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Control method for engineering machinery hydraulic system, controller and storage medium

A technology for hydraulic systems and construction machinery, which is applied to fluid pressure actuation system components, mechanical equipment, fluid pressure actuation devices, etc., and can solve problems such as insensitive response to micro-operations

Active Publication Date: 2020-09-18
SHANGHAI ZOOMLION HEAVY IND PILING MACHINERYCO
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Problems solved by technology

[0003] The purpose of the embodiment of the present invention is to provide a control method for the hydraulic system of construction machinery, which solves the problem of insensitive micro-operation response of electronically controlled pilot equipment, satisfies the realization of low-speed and stable operation of the equipment, and improves the comfort of equipment operation Spend

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  • Control method for engineering machinery hydraulic system, controller and storage medium
  • Control method for engineering machinery hydraulic system, controller and storage medium
  • Control method for engineering machinery hydraulic system, controller and storage medium

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Embodiment Construction

[0026] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention.

[0027] At present, the fine control of the electric control pilot model on the market is still in its infancy. When the electric control handle is controlled for small operations, the equipment has the problem of insensitive micro-operation response, which makes the device unable to achieve low-speed stability according to the micro-operation of the electric control handle. run.

[0028] In order to solve the above problems, the embodiment of the present invention provides a control method for the hydraulic system of construction machinery. The method performs compound control of ...

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Abstract

The embodiment of the invention provides a control method for an engineering machinery hydraulic system, a controller and a storage medium, and belongs to the field of engineering machinery. The control method for the engineering machinery hydraulic system comprises the steps that the operation amplitude of an electric control handle is obtained; whether the operation amplitude of the electric control handle is in a handle preparation area or not is judged; and under the condition that the operation amplitude of the electric control handle is located in the handle preparation area, a hydraulicpump is controlled to be located in a hydraulic pump standby area, a hydraulic valve is controlled to be located in a hydraulic valve effective area, the hydraulic pump keeps the preset smallest displacement in the hydraulic pump standby area along with the change of the operation amplitude of the electric control handle from an initial value of the handle preparation area to a final value of thehandle preparation area, and the valve element opening diameter of the hydraulic valve rises from zero to the preset minimum effective opening diameter in the hydraulic valve effective area. According to the control method for the engineering machinery hydraulic system, the controller and the storage medium, staged composite control is carried out according to the actual operation amplitude of the electric control handle, and it is guaranteed that equipment has good micro-motion performance during micro-motion.

Description

technical field [0001] The invention relates to the field of construction machinery, and in particular to a control method, controller and storage medium for hydraulic systems of construction machinery. Background technique [0002] Most of the traditional construction machinery equipment is the hydraulic control pilot type, the hydraulic control pilot type has the advantages of strong driving force and can realize fine operation; while the electric control pilot type has the advantages of flexible operation compared with the hydraulic control pilot type Convenience, low equipment cost, clean and environmentally friendly, but the fine control of the electronically controlled pilot model is still in its infancy, and the use of the electronically controlled pilot model will have the problem of insensitive micro-operation response, which makes it difficult to realize the slow movement of the equipment Or slow motion erratic. Contents of the invention [0003] The purpose of ...

Claims

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Application Information

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IPC IPC(8): F15B21/08F15B21/00
CPCF15B21/087F15B21/001F15B2211/255F15B2211/426
Inventor 何欢赵亮黎伟福崔楷华李枭
Owner SHANGHAI ZOOMLION HEAVY IND PILING MACHINERYCO
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