Speed control of fork lift vehicle using a genetic algorithm

In general, the electronic fork lift driven by a DC motor drive system is used in the industrial field. Classically, the DC motor is controlled by current or speed control using proportion control method, by output torque following the load on the plane like a manual operation. But in the industrial field, the electronic fork lift demands the robust drive mode. For some cases of the mode, there is a problem in torque and speed control following slope capacity. The control is sensitive concerning the slope angle and output speed. Various control methods have been studied for stability of speed control. In this paper, the author applies a speed controller for self-tuning using the genetic algorithm to obtain robust, stable speed control and uses stable, high efficiency DSP control as the main controller for high speed processor, embodying dynamic characteristics of control comparing the PI control to the fuzzy control.