Analysis of Paper Vertical Inverting Accuracy in the Packing Paper Production Line

2013 ◽  
Vol 312 ◽  
pp. 480-483
Author(s):  
Chao Cheng ◽  
Ji Fei Cai
Keyword(s):  
Production Line ◽  
General Equation ◽  
Constraint Equation ◽  
Accuracy Analysis ◽  
Drop Height ◽  
Deviation Angle ◽  
Paper Production ◽  
Projectile Motion ◽  
Precise Control ◽  
The Relationship

In order to realize precise control of the vertical inverting feeding of paper, the paper proposes the scheme to analyse the accuracy. Based on the geometric constraint relations of the feeding device, the position constraint equation of the device is established, together with the speed-acceleration formula; and the relationship between the paper inverting deviation angle and its drop height is obtained using the general equation of dynamics of the horizontal projectile motion as vertical inverting accuracy analysis of the device. The results of the study show that the precise control of the vertical inverting feeding of paper can be realized through the control of the angle.

Dynamic balance analysis of contamination control for hydraulic systems based on dynamic filtration ratio

2016 ◽  
Vol 68 (1) ◽  
pp. 45-51
Author(s):  
Guangying Ma ◽  
Shurong Ning ◽  
Yunlong Hu ◽  
jun Gao
Keyword(s):  
Hydraulic System ◽  
Dynamic Balance ◽  
Contamination Level ◽  
Hydraulic Systems ◽  
Level Control ◽  
Content Type ◽  
Contamination Control ◽  
Precise Control ◽  
Dynamic Filtration ◽  
The Relationship

Purpose – The aim of this study is to establish a dynamic model of the filtration ratio. For the problem that the measured value of the filtration ratio is far less than the theoretical value in the actual hydraulic filtering system, the paper aims to find the relationship between the filtration ratio and the parameters of the hydraulic systems, such as the contamination level and the dirt-holding quantity of the filter. Design/methodology/approach – The paper opted for the method of experimental analysis and simulation to determine the relationship between the filtration ratio and the parameters of the hydraulic system, and established a dynamic filtration ratio model. Findings – The paper provides a preliminary model of dynamic filtration ratio, and the model shows that the filtration ratio is exponentially related to the contamination level and the dirt-holding quantity. Different filters have different influence coefficients. The filtering capacity for a certain particle size and the contamination level control of the filter for different hydraulic systems can be judged according to the dynamic balance equation of hydraulic systems. Originality/value – The paper is useful in the selection of filters and in the precise control of the contamination level of the hydraulic system.

scholarly journals Study on process of chemical fiber filament automatic doffing system based on simulation platform and machine learning

2021 ◽  
Vol 16 ◽  
pp. 155892502110548
Author(s):  
Hongxin Zhu ◽  
Kun Zou ◽  
Wenlan Bao
Keyword(s):  
Neural Network ◽  
Linear Regression ◽  
Multiple Linear Regression ◽  
Production Line ◽  
Simulation Platform ◽  
Chemical Fiber ◽  
Production Lines ◽  
The Neural Network ◽  
Spss Software ◽  
The Relationship

In recent years, a large number of automatic equipment has been introduced into the chemical fiber filament doffing production line, but the related research on the fully automatic production line technology is not yet mature. At present, it is difficult to collect data due to test costs and confidentiality. This paper proposes to develop a simulation platform for a chemical fiber filament doffing production line, which enables us to effectively obtain data and quantitatively study the relationship between the number of manual interventions and other process parameters of the production line. Considering that the parameter research is a multi-factor problem, an orthogonal test was designed by using SPSS software and was carried out by using a simulation platform. The multiple linear regression (MLR) and the neural network optimized by genetic algorithm were adopted to fit the relationship between the number of manual interventions and other parameters of the production line. The SPSS software was applied to obtain the standardized coefficients of the multiple linear regression fitting and the neural network mean impact value (MIV) algorithm was applied to obtain the magnitude and direction of the impact of different parameters on the number of manual interventions. The above results provide important reference for the design of similar new production lines and for the improvement of old production lines.

scholarly journals Short-Term Tropical Cyclone Intensity Forecasting from Satellite Imagery Based on the Deviation Angle Variance Technique

2020 ◽  
Vol 35 (1) ◽  
pp. 285-298 ◽  
Author(s):  
Liang Hu ◽  
Elizabeth A. Ritchie ◽  
J. Scott Tyo
Keyword(s):  
Tropical Cyclone ◽  
Satellite Imagery ◽  
Forecast Model ◽  
Intensity Change ◽  
Deviation Angle ◽  
Short Term ◽  
Cyclone Intensity ◽  
The North ◽  
Intensity Forecast ◽  
The Relationship

Abstract The deviation angle variance (DAV) is a parameter that characterizes the level of organization of a cloud cluster compared with a perfectly axisymmetric tropical cyclone (TC) using satellite infrared (IR) imagery, and can be used to estimate the intensity of the TC. In this study, the DAV technique is further used to analyze the relationship between satellite imagery and TC future intensity over the North Atlantic basin. The results show that the DAV of the TC changes ahead of the TC intensity change, and this can be used to predict short-term TC intensity. The DAV-IR 24-h forecast is close to the National Hurricane Center (NHC) 24-h forecast, and the bias is lower than NHC and other methods during weakening periods. Furthermore, an improved TC intensity forecast is obtained by incorporating all four satellite bands. Using SST and TC latitude as the other two predictors in a linear regression model, the RMSE and MAE of the DAV 24-h forecast are 13.7 and 10.9 kt (1 kt ≈ 0.51 m s−1), respectively, and the skill space of the DAV is about 5.5% relative to the Statistical Hurricane Intensity Forecast model with inland decay (Decay-SHIFOR) during TC weakening periods. Considering the DAV is an independent intensity technique, it could potentially add value as a member of the suite of operational intensity forecast techniques, especially during TC weakening periods.

Gill Dimensions as a Function of Fish Size

1969 ◽  
Vol 26 (1) ◽  
pp. 165-170 ◽  
Author(s):  
B. S. Muir
Keyword(s):  
Body Weight ◽  
General Equation ◽  
Published Data ◽  
Fish Size ◽  
Secondary Lamellae ◽  
Fish Weight ◽  
Gill Area ◽  
The Relationship

The relationship between total gill area and body weight can be expressed as Y + aWb where "b" varies from about 0.8 to 0.9 for different species. The area for a 1-g fish ("a") ranges 22-fold for published data on different species. Expressed by the same general equation, the number of secondary lamellae per millimeter of filament ranges 4-fold for different species and decreases with increasing fish weight within each species by a power of about −0.1.

Analysis of Geometric Characteristic of Missile Vertical Launching System Guide Rail

2014 ◽  
Vol 620 ◽  
pp. 123-126
Author(s):  
Ji Chao Yang ◽  
Yun Yang
Keyword(s):  
Geometric Characteristic ◽  
Simulation Method ◽  
Assembly Model ◽  
Guide Rail ◽  
Deviation Angle ◽  
Mathematical Methods ◽  
Relationship Model ◽  
Mathematical Formulas ◽  
Dynamic Simulation Model ◽  
The Relationship

By analyzing the shipboard missile vertical launching system (VLS), we simplified the assembly model and reconstructed it with mathematical methods, established the clearance parameter and deviation angle mathematical formulas. In considering of the assembly errors of guide rail in missile vertical launcher system, we studied assembly clearance parameters effects on the system at first. And then established dynamic simulation model, researched the relationship between assembly clearance parameters and missile launching status. At last, used the above relationship model and conclusions, developed a prototype simulation method, and provided the foundation and guidance for design of missile vertical launching system.

Motion feasibility of a wheeled vehicle with a steering angle limit

Robotica ◽  
1994 ◽  
Vol 12 (3) ◽  
pp. 217-226 ◽  
Author(s):  
Yongji Wang ◽  
J.A. Linnett ◽  
J.W. Roberts
Keyword(s):  
Reference Point ◽  
Orientation Angle ◽  
Feasibility Problem ◽  
Deviation Angle ◽  
Steering Angle ◽  
Wheeled Vehicle ◽  
Straight Line ◽  
Steering Mechanism ◽  
Simulation Results ◽  
The Relationship

SUMMARYIn the problem of automatically controlling a wheeled vehicle so that a given reference point on the vehicle follows a prescribed path, several factors determine how the task can be accomplished; they are the shape of the path, the initial orientation angle, the steering angle limit and the position of the reference point on the vehicle. If the required steering angle exceeds the limit set by the steering mechanism or the required orientation angle is discontinuous at any point along the path, then the path cannot be followed. This paper investigates this motion feasibility problem, taking steering angle limit into consideration. First of all, we determine the dependence of the continuity of the orientation angle, steering angle and their derivatives on the continuity of the reference path and its derivatives, then discuss .the relationship between the steering angle limit and the feasible deviation angle intervals. Furthermore, we analyze in detail two typical motions, namely straight line motion and circular motion; some simulation results have been given based on a practical vehicle dimension.

scholarly journals Modeling of the Thermal Efficiency of a Whole Cement Clinker Calcination System and Its Application on a 5000 MT/D Production Line

Energies ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 5257
Author(s):  
Yanfei Yao ◽  
Songxiong Ding ◽  
Yanxin Chen
Keyword(s):  
Calcium Carbonate ◽  
Thermal Efficiency ◽  
Production Line ◽  
Cement Clinker ◽  
Specific Process ◽  
Excess Air ◽  
Positive Linear Correlation ◽  
Excess Air Coefficient ◽  
Secondary Air ◽  
The Relationship

This paper proposes that the scope of research should be extended to the whole clinker calcination system from its single device or specific process (i.e., its functional subunits) as conventionally conducted. Mass/heat flow and effective heat were first analyzed to obtain the thermal efficiencies of its subunits (φi); a thermal efficiency model of the whole system φQY was thus established by correlating the relationship between φi and φQY. The thermal efficiency model of the whole system showed that φi had a positive linear correlation with φQY; it was found that the thermal efficiency of the decomposition and clinker calcination unit (φDC) had the greatest weight on φQY, where a 1% increase in φDC led to a 1.73% increase in φQY—improving φDC was shown to be the most effective way to improve φQY. In this paper, the developed thermal efficiency model was applied to one 5000 MT/D production line. It was found that its φQY was only 61.70%—about 2.35% lower than a representative line; such decrease was caused by its low φDC and φP which, as disclosed by model, were derived from the low decomposition rate of calcium carbonate in preheated meal put into a calciner and the high excess air coefficient of secondary air. Controlled parameter optimization of this 5000 MT/D production line was then carried out. As a result, the φDC and φP of the production line were increased from 30.03% and 64.61% to 30.69% and 65.69%, respectively; the φQY increased from 61.70% to 62.55%; the clinker output of the production line increased from 5799 MT/D to 5968 MT/D; the heat consumption of clinker was reduced from 3286.98 kJ/kg·cl to 3252.41 kJ/kg·cl.

The Relationships between Project Management and Knowledge Management

2016 ◽  
pp. 2072-2094
Author(s):  
Cláudio Roberto Magalhães Pessoa ◽  
Fabiana Bigão Silva ◽  
Mônica Erichsen Nassif
Keyword(s):  
Knowledge Management ◽  
Project Management ◽  
Production Line ◽  
Competitive Advantages ◽  
Theoretical Approaches ◽  
New Strategy ◽  
Innovative Products ◽  
Administrative Change ◽  
Sustainable Competitive Advantages ◽  
The Relationship

All companies work nowadays at pursuit of innovation, because that will bring better results. The high demand for innovative products and services has led companies to a permanent state of change, either launching a new product or improving the current, enhancing or changing production line, or making administrative change. According to Davenport and Prusak (1998), organizations recognize that knowledge is the only source capable of generating sustainable competitive advantages. Gattoni (2000) corroborates the authors defending that enterprise knowledge management becomes a new strategy to be matured in terms of competitive gains in projects. Models and theoretical approaches show that the relationship between project management, and information and knowledge management generates significant improvements to organizations. This chapter makes a link of both themes aimed at significant improvements in the organization.

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