Novel motor drive control method of electric forklift

Abstract

The invention provides a novel motor drive control method of an electric forklift. According to the technical scheme, a protective control strategy is designed for steering motion of the forklift in ahigh-speed state. Specifically, the method comprises the following steps that firstly, the approximate corresponding relationship between the weight of goods and the height of the center of gravity of the goods is manually input by combining the proportion of the goods, and then a servicing center-of-gravity position is calculated on the basis of he relationship; then the output power of a steering motor is limited according to the servicing center-of-gravity position and the servicing total momentum; on the basis, when the current steering angle is too large, a walking motor is used for assisting in braking; when the auxiliary braking power is insufficient, the steering motor is forced to correct the steering direction, a lifting motor lowers the whole gravity center, and meanwhile a built-in balancing weight is made to move reversely to play a stabilizing role. Based on the principle, when the forklift steers at a high speed, a forklift body can be stabilized, and the rollover riskis avoided. In addition, when the forklift is driven into a slope, the position of the gravity center can be corrected through the balancing weight, and the stability of the forklift on the slope is improved.

Description

technical field

[0001] The invention relates to the technical field of motor control, in particular to a motor drive control method for a novel electric forklift. Background technique

[0002] Motor control technology refers to a systematic method for reasonably controlling the motor's starting, accelerating, running, decelerating, and stopping operating states. Motor control has different requirements and purposes according to the type of motor and the application occasion of the motor. For the motor, through the motor control, the purpose of fast start, fast response, high efficiency, high torque output and high overload capacity of the motor can be achieved.

[0003] Forklift is a common logistics equipment, which refers to various wheeled handling vehicles for loading and unloading, stacking and short-distance transportation of palletized goods. The forklift includes a travel motor control system used to control the travel of the forklift. The travel motor control syst...

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