Designing Method of Projector Type Vehicle Headlamp Reflector Based on the Variable Ellipse Profile

2011 ◽  
Author(s):  
Jinyong Zhang ◽  
Lifu Li ◽  
Wuzhi Zeng
Keyword(s):  
Designing Method

Proposal for Designing Method of Radio Transmission Range to Improve Both Power Saving and Communication Reachability Based on Target Problem

2016 ◽  
Vol E99.B (11) ◽  
pp. 2271-2279
Author(s):  
Ryo HAMAMOTO ◽  
Chisa TAKANO ◽  
Hiroyasu OBATA ◽  
Masaki AIDA ◽  
Kenji ISHIDA
Keyword(s):  
Power Saving ◽  
Transmission Range ◽  
Target Problem ◽  
Designing Method

Pulp pumping efficiency II – Designing of a pulp pump

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Qihua Zhang ◽  
Shun Kang ◽  
Zhiang Xie ◽  
Li Cao ◽  
Zhaoxu Yan ◽  
...  
Keyword(s):  
Optimization Procedure ◽  
Tip Clearance ◽  
Impeller Blade ◽  
Pumping System ◽  
Pumping Efficiency ◽  
Erosion Corrosion ◽  
Efficiency Increase ◽  
Set Up ◽  
Designing Method ◽  
Optimal Designing

Abstract Based on the loss model of pulp pump set up in the I part of this research, an efficient designing method is proposed by taking account of the influences of head reduction by small blade number, leakage loss via tip clearance, and erosion-corrosion wears in pumps separately. Further, a two-stage optimal designing approach was proposed to tackle the oversized design. The pump designing was performed by coupling with a CFD-based optimization procedure. An efficiency increase of near 10 % was achieved on the pump model validated in laboratory. It was proved that performance could be improved by increasing the impeller blade width and enlarging the impeller blade outlet angle. It was further shown that the erosion-corrosion wear in pulp pump was relatively lighter when compared to particle-impingement wear in slurry and sewage pump. Adoption of composite material showed potential in energy-saving in the pumping system.

A newly combined code-designing method of two-dimensional signature codes for OCDMA system

2009 ◽  
Vol 5 (5) ◽  
pp. 372-375 ◽  
Author(s):  
Chuan-qi Li ◽  
Qing Xia ◽  
Yuan Zhang ◽  
Yuan-yuan Zhou
Keyword(s):  
Two Dimensional ◽  
Designing Method

The Parametric Modeling and Contact Strength Analysis for the Wind Power Increasing Gear

2012 ◽  
Vol 522 ◽  
pp. 447-452
Author(s):  
Jing Luo ◽  
Mutellip Ahmat ◽  
Qiang Gao ◽  
Li Chao Ren
Keyword(s):  
Wind Power ◽  
Theoretical Basis ◽  
Optimization Design ◽  
3D Model ◽  
Parametric Modeling ◽  
Strength Analysis ◽  
Contact Strength ◽  
Set Up ◽  
Gear Contact ◽  
Designing Method

In this paper, the precise 3D model of the wind power increasing gear was set up by based on the parametric designing method of Pro/Program, then the contact strength of the gear was analyzed by the FEM and the Hertz theoretical value was calculated, the FEM and the Hertz results were contrasted in order to confirm the applicability of the numerical analysis in wind power gear contact analysis. Finally, the corresponding analysis conclusion was received.The researching results offered a effective theoretical basis for the optimization design and analysis of the wind increasing gear.

Structure Design of Large Travel One-Arm Bridge Type Z-Axis Nano-Positioning Stage

2015 ◽  
Vol 645-646 ◽  
pp. 1064-1071
Author(s):  
Wei Fan ◽  
Zhong Shen Li ◽  
Shao Yin Jiang
Keyword(s):  
Structure Design ◽  
System Structure ◽  
Scanning System ◽  
Positioning Stage ◽  
Ultra Precision ◽  
Bridge Type ◽  
Abbe Error ◽  
Designing Method ◽  
Scanning Motion ◽  
Control Accuracy

In some areas such as micro-mechanical, ultra-precision machining, nanotechnology, the high-precision positioning and very fine vertical scanning motion are needed urgently. Therefore, the Z-axis micro-displacement driving control technology has become the key technology in these areas. The piezoelectric ceramics actuator and stepper motor were integrated into hybrid linear actuator in Z-axis nanopositioning stage, and this can simplify the structure of the drive system. By calculating the gravity center of the vertical scanning system, and using single counterweight, a new one-arm bridge type structure was built. Appropriate tension and current sensors were also equipped in order to real-time monitor the drive status. It is feasible to balance the weight with this simplified system structure, and also guarantee the driving control accuracy of nanopositioning stage. Besides, in the structural design, the Abbe error can be reduced greatly by placing the stage center, grating ruler and displacement measurement centerline on the same line with grating reading head. The driving travel of nanopositioning stage is 150mm, and driving resolution is 1nm. The designing method introduced gives a scientific method and practical reference for the development of z-axis driving control system.

scholarly journals Robust State Estimation for Delayed Neural Networks with Stochastic Parameter Uncertainties

2015 ◽  
Vol 2015 ◽  
pp. 1-18 ◽  
Author(s):  
M. J. Park ◽  
O. M. Kwon ◽  
Ju H. Park ◽  
S. M. Lee ◽  
E. J. Cha
Keyword(s):  
Neural Networks ◽  
State Estimation ◽  
Linear Matrix ◽  
Parameter Uncertainties ◽  
Delayed Neural Networks ◽  
Stochastic Parameter ◽  
Mean And Variance ◽  
Delay Dependent ◽  
Designing Method ◽  
Dependent State

This paper considers the problem of delay-dependent state estimation for neural networks with time-varying delays and stochastic parameter uncertainties. It is assumed that the parameter uncertainties are affected by the environment which is changed with randomly real situation, and its stochastic information such as mean and variance is utilized in the proposed method. By constructing a newly augmented Lyapunov-Krasovskii functional, a designing method of estimator for neural networks is introduced with the framework of linear matrix inequalities (LMIs) and a neural networks model with stochastic parameter uncertainties which have not been introduced yet. Two numerical examples are given to show the improvements over the existing ones and the effectiveness of the proposed idea.

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