With regards to methods of assembly systems planning we are familiar with the depiction of the technical structure using capacity fields and graphs in addition to the modelling of assembly activities as a precedence diagram. However, no form of presentation has yet been defined that describes the assignment of staff within an assembly system. This paper discusses the concept of the staff assign...

The ability of manipulating exible objects, such as rubber belts and paper sheets, is important in automated manufacturing systems. This paper describes a novel approach to assembly of exible objects. The operation dealt with in this paper is to assemble a rubber belt with xed pulleys. By analyzing possible states of the belt based on the empirical knowledge of the belt, we can derive a method ...

This paper presents a model based on pomsets (partially ordered multisets) for estimating the minimum number of setups in the workcells in Assembly Sequence Planning. This problem is focused through the minimization of the makespan (total assembly time) in a multirobot system. The planning model considers, apart from the durations and resources needed for the assembly tasks, the delays due to t...

This paper proposes a representation model of the quality state change in an assembly process that can be used in a computer-aided process design system. In order to formalize the state change of the manufacturing quality in the assembly process, the functions, operations, and quality changes in the assembly process are represented as a network model that can simulate discrete events. This pape...

A mixed-model assembly line is widely used nowadays in industry. Effectively applying mixed-model assembly can result in smooth part usage and balanced workloads on the assembly line. The problem of production planning in terms of scheduling various models on an assembly line over a time horizon is studied here. The problem assumes that each model has a given range of production days within the...

A common problem in robotic assembly is that of mating tightly fitting parts when the locations and the dimensions of the parts are somewhat uncertain. It is necessary to be able to reason about these uncertainties in conjunction with the geometry of the parts involved in order to develop motion plans for assembly operations. In this paper we will present a method for the treatment of three typ...

Each level of the hierarchical IC architecture may have several components; for example, the Execution Level has one real-time controller per work-cell agent. A supervisory controller in the Coordination Level may coordinate several agents to sequence the jobs needed for a given task. Each system must sense the current conditions, make decisions, and give commands or status reports to other sys...

The representations of assembly knowledge and assembly sequences are crucial in assembly planning, where the size of parts involved is a significant and often prohibitive difficulty. Zero-suppressed binary decision diagram (ZBDD) is an efficient form to represent and manipulate the sets of combination, and appears to give improved results for large-scale combinatorial optimization problems. In ...

Classical control systems utilize implicit analytical models and select inputs using numerical computation in order to achieve desired plant performance in real time. Artificial intelligence planning systems utilize explicit symbolic or logical models of discrete operations and construct consistent planned sequences using symbolic reasoning to achieve specified task goals. In the development of...