Processing Quality Dynamic Control Based on Quality State

2010 ◽  
Vol 37-38 ◽  
pp. 905-909 ◽  
Author(s):  
Yi Yong Yao ◽  
Li Ping Zhao ◽  
Yong Tao Qin
Keyword(s):  
Quality Control ◽  
Correlation Analysis ◽  
Control Strategies ◽  
Dynamic Control ◽  
Control Model ◽  
Quality Data ◽  
Formal Description ◽  
Identification Methods ◽  
The Stability ◽  
And Control

Depending on the identification methods of quality state such as correlation analysis, a quality identification and control model based on quality state was established in this paper. This model included formal description methods, identification methods, and quality control strategies. Based on the product quality data correlation analysis, the model’s application procedures were put forward. It provides an effective approach to maintaining ideal quality state, to improving the stability and controllability of quality control system. It constructs an application foundation for quality dynamic control.

scholarly journals Investigations on Vehicle Rollover Prevention Using LQG Regulator

2014 ◽  
Vol 2014 ◽  
pp. 1-11
Author(s):  
Binda Mridula Balakrishnan ◽  
Marimuthu Rajaram
Keyword(s):  
Control Strategies ◽  
Stability Margin ◽  
Initial Investigation ◽  
Rollover Prevention ◽  
Contact Information ◽  
Vehicle Rollover ◽  
The Stability ◽  
And Control

This paper presents results of an initial investigation into vehicle roll model and control strategies suitable for preventing vehicle untripped rollovers. For vehicles that are deemed to be susceptible to wheel-liftoff, various control strategies are implemented in simulation. In this study, the authors propose a method for rollover prevention that does not require such accurate contact information. The validity of the stability margin is shown, and it is used to realize rollover prevention in the direction of the roll. The primary assumption in their implementation is that the vehicle in question is equipped with a conventional controller system.

scholarly journals A Small Membrane Stabilizing Protein Critical to the Pathogenicity of Staphylococcus aureus

2020 ◽  
Vol 88 (9) ◽  
Author(s):  
Seána Duggan ◽  
Maisem Laabei ◽  
Alaa Abdulaziz Alnahari ◽  
Eóin C. O’Brien ◽  
Keenan A. Lacey ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Iron Homeostasis ◽  
Control Strategies ◽  
Antibiotic Resistant ◽  
Content Type ◽  
Promising Target ◽  
Significant Impairment ◽  
The Stability ◽  
Conventional Antibiotics ◽  
And Control

ABSTRACT Staphylococcus aureus is a major human pathogen, and the emergence of antibiotic-resistant strains is making all types of S. aureus infections more challenging to treat. With a pressing need to develop alternative control strategies to use alongside or in place of conventional antibiotics, one approach is the targeting of established virulence factors. However, attempts at this have had little success to date, suggesting that we need to better understand how this pathogen causes disease if effective targets are to be identified. To address this, using a functional genomics approach, we have identified a small membrane-bound protein that we have called MspA. Inactivation of this protein results in the loss of the ability of S. aureus to secrete cytolytic toxins, protect itself from several aspects of the human innate immune system, and control its iron homeostasis. These changes appear to be mediated through a change in the stability of the bacterial membrane as a consequence of iron toxicity. These pleiotropic effects on the ability of the pathogen to interact with its host result in significant impairment in the ability of S. aureus to cause infection in both a subcutaneous and sepsis model of infection. Given the scale of the effect the inactivation of MspA causes, it represents a unique and promising target for the development of a novel therapeutic approach.

Quality Control Model for Manufacturing Process Based on GQMM

2011 ◽  
Vol 214 ◽  
pp. 612-617 ◽  
Author(s):  
Zhong Hua Yu ◽  
Juan Zhou
Keyword(s):  
Quality Control ◽  
Manufacturing Process ◽  
Manufacturing System ◽  
Control Model ◽  
Formal Description ◽  
Improve Quality ◽  
Knowledge Based ◽  
Structured Analysis ◽  
Goal Question Metric

A structured quality control model was proposed. It was a multilevel and knowledge-based quality control model which took Goal, Question, Metric, Measure and other fundamental elements as the main line, structured principle as guidance, manufacturing process as carrier, and improve quality of manufacturing system as destination. Firstly, a structured analysis principle was introduced. And then a structured quality control model was proposed combining bearing manufacturing process. A formal description of mappings between Goal-Question-Metric-Measure (GQMM) was also discussed. Finally; the architecture of the model was presented.

scholarly journals The role of measurement in the development of industrial automation

ACTA IMEKO ◽  
2014 ◽  
Vol 3 (1) ◽  
pp. 4
Author(s):  
S. S. Carlisle
Keyword(s):  
Quality Control ◽  
Process Control ◽  
Control Strategies ◽  
Manufacturing Processes ◽  
Industrial Automation ◽  
And Control ◽  
Measurement And Control ◽  
International Measurement

<p>This is a reissue of a paper which appeared in ACTA IMEKO 1967, Proceedings of the 4th International Measurement Congress, 1967, Warsaw, vol. 1, pp. 37-50.</p> <p>The paper sets a frame on the role of measurement and control as critical tools to support the automation of manufacturing processes. In this perspective three main requirements for measurement are discussed, i.e., to identify where automation can be most profitably used; to investigate individual process behaviors and hence to formulate process control strategies; and finally to perform quality control of products.</p>

Modeling and Control of a Spherical Inverted Pendulum With Actuator Saturation

2019 ◽  
Author(s):  
Geovani Bondo ◽  
Chengzhi Yuan ◽  
Chang Duan
Keyword(s):  
Degrees Of Freedom ◽  
Inverted Pendulum ◽  
Actuator Saturation ◽  
Control Strategies ◽  
Mathematic Model ◽  
Disturbance Attenuation ◽  
Modeling And Control ◽  
Advanced Control ◽  
The Stability ◽  
And Control

Abstract This paper studies the modeling and control of a spherical inverted pendulum (SIP). The SIP is deemed to be a reasonable model for rocket-propelled body and is often used to test advanced control strategies. The mathematic model is derived based on a Quanser two degrees-of-freedom inverted pendulum commercial product. The pendulum is mounted on a five-bar mechanism that is actuated by two rotary servo base units. Unlike conventional assumption that the two motors are allowed to rotate simultaneously, we assume a more challenging scenario that at one time only one motor is working. The system is hence modeled as a switched system as two motors have to be switched in order to balance the pendulum at its unstable equilibrium. Switched controllers, together with a switching strategy are developed to ensure the stability of the system and satisfy a disturbance attenuation performance index. Simulation results are presented to show the effectiveness of the proposed method.

scholarly journals Research on Correlation Analysis between Process Parameters of NC Machining and Quality Data Based on Grey Relational Analysis

2018 ◽  
Vol 175 ◽  
pp. 03053
Author(s):  
Ce Wang ◽  
Guijiang Duan ◽  
Rui Liu ◽  
Xiong Han
Keyword(s):  
Quality Control ◽  
Correlation Analysis ◽  
Process Parameters ◽  
Machine Tools ◽  
Quality Data ◽  
Cnc Machine Tools ◽  
Cnc Machine ◽  
Analysis Theory ◽  
Grey Correlation Analysis ◽  
Grey Relational

With the wide use of CNC machine tools, data resources are gradually enriched. How to use the collected data resources for quality control becomes a hot topic for researchers. This paper introduces the use of grey correlation analysis theory to establish the relationship between the process parameters of CNC machine tools and quality data, and then provides a theoretical basis for the quality control using the process parameters of CNC machine tools.

scholarly journals Efficient Heterogeneous Network-Routing Method Based on Dynamic Control Middleware for Cyber-Physical System

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Hyungsoo Lee ◽  
Jaehwan Lee ◽  
Sanghyuck Nam ◽  
Sangoh Park
Keyword(s):  
Physical System ◽  
Heterogeneous Network ◽  
Dynamic Control ◽  
Network Routing ◽  
Global Network ◽  
Network Dynamic ◽  
Cyber Physical System ◽  
The Stability ◽  
The Many ◽  
And Control

A cyber-physical system depends on stable control and interaction between the many systems and devices connected to the network. Dynamic control middleware, which considers the characteristics of a cyber-physical system, supports the dynamic search and control of devices existing on the global network using Internet protocol version 6 (IPv6). However, systems and devices may connect to a network using a variety of heterogeneous protocols, not just IPv6. To solve the problem of heterogeneous protocols, this paper proposes a routing technique which enables network devices to communicate using different protocols. The proposed network-routing module can register devices with various protocols and improve the stability of the efficient heterogeneous network.

scholarly journals Modelling and Control of Trojan Propagation via Online Game Accelerators

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Qing Yan ◽  
Lipeng Song
Keyword(s):  
Control Strategies ◽  
Computer Game ◽  
Compartment Model ◽  
Numerical Results ◽  
Online Game ◽  
Optimal Control Strategy ◽  
Game Player ◽  
Game Players ◽  
The Stability ◽  
And Control

The widespread use of online game accelerators also induces them to become a medium for hackers to spread Trojan horses. In this paper, we propose a novel compartment model which considered the heterogeneity of online computer game players aiming to characterize the Trojan propagation. Specifically, we distinguish rational game players from impulsive game players in our model. The spreading threshold is obtained, and the global stability of equilibrium is also verified. Moreover, Trojan’s control problem is studied by using Pontryagin’s maximum principle. Numerical results confirm the stability of the system and the effectiveness of the optimal control strategy. Besides, more numerical results also show that some control strategies such as warning and caution should be taken at the very beginning of game player downloading the malicious accelerator.

scholarly journals MPPT Control for Wind Energy Conversion System Based on a T-S Fuzzy

2018 ◽  
Vol 9 (2) ◽  
pp. 811 ◽  
Author(s):  
Abdennasser Benkada ◽  
H. Chaikhy ◽  
M. Monkade
Keyword(s):  
Control Strategies ◽  
Fuzzy Model ◽  
Synchronous Generator ◽  
Maximum Power ◽  
Linear Matrix ◽  
Modeling And Control ◽  
Point Tracking ◽  
Power Point ◽  
The Stability ◽  
And Control

<span lang="EN-US">In this paper, we focus on the modeling and control of a wind power system based on a Permanent Magnet Synchronous Generator (PMSG). We proposed a technique of control strategies to have the maximum power from wind turbine (WT). This study deals with the problem of Maximum Power Point Tracking (MPPT) based on Takagi Sugeno fuzzy model. The stability analysis is achieved. The gains of the designed controller are calculated by solving Linear Matrix Inequality (LMI). Finally, simulation results are provided to demonstrate the validity and the effectiveness of the proposed method.  </span>

The Research of the Photovoltaic DC Grid-Connected Converter Applied in Flexible DC Grid

2014 ◽  
Vol 556-562 ◽  
pp. 1712-1715 ◽  
Author(s):  
Chang Bin Ju ◽  
Huan Wang ◽  
Wei Feng ◽  
Hong Hua Xu
Keyword(s):  
Control Strategies ◽  
Rapid Development ◽  
Power Level ◽  
Reference Value ◽  
Extension Problem ◽  
High Voltage Direct Current ◽  
Hybrid Microgrid ◽  
New Energy ◽  
The Stability ◽  
And Control

With the rapid development of flexible HVDC technology in China, the demand for the DC grid of new energy generation projects growth. This paper studies the topology of the DC grid photovoltaic converter, a topological scheme is proposed and detailed analysis of the topology of the work mode is presented. For the device extension problem of equipment used in high-voltage direct current power level, a connecting scheme based on modular IPOS program and a control strategy of uniform duty cycle are given. In this paper, the equivalent controlled source method for small-signal dynamic modeling is established, and the stability of the control scheme is analyzed using Bode diagram. Finally, a 10kW prototype platform topology programs is built and control strategies experimentally is verified. This paper has important reference value for the HVDC grid-connected research of new energy power generation and the research of small power scale AC-DC hybrid microgrid network.

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