A new motor drive control method for electric forklift

A motor drive control, electric forklift technology, applied in the direction of lifting equipment safety device, lifting device, etc., can solve the problem of forklift body stability to be improved, achieve the stability of the body, avoid the risk of rollover, and improve the stability sexual effect

Active Publication Date: 2022-03-22
ZIBO GREEN ELECTRONICS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new motor drive control method for electric forklifts aimed at the technical defects of the prior art, so as to solve the technical problem that the stability of the forklift body needs to be improved under the conventional control method

Method used

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  • A new motor drive control method for electric forklift

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Embodiment 1

[0024] A novel motor drive control method for an electric forklift. The electric forklift includes a traveling motor, a lifting motor, and a steering motor. A sliding platform with two degrees of freedom is built into the chassis of the electric forklift, and a sliding platform is carried on the sliding platform. counterweight; such as figure 1 As shown, the method includes:

[0025] S100: preset the corresponding relationship between the weight of the load and the height of the center of gravity of the load, collect the current load of the forklift, calculate the current height of the center of gravity of the load, collect the current height of the arm of the forklift, and superimpose the height of the center of gravity of the current load to obtain the current The position of the center of gravity of the load is calculated according to the current load, the position of the center of gravity of the current load, the vehicle's own weight, and the position of the center of grav...

Embodiment 2

[0032] A novel motor drive control method for an electric forklift. The electric forklift includes a traveling motor, a lifting motor, and a steering motor. A sliding platform with two degrees of freedom is built into the chassis of the electric forklift, and a sliding platform is carried on the sliding platform. a counterweight; the method comprising:

[0033] Preset the corresponding relationship between the weight of the load and the height of the center of gravity of the load, collect the current load of the forklift, calculate the current height of the center of gravity of the load, collect the current height of the forklift arm, and superimpose the height of the center of gravity of the current load to obtain the current load The position of the center of gravity is calculated according to the current load, the position of the center of gravity of the current load, the self-weight of the vehicle, and the position of the center of gravity when the vehicle is empty;

[003...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66F9/06B66F9/075B66F9/24B66F17/00
CPCB66F9/06B66F9/075B66F9/07554B66F9/07568B66F9/0755B66F9/24B66F17/003
Inventor 张玉璘徐志峰张鹏飞
Owner ZIBO GREEN ELECTRONICS TECH
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