介绍了并联机构动平台的六自由度位姿检测机构的组成结构和工作原理;介绍了光栅尺测量系统,对其误差来源进行了分析,对主要零部件的设计进行了优化以保证其测量精度;采用牛顿迭代法解算并联机构的运动学正解,通过实验验证了其测量精度的可靠性和实时性.

For the cable harness wiring difficult problem of complex mechatronic products, a three dimensional space-wiring technology for cable harness based on multi-scale chaotic mutation particle swarm optimization algorithm is proposed. Firstly, the influence of cable harness wiring sequence on connecting result is analyzed, and the algorithm solve space is defined by abstract modeling of three dimensional wiring space environment. To realize the local solution escape of path optimization, the idea of chaotic mutation is introduced in the particle swarm optimization algorithm. To solve the problem of single mutation scale does not guarantee to obtain the optimal solution, and improve the overall and precise local optimization algorithm performance, the competitive mechanism among different mutation scales is used to make the whole population to search the solution space distributed. Finally, four kinds of standard Benchmark testing functions are chosen to test the proposed algorithm, and the proposed method is validated by using the algorithm in the process of cable harness wiring for a certain phased array radar.

In view of the cable harness wiring quality of complex mechatronic products was affected by multiple factors and was difficult to get more control problems,a quality control and fuzzy comprehensive evaluation method of cable harness wiring was proposed.Based on influencing factors composition and analysis of cable harness wiring quality,the overall flow of wiring quality control and evaluation was established,and specific control measures were also given.Based on the main factor indicators of influencing the cable harness quality,membership matrixes were established through the expert scoring method and dimensionless processing of results.Meanwhile,combined with the single factor and comprehensive fuzzy weight vector determined by entropy weight method and Analytic Hierarchy Process (AHP) respectively,the quality grade evaluation of cable harness wiring based on fuzzy comprehensive evaluation method was realized.The feasibility and validity of the proposed method were verified by analysis results on the quality grade evaluation of cable harness wiring for a certain phased array radar.

The spatial pose and shape of flexible cable harness are easy to change during the wiring in complex mechatronic products,thus lead to inaccuracy of the sampling information of cable harness in the process of wiring,and seriously affect the efficiency of wiring.This paper proposes a physical characteristics modeling and deformation simulation method for flexible cable harness based on exact Cosserat model.First,for the large deformation characteristics of cable harness,we build an activity frame and a parameterized model of cable harness,and analyze the spatial evolutionary process.Secondly,we describe the spatial pose and shape of cable harness,and establish a physical characteristics model of cable harness based on exact Cosserat model by comprehensive consideration of the cable harness geometry and physical properties,and then construct the dynamic equilibrium equations of flexible cable harness.Finally,to simulate the deformation process in the process of wiring,we solve the physical characteristics model by using the numerical integration solution method.In this paper,we design and develop a corresponding prototype system of flexible cable harness wiring/simulation,and verify the proposed method by a specific case.

Cable harness wiring and installation were the universal problems in the design of com-plex mechatronic products.The wiring quality of cable harness became an important indicator to measure the product performance and reliability.Firstly,the connotation and main research contents of cable harness virtual assembly were introduced herein.Then the key technologies and its character-istics involved to cable harness virtual assembly were analyzed especially,and a comparative analysis of research status at home and abroad was also given.The existing problems and future development trends were also presented and analyzed.Finally,the applications of augmented reality in the field of cable harness assembly were discussed.

To improve universality and reusability of Automatic Test Systems(ATSs),this paper introduced a set of unified component interfaces to encapsulate components in Test Program Set(TPS) and instrument Application Programmable Interfaces(APIs),defined a unified data model applied on such interfaces for data exchange purpose.Object-Oriented Analysis and Design(OOAD) is applied to loosen coupling between software components and instruments in ATSs.Universality and expandability of ATSs are considered meanwhile.This design achieved good results in engineering practice,and can be used for reference in future ATSs development.

The data acquisition system for environment simulation experiment based on LabVIEW 8.5 is elaborated,whose operation features a user interface that one can switch between a table view and a tab control view.The model used in the data transmission between data acquisition and data processing is producer/consumer of LabVIEW.The system using Microsoft access database can automatically save collected data of each test,alarm information,user operation log and error log,etc.Wave format array is used in data transmission.The results show that the system achieves desired results and applies well.