Cell formation in group technology: review, evaluation and directions for future research

Design of cellular manufacturing systems: An invited review

Intelligent workstation controller for computer-integrated manufacturing: Problems and models

Efficient solutions to the cell-formation problem with multiple routings via a double-loop genetic algorithm

We introduce a zero-one integer programming model for the simultaneous solution of the cell formation and operation allocation problem in cellular manufacturing. We assume that there is a set of existing machines in a manufacturing shop and that there is a set of part types to be processed on these machines. Each part type is assumed to have more than one process plan, and each operation of a part type may be performed on more than one machine. The objective of the model is to simultaneously form machine groups (cells) and allocate operations of the part types to the regrouped machines in such a way as to minimize the sum of operation costs, refixturing costs and transportation costs. Computational results are provided to demonstrate the viability of the model.

A mathematical programming approach to joint cell formation and operation allocation in cellular manufacturing

Macro-scale, hemispherical-shaped resonating gyroscopes are used in high-precision motion and navigation applications. In these gyroscopes, a 3D wine-glass, hemispherical-shaped resonating structure is used as the main sensing element. Motivated by the success of macroscale hemispherical shape gyroscopes, many microscale hemispherical-shaped resonators have been produced due to the rapid advancement in semiconductor-based microfabrication technologies. The dynamic performance of hemispherical resonators depends on the degree of symmetry, uniformity of thickness, and surface smoothness, which, in turn, depend on the type of materials and fabrication methods. The main aim of this review paper is to summarize the materials, characterization and fabrication methods reported in the literature for the fabrication of microscale hemispherical resonator gyroscopes (µHRGs). The theory behind the development of HRGs is described and advancements in the fabrication of microscale HRGs through various semiconductor-based fabrication techniques are outlined. The integration of electrodes with the hemispherical structure for electrical transduction using other materials and fabrication methods is also presented. A comparison of different materials and methods of fabrication from the point of view of device characteristics and dynamic performance is discussed. This review can help researchers in their future research and engineers to select the materials and methods for µHRG development.

/pdf/recent-advances-in-mems-based-3d-hemispherical-resonator-1c3kgw9x.pdf

Recent Advances in MEMS-Based 3D Hemispherical Resonator Gyroscope (HRG)—A Sensor of Choice

In this paper we consider the problem of assigning operations of part types to one or more machines in a cellular manufacturing system. We develop a mixed integer linear model considering trade-off between refixturing and material handling movement. Examples are included to illustrate the applications of the models developed.

A production planning model for cellular manufacturing systems with refixturing considerations

Refixturing and material handling aspects of cellular manufacturing systems are considered. For this purpose, two mathematical models are developed to determine machine groups and the assignment of part operations to machines. The first model is used simultaneously to assign operations of parts to machines and form machine groups. The second model is developed for the situation when new machines are procured for a cellular manufacturing environment. Examples are included to illustrate the applications of the models.

Design of cellular manufacturing systems with refixturing and material handling considerations

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Recent Advances in MEMS-Based 3D Hemispherical Resonator Gyroscope (HRG)—A Sensor of Choice

A production planning model for cellular manufacturing systems with refixturing considerations

Design of cellular manufacturing systems with refixturing and material handling considerations