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Novel motor drive control method of electric forklift

A technology of motor drive control and electric forklift, which is applied in the direction of hoisting device, lifting equipment safety device, etc. It can solve the problems that the stability of forklift truck body needs to be improved, so as to realize the stability of the truck body, avoid the risk of rollover, and improve the stability sexual effect

Active Publication Date: 2021-01-29
ZIBO GREEN ELECTRONICS TECH
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  • Summary
  • 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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  • Novel motor drive control method of electric forklift

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Effect test

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 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...

Claims

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Application Information

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Patent Type & Authority Applications(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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