scholarly journals Framework for Resilience Informed Decision Making in Early Design

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Daniel Hulse
Keyword(s):  
Design Process ◽  
Health Management ◽  
Fault Tolerant ◽  
Early Design ◽  
System Reconfiguration ◽  
Response Performance ◽  
Failure Avoidance ◽  
Operational Failure ◽  
Goal Change ◽  
Made In

Early in the design process, informed decisions must be made to ensure that the developed system will be resilient—that is, capable of preventing, mitigating, or recovering failures. However, at this phase of design, many options exist to achieve resilience, each with different effects on the system’s fault response, performance, and difficulty to implement. As a result, it is important to be able to quantify the value of a design’s resilience so that it can be traded off against these other concerns. Advancements in the capabilities of Prognostics and Health Management, fault-tolerant control and related technologies have enabled a variety of novel prevention and recovery features that require an understanding of the system’s structure and available functions during operation to consider properly. This work aims to develop modelling and design frameworks enabling the consideration of these features, such as system reconfiguration, functional redundancy, operational failure avoidance, and goal change early in the design process. Such design frameworks will show which designed features are most appropriate in the system and will account for the uncertainty of assumptions made in early design phase.

Will Love Tear Us Apart: Adapting the Lyrical to the Ludic

CounterText ◽  
2016 ◽  
Vol 2 (2) ◽  
pp. 217-235
Author(s):  
Gordon Calleja
Keyword(s):  
Design Process ◽  
Game Design ◽  
Digital Games ◽  
Design Decisions ◽  
The Core ◽  
Lyrical Poetry ◽  
Insight Into ◽  
Made In

This paper gives an insight into the design process of a game adaptation of Joy Division's Love Will Tear Us Apart (1980). It outlines the challenges faced in attempting to reconcile the diverging qualities of lyrical poetry and digital games. In so doing, the paper examines the design decisions made in every segment of the game with a particular focus on the tension between the core concerns of the lyrical work being adapted and established tenets of game design.

scholarly journals Sliding Mode Fault Tolerant Control for Unmanned Aerial Vehicle with Sensor and Actuator Faults

Sensors ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 643 ◽  
Author(s):  
Juan Tan ◽  
Yonghua Fan ◽  
Pengpeng Yan ◽  
Chun Wang ◽  
Hao Feng
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Health Management ◽  
Fault Tolerant ◽  
Sliding Mode ◽  
Control Process ◽  
Fault Tolerant Control ◽  
Accelerometer Sensor ◽  
Actuator Failures ◽  
Aerial Vehicle ◽  
Gyroscope Sensor

The unmanned aerial vehicle (UAV) has been developing rapidly recently, and the safety and the reliability of the UAV are significant to the mission execution and the life of UAV. Sensor and actuator failures of a UAV are one of the most common malfunctions, threating the safety and life of the UAV. Fault-tolerant control technology is an effective method to improve the reliability and safety of UAV, which also contributes to vehicle health management (VHM). This paper deals with the sliding mode fault-tolerant control of the UAV, considering the failures of sensor and actuator. Firstly, a terminal sliding surface is designed to ensure the state of the system on the sliding mode surface throughout the control process based on the simplified coupling dynamic model. Then, the sliding mode control (SMC) method combined with the RBF neural network algorithm is used to design the parameters of the sliding mode controller, and with this, the efficiency of the design process is improved and system chattering is minimized. Finally, the Simulink simulations are carried out using a fault tolerance controller under the conditions where accelerometer sensor, gyroscope sensor or actuator failures is assumed. The results show that the proposed control strategy is quite an effective method for the control of UAVs with accelerometer sensor, gyroscope sensor or actuator failures.

Bringing Ergonomics to the Design of a Behavioural Care Unit

2000 ◽  
Vol 44 (8) ◽  
pp. 8-11
Author(s):  
Jacqueline B. Barnett
Keyword(s):  
Design Process ◽  
Iterative Process ◽  
User Needs ◽  
Work Processes ◽  
Team Members ◽  
Early Design ◽  
Design Changes ◽  
Final Design ◽  
The Individual ◽  
The Cost

The application of ergonomics is important when considering the built environment. In order to create an environment where form follows function, a detailed understanding of the tasks performed by the individuals who will live and work in the facility is required. Early involvement in the project is key to maximizing the benefit of ergonomics. At Sunnybrook and Women's College Health Sciences Centre in Toronto, Canada, this early intervention was embraced during the design process of a behavioural care unit for aggressive patients. The ergonomist was involved in three phases of design; user needs analysis, block schematics and detailed design. The user needs and characteristics were established using a combination of focus groups, interviews, direct observation, task analysis and critique of current working environments. The challenge was to present the information to the design team in a useful manner. The format chosen was a modification of Userfit (Poulson 1996) that outlined the various characteristics of the patient group and the design consequences with “what does this mean for me” statements. During the block schematics phase an iterative design process was used to ensure that the ergonomic principles and the user needs were incorporated into the design. Ergonomic input was used in determining the room sizes and layout and to ensure work processes were considered. Simple mock-ups and anthropometric data assisted in illustrating the need for design changes. Examples that highlight the areas of greatest impact of ergonomic intervention include the patient bathrooms, showers and tub room. Significant changes were made to the design to improve the safety of the work and living space of the end users. One of the greatest challenges was having an appreciation for the individual goals of the team members. Ensuring there was adequate space for equipment and staff often resulted in recommendations for increased space. This in turn would increase the cost of the project. The architect and, later in the project, the engineer had goals of bringing the project in on budget. The final design was very much a team effort and truly die result of an iterative process. The sum of the individual contributions could not match the combined efforts. It was only through the ergonomic contributions in this early design phase that the needs of the staff, patients and families could be so well represented. The success of the iterative process provides the foundation for bringing ergonomics considerations into the early design stages of future projects.

Wenceslas Coberghers Grundrissentwurf für die siebeneckige Marienwallfahrtskirche in Scherpenheuvel/Montaigu

Architectura ◽  
2019 ◽  
Vol 49 (1) ◽  
pp. 46-73
Author(s):  
Anke Naujokat
Keyword(s):  
Design Process ◽  
Floor Plan ◽  
Early Design ◽  
Ground Plan ◽  
Design Plan ◽  
Architectural Tradition

Abstract This paper examines an unusual heptagonal floor plan drawing held by the Ashmolean Museum in Oxford. The drawing is identified as an early design plan (ca. 1606) for the heptagonal Marian Pilgrimage church at Scherpenheuvel/Montaigu (Belgium). After describing the drawing in detail and attributing it to Wenzeslas Cobergher, the paper interprets the ground plan against the backdrop of the design process of the domed Sanctuary as well as in the broader context of Scherpenheuvel’s transformation into a symbolic and programmatic Pilgrimage ensemble by the sovereigns of the Spanish Netherlands, Archduke Albert VII of Austria and Infanta Isabella Clara Eugenia. With a view to the Italian architectural tradition, considerations are given to the ground plan’s geometry, its elevation and symbolic architectural motifs, before it is compared with the realized ground plan of the Pilgrimage church in Scherpenheuvel.

scholarly journals Typical Fault Estimation and Dynamic Analysis of a Leader-Follower Unmanned Aerial Vehicle Formation

2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Jian Shen ◽  
Qingyu Zhu ◽  
Xiaoguang Wang ◽  
Pengyun Chen
Keyword(s):  
Dynamic Analysis ◽  
Unmanned Aerial Vehicle ◽  
Cooperative Control ◽  
Health Management ◽  
Fault Tolerant ◽  
Design Method ◽  
Observer Design ◽  
Fault Estimation ◽  
Proportional Navigation ◽  
Aerial Vehicle

In this paper, the typical fault estimation and dynamic analysis are presented for a leader-follower unmanned aerial vehicle (UAV) formation system with external disturbances. Firstly, a dynamic model with proportional navigation guidance (PNG) control of the UAV formation is built. Then, an intermediate observer design method is adopted to estimate the system states and faults simultaneously. Based on the graph theory, the topology relationship between each node in the UAV formation has been also analyzed. The estimator and the system error have been created. Moreover, the typical faults, including the components failure, airframe damage, communication failure, formation collision, and environmental impact, are also discussed for the UAV system. Based on the fault-tolerant strategy, five familiar fault models are proposed from the perspectives of fault estimation, dynamical disturbances, and formation cooperative control. With an analysis of the results of states and faults estimation, the actuator faults can be estimated precisely with component failure and wind disturbances. Furthermore, the basic dynamic characteristics of the UAV formation are discussed. Besides, a comparison of two cases related to the wind disturbance has been accomplished to verify the performance of the fault estimator and controller. The results illustrate the credibility and applicability of the fault estimation and dynamic control strategies for the UAV system which are proposed in this paper. Finally, an extension about the UAV formation prognostic health management system is expounded from the point of view of the fault-tolerant control, dynamic modeling, and multifault estimation.

scholarly journals Online Fault-Tolerant Onboard Aeroengine Model Tuning Structure

2016 ◽  
Vol 2016 ◽  
pp. 1-15 ◽  
Author(s):  
Shuiting Ding ◽  
Ye Yuan ◽  
Naiyu Xue ◽  
Xiaofeng Liu
Keyword(s):  
Health Management ◽  
Fault Tolerant ◽  
Fault Diagnostics ◽  
Sensor Fault ◽  
Channel Switching ◽  
Working Process ◽  
Tuning Process ◽  
Model Tuning ◽  
Online Tuning ◽  
Fault Information

Online onboard aeroengine models (OBEMs) have been widely used in health management, fault diagnostics, and fault-tolerant control. A mismatch between the OBEM and the actual engine may be caused by a variety of factors such as health degradation or sensor fault and may influence the effectiveness of the systems mentioned above. However, mismatch caused by unpredictable sensor fault is hardly distinguished from that caused by health degradation through the tuning process. A fault-tolerant OBEM tuning structure is provided to perform the online tuning function when health degradation and sensor fault coexist. This system includes three parts that include improved fault diagnostics and isolation (IFDI), a fault-tolerant OBEM tuning system (FTOTS), and a channel switching module. IFDI is used to distinguish the cause of mismatch and provide fault information, a FTOTS is used to complete an online tuning process based on information obtained from the IFDI, and the channel switching module is used to switch the working process from the IFDI to the FTOTS. Several simulation results show that this system is able to distinguish the causes of mismatch and complete online tuning in the case of sensor faults.

Towards Fewer Design Failures

1994 ◽  
Author(s):  
Zhihui Yao ◽  
Aylmer L. Johnson
Keyword(s):  
Design Process ◽  
Constraint Satisfaction ◽  
Systematic Design ◽  
Early Design ◽  
Joint Design ◽  
Functional Modelling ◽  
Modelling System ◽  
Knowledge Hierarchy

Abstract Many designs fail because one or more checks are not done, or are done too late during the design process. A functional modelling system is presented, which provides systematic design checking at early design phases by means of constraint satisfaction. However, problems can occur if the design to be checked involves too many constraints. This paper presents some extended research, which establishes a knowledge hierarchy for managing the mathematical constraints, so that the computer can process large designs. A case study of fastening joint design using this hierarchy is discussed.

Review of Business Intelligence and Intelligent Systems in Healthcare Domain

2018 ◽  
pp. 2073-2086
Author(s):  
Halil Ibrahim Cebeci ◽  
Abdulkadir Hiziroglu
Keyword(s):  
Business Intelligence ◽  
Research Agenda ◽  
Intelligent Systems ◽  
Health Management ◽  
Health Science ◽  
Disease Treatment ◽  
Health Community ◽  
Future Work ◽  
Significant Attention ◽  
Made In

Business intelligence and corresponding intelligent components and tools have been one of those instruments that receive significant attention from health community. In order to raise more awareness on the potentials of business intelligence and intelligent systems, this paper aims to provide an overview of business intelligence in healthcare context by specifically focusing on the applications of intelligent systems. This study reviewed the current applications into three main categories and presented some important findings of that research in a systematic manner. The literature is wide with respect to the applications of business intelligence covering the issues from health management and policy related topics to more operational and tactical ones such as disease treatment, diagnostics, and hospital management. The discussions made in this article can also facilitate the researchers in that area to generate a research agenda for future work in applied health science, particularly within the context of health management and policy and health analytics.

Informed Forms and Matters

2021 ◽  
pp. 62-77
Author(s):  
Negar Kalantar ◽  
Alireza Borhani
Keyword(s):  
Design Process ◽  
Design Education ◽  
Early Stage ◽  
Pedagogical Approach ◽  
Form Finding ◽  
Stage Design ◽  
Early Design ◽  
Early Stage Design ◽  
Finding Method ◽  
Proper Balance

After sufficient consideration for the proper balance between material and formal constraints, this chapter describes a pedagogical approach that transforms the education of future architects through a 'form-finding' method, allowing the material to accommodate itself to form and celebrate its own nature. To enhance pedagogical improvement of foundational studies in architecture and further explore this pedagogy based on form-finding in early design education, this chapter also presents the challenges to integrating materiality within the design process, as derived from the incorporation of experimental form-finding methods into early-stage design.

Sign in / Sign up

Export Citation Format

Share Document