Automated machine tooling design considerations for high-volume optoelectronic device manufacturing systems

2001 ◽  
Author(s):  
Kamran S. Mobarhan ◽  
Soon Jang ◽  
David K. Porter
Keyword(s):  
Manufacturing Systems ◽  
High Volume ◽  
Optoelectronic Device ◽  
Design Considerations ◽  
Tooling Design ◽  
Machine Tooling

Intrusion Detection of Cyber-Physical Attacks in Manufacturing Systems: A Review

2019 ◽  
Author(s):  
Mingtao Wu ◽  
Young B. Moon
Keyword(s):  
Intrusion Detection ◽  
Manufacturing Systems ◽  
High Volume ◽  
Cyber Attacks ◽  
Intrusion Detection Systems ◽  
Detection Methods ◽  
False Alarms ◽  
Alert Correlation ◽  
Acoustic Image ◽  
Detection Systems

Abstract Cyber-physical manufacturing system is the vision of future manufacturing systems where physical components are fully integrated through various networks and the Internet. The integration enables the access to computation resources that can improve efficiency, sustainability and cost-effectiveness. However, its openness and connectivity also enlarge the attack surface for cyber-attacks and cyber-physical attacks. A critical challenge in defending those attacks is that current intrusion detection methods cannot timely detect cyber-physical attacks. Studies showed that the physical detection provides a higher accuracy and a shorter respond time compared to network-based or host-based intrusion detection systems. Moreover, alert correlation and management methods help reducing the number of alerts and identifying the root cause of the attack. In this paper, the intrusion detection research relevant to cyber-physical manufacturing security is reviewed. The physical detection methods — using side-channel data, including acoustic, image, acceleration, and power consumption data to disclose attacks during the manufacturing process — are analyzed. Finally, the alert correlation methods — that manage the high volume of alerts generated from intrusion detection systems via logical relationships to reduce the data redundancy and false alarms — are reviewed. The study show that the cyber-physical attacks are existing and rising concerns in industry. Also, the increasing efforts in cyber-physical intrusion detection and correlation research can be utilized to secure the future manufacturing systems.

Technology Lecture - Advanced manufacturing technology

1984 ◽  
Vol 395 (1808) ◽  
pp. 47-62
Keyword(s):  
Flexible Manufacturing ◽  
Manufacturing Systems ◽  
Metal Cutting ◽  
Production Control ◽  
Computer Control ◽  
High Volume ◽  
Economic Production ◽  
Long Time ◽  
Consumer Durable ◽  
Automatic Assembly Systems

Complex and expensive mass production assembly lines have been in existence for a long time in, for instance, the car and consumer durable industries. High volume automatic metal cutting and forming machines have been developed to feed these lines with fasteners and other parts. All these have been dedicated systems; in some cases it is impracticable to adapt these production lines for a different product and even where this is possible they are inflexible, in the sense that it requires a relatively long time to reset the machines. Long runs were therefore necessary for economic production. The advent of the numerically controlled cutting and forming machines over the last 25 years followed by c. n. c. equipment with tool changing facilities, and more recently by groups of such machines loaded and unloaded automatically under computer control, called flexible manufacturing systems, have added a new dimension of flexibility in manufacture, which enables production of relatively small batches to be made economically. The next, much more difficult, step of constructing flexible automatic assembly systems is still in its infancy. The development of computers, and particularly of the microprocessor, have also revolutionized design and production control. The paper sets out the background to these changes, gives some account of their present state of development and the commercial advantages stemming from them through reduced cost and increased speed of response to market requirements.

On Dimension Synthesis of Hart’s Inversor III Straight-Line Mechanism As a Precision Robotic End-of-Arm Tool

2019 ◽  
Author(s):  
Ming Z. Huang
Keyword(s):  
Flexible Manufacturing ◽  
Flexible Manufacturing Systems ◽  
High Performance ◽  
Manufacturing Systems ◽  
Analytical Approach ◽  
Industrial Robot ◽  
Mechanical Advantage ◽  
Design Considerations ◽  
Straight Line ◽  
Straight Line Mechanism

Abstract In flexible manufacturing systems, straight line motions are often required in part handling, assembly, cutting, sealing, or welding operations. Rather than using a high performance industrial robot to execute the path directly, employment of a less precise robot outfitted with an end-of-arm tool comprising an exact straight line mechanism could be more effective in both performance and in cost. Exact straight line mechanisms with pin connections are easy to manufacture and assemble, in comparison to those realized by translational joints where alignment of linear axes or surface could be problematic. Such an issue becomes even more difficult when relatively large stroke and/or high precision of straight line motion is required. In this paper, a study of the kinematic characteristics of a special class of exact straight line mechanisms, Hart’s Inversor Type III, with emphasis toward dimension synthesis, is presented. An analytical approach for sizing the link lengths with respect to a desirable straight line stroke constraint is developed and illustrated with examples. Also presented are stiffness and mechanical advantage characteristics for additional design considerations.

Autonomous Distributed AGV System Based on Taxi Transportation Strategy: Effect of Multiple-Load AGVs on Conveyance Efficiency

2010 ◽  
Author(s):  
Takahiro Kono ◽  
Keiji Ogawa ◽  
Toshiki Hirogaki ◽  
Eiichi Aoyama
Keyword(s):  
Decision Making ◽  
Traffic Engineering ◽  
Manufacturing Systems ◽  
Manufacturing System ◽  
Sudden Change ◽  
High Volume ◽  
General Idea ◽  
Component Part ◽  
Autonomous Decision ◽  
Multiple Load

Manufacturing systems have recently been shifted from high-volume/low-mix manufacturing to high-mix/low-volume manufacturing and renamed “flexible manufacturing systems” (FMSs). However, problems have occurred, primarily the fact that such systems might not be able to cope with quick environment changes. It is not easy to change the layout and facilities of a factory once we build a big system because it controls the whole manufacturing system in FMS hierarchically. Therefore, new systems for variety-variable manufacturing with flexibility are proposed. A general idea of an autonomous and distributed manufacturing system has been suggested, and it seems feasible because each component part has original information-treatment and decision-making functions. The system gives the constituent elements of its manufacturing system an autonomous decision-making function. The role of an automated guided vehicle (AGV) conveyance system, which controls the flow of parts in a factory, is becoming more important, but research in the conveyance system has been uneven. Examples include studies on AGV action decision-making theory, scheduling, and so on, whereas meanwhile, the use of autonomous decision-making controls in places where transportation is received and transported has hardly been researched. On the other hand, applications of knowledge from one field to a different field have recently drawing much attention. Such activity is known as a mimetic solution. We propose an application of knowledge hidden in traffic engineering to manufacture a trial mimetic solution. Manufacturing systems must withstand such uncertain factors as a sudden change of the manufacturing process, and we therefore propose applying the characteristics of taxi transportation with flexibility to an AGV conveyance system. A taxi is a transport unit in a traffic system with higher flexibility in traveling routes and arrival/departure points compared with railways and buses. Our proposed system’s performance is shown based on conveyance efficiency and energy consumption. Additionally, the multiple-load taxis, which are based on taxi characteristics such different body types (small or medium), are applied and evaluated in terms of their conveyance efficiency. Results indicate that a combination of such multiple-load AGVs shows a good performance in terms of higher conveyance efficiency and lower environmental impact.

Optimization of Cellular Manufacturing Systems Using Genetic Algorithm: A Review

2012 ◽  
Vol 622-623 ◽  
pp. 60-63
Author(s):  
Pawan Kumar Arora ◽  
Abid Haleem ◽  
M.K. Singh ◽  
Harish Kumar
Keyword(s):  
Genetic Algorithm ◽  
Manufacturing Systems ◽  
Manufacturing System ◽  
Group Technology ◽  
Cellular Manufacturing ◽  
Research Work ◽  
Manufacturing Strategy ◽  
Cellular Manufacturing Systems ◽  
Design Considerations ◽  
Modern Optimization

Though Cellular Manufacturing System (CMS) has been an active area of research for past few decades, but, still it has not received the requisite attention so far. Despite of a useful manufacturing strategy based on the group technology (GT), it is yet to be established on a larger scale. The CMS allows the grouping of the facilities on the basis of similarity in manufacturing processes and design considerations of the products to be manufactured. A lot of researchers have worked for various developments related to various issues of CMS, but for last decades, the modern optimization tools like genetic algorithm (GA), artificial neural networks (ANN) have changed the scenario and research work has been accelerated related to CMS. The present paper is an attempt to discuss the GA related research work by various researchers for CMS. Research work along with their impact of past researchers has been discussed and reported here.

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