The general structure and design method of ternary monostable multivibrator

2003 ◽  
Author(s):  
Ji-Zhong Shen ◽  
Zhi-Gang Zhu ◽  
Mo Zhu
Keyword(s):  
Design Method ◽  
General Structure ◽  
Monostable Multivibrator ◽  
Structure And Design

A General Structure and High-Performance Dual-Edge Triggered Level Converting Flip–Flop Based on BiCMOS

2020 ◽  
Vol 15 (1) ◽  
pp. 136-141
Author(s):  
Xianghong Zhao ◽  
Jieyu Zhao ◽  
WeiMing Cai
Keyword(s):  
Integrated Circuits ◽  
High Performance ◽  
Supply Voltage ◽  
Design Method ◽  
General Structure ◽  
Effective Solution ◽  
Digital Integrated Circuits ◽  
Flip Flop ◽  
Logic Functions ◽  
Structure And Design

Dual supply voltage scheme provides very effective solution to cut down power consumption in digital integrated circuits design, where level converting flip–flops (LCFF) are the key component circuits. In this paper, a new general structure and design method for dual-edge triggered LCFF based on BiCMOS is proposed, according to that PNP-PNP-DELCFF and NPN-NPN-DELCFF are designed. The experiments carried out by Hspice using TSMC 180 nm show proposed circuits have correct logic functions. Compared to counterparts, proposed PNP-PNP-DELCFF gains improvements of 6.7%, 96.0%, 86.0% and 28.5% in D-Q Delay, 50.0%, 16.0%, 12.6% and 10.8% in product of delay and power (PDP), respectively. NPN-NPN-DELCFF gains improvements of 5.1%, 93.0%, 83.2% and 26.5% in D-Q Delay, 39.7%, 7.9%, 5.0% and 3.4% in PDP, respectively. Furthermore, proposed circuits have better drive ability.

Neural Networks L2-Gain Controller Design for Nonlinear System

2011 ◽  
Vol 467-469 ◽  
pp. 1505-1510
Author(s):  
Dan Liu ◽  
Ni Hong Wang ◽  
Gui Ying Li
Keyword(s):  
Neural Network ◽  
Disturbance Rejection ◽  
Differential Inequality ◽  
Controller Design ◽  
Design Method ◽  
General Structure ◽  
The Neural Network ◽  
Network Weight ◽  
Finite Gain ◽  
L2 Gain

This paper proposes a new method that it uses the neural network to construct the solution of the Hamiltion-Jacobi inequality (HJ), and it carries on the optimization of the neural network weight using the genetic algorithm. This method causes the Lyapunov function to satisfy the HJ, avoides solving the HJ parital differential inequality, and overcomes the difficulty which the HJ parital differential inequality analysis. Beside this, it proposes a design method of a nonlinear state feedback L2-gain disturbance rejection controller based on HJ, and introduces general structure of L2-gain disturbance rejection controller in the form of neural network. The simulation demonstrates the design of controller is feasible and the closed-loop system ensures a finite gain between the disturbance and the output.

On Adaptable Design of Auto Assembly Machine Product Platform for Small Shaft and Sleeve Subassemblies

2013 ◽  
Vol 589-590 ◽  
pp. 675-679
Author(s):  
Zi Qiang Zhang ◽  
Zhi Feng Deng ◽  
Run Dian Li
Keyword(s):  
Product Design ◽  
Main Parameter ◽  
Design Method ◽  
General Structure ◽  
Structure Design ◽  
Product Platform ◽  
Adaptable Design ◽  
Parameterized Design ◽  
Design Cycle ◽  
Module Partition

Aiming at there are multifarious small shaft and sleeve subassemblies, in which shape and quantity of parts are different, the adaptable design concept was applied to the design of auto assembly machine product platform for small shaft and sleeve subassemblies. According to the general structure design and the module partition for the product platform, a parameterized design method that the number of stations is the main parameter was proposed. And the parameterized product platform, which can be suitable for the automatic assembling of multifarious small shaft and sleeve subassemblies and can be upgraded, was founded. Thus, the universality of the product platform is improved, and the product design cycle is shortened.

Design and Application of Mine-Used Underwater Explosion-Proof Robot

2014 ◽  
Vol 494-495 ◽  
pp. 1060-1063
Author(s):  
Wen Tao Lu ◽  
Guo Huan Lou ◽  
Shu Sheng Zhang ◽  
Chun Ming Yang
Keyword(s):  
Intelligent Control ◽  
Coal Mine ◽  
Energy Supply ◽  
Mechanical Design ◽  
Design Method ◽  
Underwater Explosion ◽  
Practical Application ◽  
Emergency Rescue ◽  
Composition Structure ◽  
Structure And Design

For the demand of coal mine flood accident emergency rescue, in this paper, a mine-used underwater explosion-proof robot is presented and the composition structure and design method of the robot are discussed in detail. This device combines mechanical design, underwater power plant, intelligent control, energy supply of mobile device and mine explosion-proof technology. It can cruise underwater with the changeable depth, orientation and speed. It can move flexibly and can collect underwater and overwater images. Practical application shows that this equipment is suitable for the emergency rescue and disaster relief work after the coal mine flood.

GENERAL STRUCTURE AND PRINCIPAL CONTENTS OF COMPOSITIONAL DESIGN METHOD

2014 ◽  
Vol 4 (3) ◽  
pp. 31-36
Author(s):  
Sergey Alekseevich MALAKHOV
Keyword(s):  
Theoretical Model ◽  
Design Method ◽  
General Structure ◽  
Professional Skills ◽  
Practical Activity ◽  
Common Process ◽  
Compositional Design

This article puts forward and analyzes the concept of a new design metho, that joins together into one common process the experience of two independent disciplines - composition and design. The system of suggested compositional design method is seen at the same time as a finished theoretical model, and as a process of acquiring relevant professional skills, i.e. the methods theory and its genesis in practical activity is the same phenomenon, that develops step by step from the level of corporal-sensuous modeling of shape - via invariant project codes - to conceptual expression and metaobject.

Design Method for Braiding Process and Structure Parameters of Three Dimensional Two-Step Tubular Braided Preform

2010 ◽  
Vol 150-151 ◽  
pp. 1613-1616
Author(s):  
Yan Gao ◽  
Jia Lu Li
Keyword(s):  
Fiber Volume Fraction ◽  
Volume Fraction ◽  
Design Method ◽  
General Structure ◽  
Three Dimensional ◽  
Structure Parameters ◽  
Fiber Volume ◽  
General Methodology ◽  
Properties Of Composites

The properties of composites reinforced by three dimensional braided preform are determined by braiding structure significantly. The main objective of this paper is to develop a general methodology for the determination of the design and analysis of three dimensional two-step braided tubular preform. The arrangement pattern of axial yarns with various finenesses is derived for the uniform braiding structure of preform, which offers a possibility for achieving preferable interior structures of braided tubular preforms. Then, the general structure parameters, including the interrelation between surface braiding angles and interior braiding angles and the fiber volume fraction, are investigated in some detail. The results derived from this paper can provide a useful method for the design of 3D two-step tubular braided preform.

Numerical investigation on sealing performance of non-contact finger seal with herringbone groove surface topography

2021 ◽  
Author(s):  
Lingping Chen ◽  
Yanchao Zhang ◽  
Yahui Cui ◽  
Bowen Zhi ◽  
Jie Wang ◽  
...  
Keyword(s):  
Working Conditions ◽  
Design Method ◽  
General Structure ◽  
Uniform Design ◽  
Bottom Surface ◽  
Groove Surface ◽  
Sealing Performance ◽  
Analysis Of Results ◽  
Internal Angle ◽  
Uniform Design Method

Abstract Since the last decade, the non-contact finger seal (NCFS) has attracted an increasing number of researchers due to its inherent flexibility and non-contact features, which can significantly improve the service life and reduce the leakage rate of the finger seals. In this paper, to enhance the NCFS sealing performance, lifting pads with twenty (20) different herringbone groove surface topographies are proposed based on the uniform design method. Numerical analysis is carried out based on the two-way fluid-structure interaction (FSI) method to better mimic the actual working conditions. The analysis of results using statistical tools reveals that the herringbone groove topographies placed on the bottom surface of low-pressure lifting pads can significantly improve the load-carrying capacity and sealing performance. In addition, the correlation analysis of the sealing performance and geometric parameters of the herringbone groove demonstrate that reducing the groove width or increasing the groove internal angle can improve the lifting and leakage capacities. Finally, the optimal herringbone groove and general structure (no groove) are comparatively analysed under variable working conditions, and the results show that the former has much better sealing performance.

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