According to the characteristics of large rotating angle during the loading process for aircraft landing gear door,a four-bar linkage mechanical loading mechanism is *** the geometric structure,elastic deformation and...
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ISBN:
(纸本)9781509001668
According to the characteristics of large rotating angle during the loading process for aircraft landing gear door,a four-bar linkage mechanical loading mechanism is *** the geometric structure,elastic deformation and quality,the four-bar linkage is *** improve the dynamic accuracy of the system,a fuzzy fractional order PID controller is designed,and fuzzy self-tuning optimization is adopted to regulate *** simulation results show that the four-bar linkage mechanical loading mechanism meets the large rotation of the moving object load *** with traditional PID,fuzzy fractional order PID controller can improve the control performance significantly.
Quality prediction of casting billet in continuous casting process has great significance on ensuring the continuity of production and improving the quality of casting *** process parameters have influence on the qual...
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ISBN:
(纸本)9781509001668
Quality prediction of casting billet in continuous casting process has great significance on ensuring the continuity of production and improving the quality of casting *** process parameters have influence on the quality of casting billet in continuous casting process,so this paper proposes an intelligent prediction method of casting quality based on multiple process *** the analysis of the relationship between multiple process parameters and the casting quality,the casting quality prediction model based on least squares support vector machine(LSSVM) is *** an improved particle swarm optimization(i PSO) algorithm is used to optimize the parameters of the prediction *** the quality prediction of casting billet under different combinations of process parameters could be *** the continuous casting grade transition process,the proposed method in this paper is used to establish the prediction model of the intermixing *** results of the case prove the effectiveness of the proposed method.
advancedprocesscontrol (APC) is a processcontrol & optimization technology. A typical advancedprocesscontrol (APC): 1. Multi-variable - process variables interact with each other. 2. Model-predictive - Dynami...
ISBN:
(纸本)9781945541599
advancedprocesscontrol (APC) is a processcontrol & optimization technology. A typical advancedprocesscontrol (APC): 1. Multi-variable - process variables interact with each other. 2. Model-predictive - Dynamic models predict process behavior. 3. Constraint handling - control solution considers variable limits. 4. Optimized control - Standard optimization capabilities.
This paper takes published improvements in fabricator metrics that result from advancedprocesscontrol, and, applying an International SEMATECH cost model to the results, quantifies the expected economic impact. By c...
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ISBN:
(纸本)0819448494
This paper takes published improvements in fabricator metrics that result from advancedprocesscontrol, and, applying an International SEMATECH cost model to the results, quantifies the expected economic impact. By converting the improvements in factory metrics to dollars, they can be compared. The benefits are given by equipment type, and by factory benefit mechanism. The majority of these calculations are based on Run-to-Run control.
on the basis of analyzing and explaining the concept of workflow, this paper analyzes the open source workflow engine jBPM (Java Business process Management) from the perspectives of architecture, database table struc...
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ISBN:
(纸本)9781538645093
on the basis of analyzing and explaining the concept of workflow, this paper analyzes the open source workflow engine jBPM (Java Business process Management) from the perspectives of architecture, database table structure, authority management and so on. Combining the financial approval process of the enterprise, a prototype of financial approval management system is developed, and the main design ideas and key technologies to be realized are expounded in details. The trial application of the system shows that the jBPM workflow engine has obvious advantages in such aspects as business process customization, automatic management processcontrol, scalability and security. It can meet flexible and changeable needs of the business process, and does improve the efficiency of financial approval, which has guiding significance in engineering practices.
Based on the characteristics of nickel stir leaching production process of sulfuric acid in Yunnan Nickel Industry Company, the whole processautomation system is designed by the OMRON control system network including...
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ISBN:
(纸本)9783037853740
Based on the characteristics of nickel stir leaching production process of sulfuric acid in Yunnan Nickel Industry Company, the whole processautomation system is designed by the OMRON control system network including two layers of structures process management decision layer and processcontrol layer. In this paper the function, coordination mechanism and the control strategy of all subsystems are also discussed.
In view of the high requirements for valve control accuracy and stability in industrial processcontrol, Aiming at the high requirements for valve control accuracy and stability in industrial processcontrol, a valve ...
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ISBN:
(数字)9781665458641
ISBN:
(纸本)9781665458641
In view of the high requirements for valve control accuracy and stability in industrial processcontrol, Aiming at the high requirements for valve control accuracy and stability in industrial processcontrol, a valve opening control scheme based on variable universe fuzzy auto disturbance rejection is proposed. Use AMESim and Simulink for joint simulation. First, build the controlled object model in AMESim, and then import the established controlled object model into the Simulink module of the active disturbance rejection control system. The expansion factor is introduced to improve the fuzzy control performance. Through fuzzy control Set the parameters of auto disturbance rejection controller. The simulation results show that the variable universe fuzzy auto-disturbance rejection controller has strong anti-interference ability and good adaptability, can quickly and stably reach the preset control opening, and can achieve precise and stable control of the valve opening.
The paper evaluates the various factors critical to the selection of a particular manufacturing technology for a specific production process. The different organizational levels which select and implement the manufact...
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ISBN:
(纸本)0852966261
The paper evaluates the various factors critical to the selection of a particular manufacturing technology for a specific production process. The different organizational levels which select and implement the manufacturing strategy are also analyzed.
Planning the factory 2000, the factory of the future with its advancedautomation, needs considerable attention to detail so that the capital expenditure produces a facility which is right first time and will generate...
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ISBN:
(纸本)0852966261
Planning the factory 2000, the factory of the future with its advancedautomation, needs considerable attention to detail so that the capital expenditure produces a facility which is right first time and will generate wealth through jobs and profit. Many features have to be analyzed to design and plan the factory and the method proposed in this paper enables the layout of the site, the internals of the buildings and the configuration of equipment in process cells to be synthesized. It illustrates the decisions which are taken so that those from whom approval is sought can appreciate the design process. This shortens the approval time and can help in the acquisition of capital investment funds.
In order to improve the production performance, the permutation flowshop needs to be designed to reschedule the production release plan in realtime without work-in-process (WIP) explosion. To achieve this goal, this r...
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ISBN:
(数字)9781665458641
ISBN:
(纸本)9781665458641
In order to improve the production performance, the permutation flowshop needs to be designed to reschedule the production release plan in realtime without work-in-process (WIP) explosion. To achieve this goal, this research aims to construct the model predictive control for discrete-event by the Bernoulli's theory, real-time WIP in order to generate the optimized production release plan. Firstly, the state expression function and reliability model of the operator-based combined machines are defined. Secondly, the Bernoulli's theory is adopted to calculate the states of the machines and the buffers. Finally, the simulation results show that the model predictive control for discrete-event is feasible and effective. This model can provide theoretical support for WIP optimization and efficient operation of the actual permutation flowshop with re-entrant links.
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