Study on Manufacturing System with Open Architecture and Distributed Intelligent Modules

1.提出了一种设计意图的描述模型，该模型有助于减少设计人员之间的交流。设计者的意图被描述为使用所需功能、约束条件、技术信息、内涵任务和几何信息的关联。所需功能用树形结构表示，以显示设计者考虑的顺序。最低的功能被分配给根据内涵分配从几何信息中选择的功能元素。此外，结合条件和技术信息与功能元件有关。在重新设计过程中，验证了设计师意图模型的有效使用。提出了一种瘦对象操作的表示方法。首先，将二维空间中薄物体与环境表面之间的接触状态定性地表示为有限接触模式。其次，触点p…定义了更多不同的过渡。细对象操纵可以表示为一个网络，其节点表示接触图案，其弧线表示图案转变。最后，基于该表示方法开发了操作过程生成系统。算例表明，本文提出的方法对操作规划或任务策略的推导具有一定的参考价值。为实现自治的分布式制造系统，提出了一种基于主动数据库的动态调度体系结构。该系统结合了集中式调度算法和分布式信息处理的思想，分别实现了制造系统的高效性和灵活性。在该系统中，主动数据库是作为数据管理器的核心模块。自主加工单元接收来自活动数据库的加工命令，并发送加工状态。当发生机床故障和作业增加等事件时，执行动态调度，将加工订单发送到活动数据库。为了验证该系统的性能，开发了系统仿真器。较少

1. A description model of designers' intention that might be helpful to reduce the troublesome communications among designers was proposed. The designers' intention was described as the correlation using required functions, binding conditions, technical information, connotational assignments and geometric information. Required functions were represented by a tree structure to show the sequence of designers' consideration. The lowest function was assigned to functional elements that are selected from geometric information according to connotational assignments. Additionally, binding conditions and technical information were related to functional elements. The effective usage of designers' intention model was verified under the redesign process.2. A representation of thin object manipulation was proposed. First, the contact state between a thin object and (environmental surfaces in the two-dimensional space was represented qualitatively as finite contact patterns. Secondly, the contact p … More attern transition was defined. Thin object manipulation can be represented as a network whose nodes mean contact patterns and whose arcs mean pattern transitions. Finally, manipulation process generation system was developed based on this representation method. Some examples showed that our proposed method will be useful for manipulation planning or derivation of task strategies.3. An architecture of dynamic scheduling using active database was proposed to realize an autonomous distributed manufacturing system. The proposed system employed both of the centralized scheduling algorithm and the distributed information processing concept to achieve efficiency and flexibility of manufacturing systems, respectively. In the system, the active database was a core module acting as a data manager. Autonomous machining cells received machining orders from the active database, and sent machining status as well. Dynamic scheduling was performed to send machining orders to the active database when the events such as a machine trouble and a job addition happened. The system simulator was developed to verify the performance of the proposed system. Less