Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A Reliability Modeling and Evaluation Method for Dynamic Cascaded Coupled Electromechanical Systems

An electromechanical system, dynamic cascading technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as performance degradation, fault evolution and emergence, and lack of physical background integration.

Active Publication Date: 2017-07-07
BEIJING INST OF SPACECRAFT SYST ENG
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods are all based on the idea of ​​event occurrence probability statistics, the use of deterministic information is insufficient, and the combination with the physical background is not close
At present, the research on the reliability modeling and analysis methods of complex electromechanical systems still lacks the support of a mature theoretical system. What is more serious is that certain functional mutations, performance degradation, fault evolution and emergence of complex electromechanical systems are difficult to solve in reliability modeling. Perform accurate analytical expressions with the analysis process

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
  • A Reliability Modeling and Evaluation Method for Dynamic Cascaded Coupled Electromechanical Systems
  • A Reliability Modeling and Evaluation Method for Dynamic Cascaded Coupled Electromechanical Systems
  • A Reliability Modeling and Evaluation Method for Dynamic Cascaded Coupled Electromechanical Systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0128] Task description: Reliability issues of dynamic cascade coupling of dual-axis drive mechanism

[0129] The dual-axis driving mechanism of satellite antenna is a typical electromechanical system in space agencies, and its reliability level is directly related to the safety of satellite antenna and the reliability of task completion. The dual-axis drive mechanism is the core component of the dual-axis movement of the antenna, including the horizontal axis drive assembly and the vertical axis drive assembly, and the two drive assemblies are completely consistent.

[0130] In the "Dynamic Cascade Coupling Reliability" problem of the dual-axis drive mechanism: the dynamic characteristics (torque and speed) of each component, subsystem and system, and the clearance of the kinematic pair change with time; the system response (displacement and angle of the antenna) is determined by The composition of the dynamic response of internal components (input shaft, rigid-flex wheel, ou...

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 provides a method for reliability modeling and evaluation of a dynamic cascade coupling electromechanical system. The method is based on a physical background of a complex electromechanical system and is capable of carrying out research on reliability of the electromechanical system based on a dynamics response model, and an established reliability network model of the electromechanical system is capable of more accurately describing the characteristics of dynamic, cascading and coupling of the complex electromechanical system, so that reliability of the electromechanical system, which is obtained based on the network model, is more accurate and credible; meanwhile, by utilizing a method of combining dynamics analysis and uncertainty analysis, transfer of uncertain information from a bottom layer to a top layer of the network model is described, and the difficulties that an aerospace mechanism system has a response uncertainty character and system reliability information cannot be obtained through experiment measures due to large experimental expenses, long period, large technical difficulty and expensive product cost are solved.

Description

technical field [0001] The invention belongs to the technical field of reliability, and in particular relates to a reliability modeling and evaluation method of a dynamic cascade coupling electromechanical system. Background technique [0002] Most complex electromechanical systems operate in a complex service environment, the system behavior is closely related to the physical background, the performance of the system gradually deteriorates during service, and the damage of parts and components continues to develop under the continuous action of environmental loads, showing time-varying and polymorphic characteristics; the internal level of the system Complex, with the characteristics of upper and lower cascading between layers, and mutual coupling between units and factors in a layer; system faults present multiple fault mechanisms, multiple fault modes interact and compete, and the interaction and competition relationship presents Dynamically changing features. The dynami...

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 Patents(China)
IPC IPC(8): G06F17/50
Inventor 谭春林张建国刘育强王丕东阚琳洁张慧博
Owner BEIJING INST OF SPACECRAFT SYST ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products