A coiling robot for elevator compensation chain

2016 ◽  
Vol 43 (4) ◽  
pp. 403-408
Author(s):  
Xianchuan Shi ◽  
Liang Gao ◽  
Lei Qian ◽  
Mingya Cheng ◽  
Kyle Jiang
Keyword(s):  
Control System ◽  
Servo Control ◽  
Original Position ◽  
Content Type ◽  
Servo Control System ◽  
And Control ◽  
System Designs ◽  
Practical Implications ◽  
Analog Output

Purpose The purpose of this paper is to develop a coiling robot in the production of coated elevator compensation chains to replace the manual coiling operations and improve the quality of compensation chains. Design/methodology/approach This paper introduces both mechanical and servo control system designs of the coiling robot. The structure of two friction wheels stabilizes the conveying speed of compensation chain, so the chain speed matches with the car speed. A centering mechanism pushes the chain to its original position. Seven servo motors are integrated into the system, and they are controlled by a servo control system based on programmable logic controller, positioning controller, analog output block and touch screen. Findings The results of the project show that the coiling robot can both greatly reduce the number of workers and the intensity of the work and improve the quality of the chain. The chain lid by the robot is not only neat, but also uniform in its inner stress. Research limitations/implications When the output speed of the compensation chain from the rear friction wheel does not match the coiling speed, the coiling operation has to be halted. Then, the operator adjusts the chain speed and restarts the coiling operation. Practical implications The coiling robot is proven working. It has been adopted by a leading company manufacturing compensation chains. Originality/value This is the first coiling robot which is practically used in a production line of compensation chains. Its design, mechanism and control systems are of great reference values to people.

Supervisor workplace gossip and its impact on employees

2018 ◽  
Vol 33 (1) ◽  
pp. 93-105 ◽  
Author(s):  
Chien-Chih Kuo ◽  
Chih-Ying Wu ◽  
Chia-Wu Lin
Keyword(s):  
Communication Style ◽  
Control Variables ◽  
Content Type ◽  
Member Exchange ◽  
Research Findings ◽  
And Control ◽  
The Impact ◽  
Practical Implications

Purpose The purpose of this paper is to explore the role of supervisor gossip in the workplace. This paper proposes a hypothetical model in which supervisor gossip has an effect on leader-member exchange (LMX), in turn resulting in perceived supervisor ostracism among subordinates. Design/methodology/approach A dyadic research design was applied to collect data from Taiwanese employees. Supervisors participated in a survey containing measures of supervisor gossip and control variables, whereas subordinates responded to a questionnaire on LMX, perceived supervisor ostracism, and control variables. Findings The results indicated that positive supervisor gossip significantly affected LMX. Furthermore, healthy LMX reduced subordinates’ perceptions of supervisor ostracism. Research limitations/implications All participants were recruited in Taiwan, which is a limitation for generalising the research findings. Future studies should investigate multiple societies of various cultural profiles. Practical implications To improve the quality of the supervisor-subordinate relationship, supervisors should adopt a positive informal communication style, and organisations should provide supervisors with information regarding the implications of workplace gossip, illustrating the substantial benefits of positive gossip and the potential drawbacks of negative gossip. Originality/value The present study highlighted the role of supervisor workplace gossip in the field of leadership and empirically investigated the impact of supervisor gossip on subordinates’ reactions.

Socio-emotional wealth preservation and KPI voluntary disclosure quality

2020 ◽  
Vol 18 (3) ◽  
pp. 459-482
Author(s):  
Saoussen Boujelben ◽  
Chourouk Boujelben
Keyword(s):  
Voluntary Disclosure ◽  
Family Firms ◽  
Family Members ◽  
Family Influence ◽  
Disclosure Quality ◽  
Content Type ◽  
The Family ◽  
And Control ◽  
Practical Implications

Purpose The purpose of this paper is to examine the effect of the emotional attachment strength of family members to their business on the quality of the voluntary disclosure of their key performance indicator (KPI). More specifically, the authors focused on the effect of two dimensions of the socio-emotional theory, i.e. “family influence and control” and “firm dynasty succession.” Design/methodology/approach The authors performed a content analysis of annual reports for a sample of 87 French families listed in CAC All-Tradable to calculate a disclosure quality index of KPI. The authors proxied the “family influence and control” by the proportion of family members appointed in the board. To identify the “firm dynasty succession” concern, the authors classified firms according to the generation they belonged to. The authors estimated a cross-sectional linear regression model to meet the research objective. Findings This study confirms the role of the family affective attachment in decreasing the quality of KPI disclosure in such a way to preserve its socio-emotional wealth. The family firms’ principals who desire to sustain their control on the firm, to perpetuate the business for future generations and to protect their emotional wealth tend to avoid the disclosure of credible and reliable KPI information. Practical implications The findings have meaningful practical implications. First, they provide relevant insights into the regulatory bodies of the financial reporting regarding the increasing appeal for making KPI disclosure mandatory. Second, as the family businesses are the most widespread proprietorship in the French context, the effect of the family agenda on the quality of the KPI should be of interest to various policymakers and financial statements’ users of such firms. Third, the results inform nonfamily shareholders regarding the importance of selecting representatives on the board that should share similar interest with regard to KPI disclosure. Social implications From a societal perspective, this study is relevant in taking into account the critical role the family businesses have in the French economy. This study should help the minority shareholders to protect their interests and maximize their wealth within the family firm because it sheds light on the influence that family members have on hiding key information on the firm’s real performance. Originality/value To the best of the authors’ knowledge, no prior study in the family firms literature has examined the quality of voluntary disclosure of KPI. Although most previous studies merely compared family and nonfamily firms in terms of voluntary disclosure, the authors acknowledge and address the heterogeneity between family firms. The authors contribute to the few prior empirical validations of SEW implication on voluntary disclosure decisions by testing the effect of an additional dimension, which is family dynasty.

Build for Motion Control System of Planar Five-Bar Parallel Mechanism

2013 ◽  
Vol 397-400 ◽  
pp. 1563-1567
Author(s):  
Dong Yang Zhao ◽  
Hong Bing Xin ◽  
Quan Lai Li ◽  
Deng Qi Cui ◽  
Yue Fei Xin ◽  
...  
Keyword(s):  
Control System ◽  
Motion Control ◽  
Parallel Mechanism ◽  
Parallel Robot ◽  
Servo Control ◽  
Motion Controller ◽  
The Core ◽  
Planning And Control ◽  
Servo Control System ◽  
And Control

MC206X motion controller being chosen as the core of the system, this paper built the control system of a planar five-bar parallel robot, achieved the debugging of the hardware of a full servo control system, developed the Motion Perfect software system on the basis of the Windows-based operating system to complete the planning and control of continuous paths.

A Servo Control System of Dynamic Target Simulation Device for Aerial Camera

2012 ◽  
Vol 220-223 ◽  
pp. 1345-1349
Author(s):  
Qi Ji
Keyword(s):  
Control System ◽  
Image Quality ◽  
High Altitude ◽  
Control Model ◽  
Servo Control ◽  
Dynamic Image ◽  
Servo Control System ◽  
Dynamic Target ◽  
Relationship Of

This article introduces a dynamic target simulation device to evaluate dynamic image quality of the aerial camera. The device simulated the positional relationship of the sky and ground in the laboratory when aerial camera flies at high altitude. And it can be used to inspect camera image quality of aerial camera flying at high altitude in laboratory. At a same time, the article focuses on this servo control system of device, building a control model, and giving control strategy. The servo control system was proved stably and reliably after experimental verification. And it provides a strong guarantee for the test of the dynamic image.

Improvement on Gap Detection Servo System of EDM Based on Fuzzy Inference System

2012 ◽  
Vol 505 ◽  
pp. 199-202
Author(s):  
Yan Wang ◽  
Guang He Wu
Keyword(s):  
Adaptive Control ◽  
Control System ◽  
Fuzzy Inference ◽  
Servo Control ◽  
Detection Methods ◽  
Gap Detection ◽  
Fuzzy Pid ◽  
Inference System ◽  
Servo Control System ◽  
And Control

The chief purpose of servo control system is gap detection and control during the process of EDM. In this paper, there are evaluations and introductions about two gap detection methods--average voltage detection and effective spark number detection, which are widely used in nowadays. A new method based on fuzzy PID adaptive control about the two gap detection methods is introduced to improve the accuracy and anti-interference performance.

scholarly journals “I live with other people and not alone”: a survey of the views and experiences of older people using Shared Lives (adult placement)

2016 ◽  
Vol 20 (3) ◽  
pp. 179-186 ◽  
Author(s):  
Nadia Brookes ◽  
Sinead Palmer ◽  
Lisa Callaghan
Keyword(s):  
Older People ◽  
Well Being ◽  
Community Based ◽  
Negative Experiences ◽  
Content Type ◽  
Form Part ◽  
Family Based ◽  
And Control ◽  
Practical Implications

Purpose The purpose of this paper is to report on the views and experiences of older people using Shared Lives (adult placement) in 2012/2013. Design/methodology/approach As part of a survey collecting information about outcomes for older users of Shared Lives issues of whether it had made a difference to quality of life, and positive and negative experiences of support were explored. Findings Questionnaires were returned by 150 older people using Shared Lives services. Findings suggest that this model of community-based support has a number of advantages for some older people, such as reducing social isolation and loneliness, promoting independence, choice and control, providing emotional support and increased well-being. Research limitations/implications The questionnaire was self-completed and so responses were not followed up to provide deeper insights. Practical implications Shared Lives is not appropriate for everyone but it is suggested that this option should form part of local commissioning strategies, be part of a range of options for social care practitioners to consider in their work with older people and helps to meet various current policy imperatives. Originality/value The potential of Shared Lives for older people is under-researched and this paper contributes to the literature in exploring the views of older people about family-based support in the community.

Research of Servo System for WEDM Based on DSP

2011 ◽  
Vol 291-294 ◽  
pp. 2834-2837
Author(s):  
Lan Chen
Keyword(s):  
Control System ◽  
System Development ◽  
Short Circuit ◽  
Servo Control ◽  
Servo Control System ◽  
Feed Control ◽  
Detection Circuit ◽  
And Control ◽  
Circuit Output ◽  
Discharge Gap

WEDM as a special processing method is widely used in the manufacturing. Focused on the hardware and control strategy of servo control system deficiencies, a new design plan is proposed for WEDM servo control system based on DSP. Author takes TMS320LF2407A DSP chip as core processor for the system, development of the servo feed control system. In the designing, depend on detection circuit output signal which reflect discharge gap state load, the normal spark discharge and short circuit, and be processed by the corresponding module of DSP, the principle is that get the best spark rate.

scholarly journals Trajectory generation and control for automatic manipulation

Robotica ◽  
1994 ◽  
Vol 12 (2) ◽  
pp. 115-125
Author(s):  
Vincent Hayward ◽  
Laeeque Daneshmend ◽  
Ajit Nilakantan
Keyword(s):  
Control System ◽  
Real Time ◽  
Servo Control ◽  
Tracking Accuracy ◽  
Kinematic Constraints ◽  
Servo Control System ◽  
Mcgill University ◽  
Available Information ◽  
And Control ◽  
General Dynamic

SUMMARYA method is described to convert information available at manipulator programming level into trajectories which are suitable for tracking by a servo control system. This process generates trajectories in real time which comply with general dynamic and kinematic constraints. Tracking accuracy will depend mainly on the acceleration demand of the nominal trajectory setpoints - the actuator output demands, in particular, must remain bounded. Our scheme takes into consideration at the trajectory computation level the dynamics of the underlying system, dynamically available information acquired through sensors, and various types of constraints, such as manipulators. It has been developed in the context of a multi-manipulator programming and control system called Kali and developed at McGill University.

Carbon Fiber Multilayer Loom Let off the Mathematical Model of Control System

2013 ◽  
Vol 846-847 ◽  
pp. 157-160
Author(s):  
Hua Qing Wang ◽  
Jian Cheng Yang ◽  
Kai Yang ◽  
Jian Feng Qin ◽  
Yu Bai ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Carbon Fiber ◽  
Servo Control ◽  
Servo Control System ◽  
Warp Tension ◽  
Compensation Device ◽  
The Mathematical Model ◽  
Back Rest

Let-off system application of computer and electronic technology, may at any time adjust the loom is likely to change in the process of weaving yarn tension and density, thus improve the quality of the fabric. In this paper, based on the study of the function of the let-off motion, let-off servo control system is established the mathematical model of the warp beam unwinding; According to the carbon fiber Angle of multilayer union loom warp tension requirement, design a set of tension compensation device,and established the mathematical model of back rest. Easy and convenient, the whole control system has better reliability and real-time performance.

Towards a hierarchy of hotel guests’ in-room needs

2019 ◽  
Vol 31 (12) ◽  
pp. 4401-4418 ◽  
Author(s):  
Elizabeth M. Ineson ◽  
Djordje Čomić ◽  
Lazar Kalmić
Keyword(s):  
Design Methodology ◽  
Theory And Practice ◽  
Primary Data ◽  
Valuable Contribution ◽  
Social Phenomena ◽  
Content Type ◽  
Hotel Room ◽  
And Control ◽  
Practical Implications

Purpose This paper aims to examine, discuss and intertwine theory and practice related to hotel guests’ home and lodging environments to identify their in-room psychological and physical needs. Design/methodology/approach The research design is qualitative, with a focus on understanding social phenomena through direct observation, communication and textual analysis; contextual subjective accuracy is stressed over generality. Using interpretative phenomenology, the psychological and sociological aspects of the individual’s journey are deliberated including: travelling through one’s own room; virtual travels from the room via electronic media; the hotel room as a reconstruction of the intimate sphere; the return to, and transformation of, one’s own room; and the accumulation of souvenirs. The tabulated findings are linked to hotel guests’ in-room needs using inductive thematic coding and content analysis. Findings The psychological and physical in-room needs of individual hotel guests are identified; safety, security and control emerge as paramount. Practical suggestions to complement, expand and enrich guests’ in-room experiences are offered. Research limitations/implications As the focus is limited predominantly to the debate and rationalisation of concepts and the methodology is exploratory as opposed to scientific, the validity of the findings may be questioned; primary data triangulation modifies this criticism. Future researchers are advised to consider the evidence when developing hypotheses to establish a theory of lodging. Research on improving the quality of facilities and services should centre on an analysis of the concept of “being in one’s own room”, followed by an analysis of the transposition to “being in a hotel room” from both physiological and psychological perspectives. Practical implications Referring to the developed hierarchy, accommodation/lodging providers are recommended to increase their efforts to exceed the expectations of individual guests. Guest profiling should focus on individual needs and preferences, ideally at the booking stage. Social implications Accommodation/lodging providers are encouraged to demonstrate social awareness and empathy through individual social responsibility efforts to enhance the experiences and quality of life of their guests. Originality/value The paper makes a valuable contribution by debating and connecting philosophical and psychological literature to the practical needs of hotel guests. It recognises and concludes that, as they are merely temporary residents, hotel guests’ experiences embrace a series of journeys through different, individual interiors. Based on this premise, an innovative hierarchy of hotel guests’ in-room needs is developed.

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