In this paper, a mixed-model assembly system is modeled using ATPN (agent oriented timed Petri net) based on assembly resources classification. Firstly, the basic concepts and definition of ATPN is described. Secondly, with ATPN method introduced into mixed-model system research the modeling of a mixed-model assembly system is discussed. The development of an ATPN model for a MMAS consists of f...

This paper presents an agent-based approach to online assembly task allocation and scheduling for flexible assembly systems. We propose an anytimescheduling algorithm to handle dynamic changes during planning. This algorithm is the center of an agent-based architecture in which agents for scheduling, collision avoidance, task execution, and task monitoring collaborate to overcome unexpected exe...

The hierarchy of assembly components in a CAD assembly model is rarely a true representation of the sequence of assembly of these components during manufacturing. Thus, any assembly planning or evaluation software system needs to re-order and re-group the various components of the CAD assembly model to reflect the sequence of component assembly. Although all parametric CAD systems allow reorgan...

Multisectoral actions for health, defined as actions undertaken by non-health sectors to protect the health of the population, are essential in the context of inter-linkages between three dimensions of sustainable development: economic, social, and environmental. These multisectoral actions can address the social and economic factors that influence the health of a population at the local, natio...

We describe a cell-free system, derived from preblastoderm Drosophila embryos, for the efficient assembly of cloned DNA into chromatin. The chromatin assembly system utilizes endogenous core histones and assembly factors and yields long arrays of regularly spaced nucleosomes with a repeat length of 180 bp. The assembly system is also capable of complementary-strand DNA synthesis accompanied by ...

The flexibility of sheet metal assembly processes is one of the most critical issues in the design stage of assembly systems. Currently in the automotive industry, flexibility and adaptability of assembly systems are mainly considered as the capability to assemble a family of products. The notion of assembly system flexibility, as understood from the point of view of error compensation by upstr...

Automobile sector forms the backbone of manufacturing sector. Vehicle assembly line is important section in automobile plant where repetitive tasks are performed one after another at different workstations. In this thesis, a methodology is proposed to reduce cycle time and time loss due to important factors like equipment failure, shortage of inventory, absenteeism, set-up, material handling, r...

Cellular manufacturing meets the diversified production and quantity requirements flexibly. However, its efficiency mainly depends on the operators’ working performance. In order to improve its efficiency, an effective assembly-support system should be developed to assist operators during the assembly process. In this chapter, a multi-modal assembly-support system (MASS) was proposed, which aim...

In the first paper of this two-part series, the assembly variant design system architecture and complementary assembly methodology have been presented. The general complementary assembly models, hierarchical assembly model and relational assembly model, are established which were further specified as assembly variants model (AVM) and assembly mating graphs (AMG) respectively to cater for the ne...

An image recognition system for use in the assembly of microdevices is developed. The system gives an increase in the assembly process precision. A pin-to-hole insertion task was used to test developed system. The system will be used for assembly of microring-based filters. 2003 Elsevier B.V. All rights reserved.