A new motor drive control method for electric forklift

Abstract

The invention provides a motor drive control method of a novel electric forklift. This technical solution designs a protective control strategy for the steering movement of the forklift at high speed. Specifically, the present invention first combines the specific gravity of the goods, and artificially inputs the roughly corresponding relationship between the weight of the goods and the height of the center of gravity of the goods, based on which, the position of the center of gravity of the curb is calculated; and then the output power of the steering motor is limited by the position of the center of gravity of the curb and the total momentum of the curb ; On this basis, when the current steering angle is too large, the walking motor is used to assist braking; when the auxiliary braking power is insufficient, the steering motor is forced to correct the steering direction, the lifting motor lowers the center of gravity, and the built-in counterweight is used Reverse movement, play a stabilizing role. Based on the above principles, when the forklift turns at a higher speed, it can realize the stability of the vehicle body and avoid the risk of rollover. In addition, the present invention can also use counterweights to correct the position of the center of gravity when the forklift drives into the slope, so as to improve its stability on the slope.

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...

Images