概念设计中六点定位原理的控制论表达

Cybernetic expression of six point location principle in conceptual design

为了解决概念设计中工件定位的功能建模、结构表达和设计推理问题,在六点定位原理的基础上,结合控制论,建立了工件的定位模型,将工件的定位分解为质心位置定位、表面集朝向定位和工件形状的定位,提出了约束度、定位度和未定度的概念,建立并分析了六点定位原理的功能模型、控制模型和设计过程模型,归纳了定位设计的5个原则,提出了用虚拟刚体作为媒介的设计方法,将六点定位原理扩展到支持非刚体工件的定位,用未定度驱动的定位系统进化指导面向定位的结构设计.最后以电动打蛋器的设计为例,验证了该方法的可行性.

In order to solve the problems of functional modeling,structural expression and design reasoning of workpiece location in conceptual design,based on six point location principle,combined with cybernetics,the location model of workpiece is established,and the location of workpiece is divided into barycenter position location,surface set orientation location,and workpiece shape location,the concepts of constraint degree,location degree and dislocation degree are put forward,the function model,control model and design process model of six point location principle are established and analyzed,five principles of location design are summarized,the design method using virtual rigid body as intermediary is proposed,the six point location principle is extended to support the location of non-rigid workpiece,location system evolution that driven by dislocation degree are used for guiding location oriented structural design.Finally,the feasibility of the method is proved through the example of electric eggbeater design.