Hydraulic excavator power adaptive control system and method

A self-adaptive control and hydraulic excavator technology, which is applied to earth movers/excavators, construction, etc., to achieve the effect of improving economy and reducing fuel consumption

Inactive Publication Date: 2014-10-01
HUNAN MECHANICAL & ELECTRICAL POLYTECHNIC
View PDF4 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The difficulty lies in the online calculation of the external load power demand and the dynamic adjustment method of the throttle opening

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hydraulic excavator power adaptive control system and method
  • Hydraulic excavator power adaptive control system and method
  • Hydraulic excavator power adaptive control system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] The technical scheme of the present invention will be further described below through specific embodiments:

[0050] The control mode of the present invention is as figure 1 As shown, the load calculator module collects the main system pressure and pilot system pressure signals. The main pump pressure reflects the firmness of the soil, and the pilot pressure reflects the operator's speed expectation. The combination of the two can represent the power demand of the load. Through The main system pressure and pilot system pressure signals are processed and calculated in real time to obtain the calculated value of the load demand. The control block diagram of the load calculator is as follows figure 2 shown;

[0051] The fuzzy throttle controller receives the calculation result of the load calculator and fuzzifies it, and outputs the control amount of the throttle opening through fuzzy calculation and processing. The adaptive control of power system power is realized th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a hydraulic excavator power adaptive control system and method which aims at achieving dynamic real-time matching of engine power output and the external load power requirement of an excavator under the variable load condition. The method includes collecting a main pump pressure signal and a pilot pressure signal, conducting online calculation on bucket resistance and the expectation of a user on bucket speed according to the pressure signals, further calculating the requirement of excavator working for real-time power, conducting discrete vague control on the position of an engine throttle according to the power requirement and the change trend of the power requirement to enable an engine to work nearby a preset power output point and meanwhile conducting online adjustment on state parameters of a power system to enable power output of a power unit to conduct matching control on external load. By means of the system and method, the economy of an excavator is improved under the premise that the power of the excavator is ensured, dynamic real-time matching between the engine power output and the external load power requirement of the excavator is achieved under the variable load condition, and the fuel consumption rate of unit earth volume is effectively reduced.

Description

technical field [0001] The technology belongs to the field of hydraulic excavator control, and in particular relates to a hydraulic excavator power self-adaptive control system and method. Background technique [0002] During the working process of the excavator, the external load changes very sharply and frequently, resulting in a sharp change in the pressure of the hydraulic system. In order to ensure the power performance of the excavator, the traditional power matching method realizes the dynamic power matching between the pump and the engine, but Failure to follow the power fluctuation of the external load in time will result in wasted engine power or insufficient fuel combustion, resulting in unsatisfactory energy-saving effects. [0003] The matching relationship between engine power and external load is reflected in the following two aspects: [0004] When the external load is greater than the limit power of the engine, the external load should adapt to the engine. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): E02F9/22
Inventor 韩慧仙曹显利
Owner HUNAN MECHANICAL & ELECTRICAL POLYTECHNIC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap