控制器实时控制步进电机实现对发动机油门的精确控制,从而达到节能的目的,并基于此方法进行了挖掘机节能控制台架试验,试验结果验证了控制理论和方法能够实现对油门的精确控制,是可行的。

Study of the accelerograph fuzzy controller of hydraulic excavator saving energy

From the point of view of saving energy of hydraulic excavator, a new theory and control method has been successfully developed: according to different working objects and demands, the power mode of the machine is divided into four statuses with different engine revolve speed. Fuzzy control method is used in order to make the engine revolve speed in the allowable arrange. The engine accelerograph is precisely controlled by the step electromotor with the fuzzy controller according to the changing speed of the engine and saving energy is realized. On the basis of new method and theory, energy saving experiment is processed and the results show that the control method and theory is feasible.