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Integration is an activity that constructs and orders the factors so that to form a high-effective, harmonious and whole activity. In the social integration, though each activity has its own characters, all these activities have common regulation or logical reason. As to the aspect of management, there has a significant meaning to sum up the regulation and logical reason in order to improve the validity...
The influence of thermohydrogen treatment on machinability of Ti600 alloy has been studied by turning a group of Ti600 alloy testing workpieces with different hydrogen content, measuring cutting force and surface roughness as well as observing chip morphology. Results of this experiment reveal that machinability of Ti600 alloy improves with increasing hydrogen content, and there is an optimal range...
Sensorless Brushless DC motors have been a research focus home and abroad, because their characteristics of small volume, high reliability, strong anti-interference and the ability to overcome inaccurate commutation caused by mechanical installation. This article will carry on a research on the operation principles and performance characteristics of sensorless DC motors and methods that terminal voltage...
Automatic steel pipe end-facing chamfering machine is the key equipment of the pipe production line and the automatic feed mechanism is an important part of it. In this paper, the ADAMS software is applied to the optimization design of the automatic feed mechanism. After optimization, the maximum lifting and propulsive forces are reduced by 59.9% and 67.7% respectively which saves energy significantly.
This paper describes the research and implementation of parameters system for small or medium-sized four-column hydraulic press design, which the whole process is valuable and practical. Firstly, the status quo of hydraulic design is analyzed. Secondly, based on the analysis of the design process about the upper beam in four-column hydraulic, the design process of various components are illustrated...
h type of anti-sliding pile as a new sliding bracing structure have many advantages, such as larger lateral rigidity, more anti-sliding force ability, more stably and easy constructed. However, the mechanism of h type of anti-sliding piles is very complex, and the action of soil around the double pile can not solve directly, few design theory and analysis method is mature. aiming at the deficiency...
Stiffness-internal force adjustment is a method which is applied in widening and reinforcement of old highway bridges. This method is that two new beams with larger rigidity are respectively built on both sides of the old bridge in order to make the old bridge unloading through the stiffness-internal force adjustment. This me- thod was successfully used for the reinforcement of Yingjing Bridge. Based...
A practical analysis procedure for estimation of the wind-induced root mean square acceleration response and the human comfort condition of tall buildings is presented in this paper. The modal wind-force time history curves and the corresponding power spectrum curves are first determined through analysis of the wind-pressure coefficient data obtained from the aerodynamic wind-tunnel model test and...
A new force control algorithm was proposed for parallel system. Through the analysis of the kinematics theory of multi-axis motion controller, a force control algorithm was put forward based on kinematics. Then a procedure of 2D parallel system as example was given. The result shows it is easy to realize and modify.
We investigate the possibility of finding satisfying assignments to Boolean formulae and testing validity of quantified Boolean formulae (QBF) asymptotically faster than a brute force search. Our first main result is a simple deterministic algorithm running in time 2n-Ω(n) for satisfiability of formulae of linear size in n, where n is the number of variables in the formula. This algorithm extends...
This work is a new proposal of neural synchronization, which is a communication of two Tree Parity Machines (TPMs) for agreement on a common secret key over a public channel. This can be achieved by two TPMs, which are trained on their mutual output, which can synchronize to a time dependent state of identical synaptic weight vectors. In the proposed TPMs random inputs are replaced with queries, which...
In this paper, we propose an improved active contour model to detect pedestrian in video sequences. Our method can detect pedestrian whose profiles are constantly changing when they are walking. First, we improve the internal energy computation by using the squares of the distance between average distance of all adjacent points in the contour curve and the control points, and construct local energy...
This paper introduces a concept for a reliable and miniaturized power control unit (PCU). With this PCU, an electro-mechanical actuator (EMA) is controlled. This EMA is intended to be used in a swashplateless helicopter control system. As this is a safety relevant part of the helicopter, the PCU needs to work reliably under challenging ambient and operating conditions. At the same time, the whole...
The motion of an over damped Brownian particle in a bistable potential is analyzed from the perspective of stochastic energetics. Without noise and with the increase of the input amplitude, the work done by the periodic force increases first and reach the maximum, then decreases sharply, and finally increases. Only when the work is more than the height of the barrier and equal to the barrier height...
A great number of techniques were already applied to the non-adversarial variation of the multiagent patrolling problem. Experiments suggest that, for general graphs, all those approaches are inferior to a strategy based on the travelling salesman problem (TSP), in which agents are distributed equidistantly along the TSP-cycle. This approach, however, is neither optimal nor scalable. In this article,...
Ceramics is an important engineering material. Its characteristics, such as brittleness and hardness, post difficulty when it is being processed with high precision. Grinding is one of the methods to finish parts with high accuracy. However, it is necessary to control the grinding force to achieve the desired surface quality of ceramics parts. In this paper, we present the study results of the influence...
We describe a system which simulates in realtime the auditory and haptic sensations of walking on different surfaces. The system is based on a pair of sandals enhanced with pressure sensors and actuators. The pressure sensors detect the interaction force during walking, and control several physically based synthesis algorithms, which drive both the auditory and haptic feedback. The different hardware...
The basic principle of fish propulsion with the presence of a solid boundary was studied. The problem of a two-dimensional potential flow over a flexible plate swimming adjacent to a planar wall is treated. This is solved by applying the method of images. The motion of the flexible plate consists of a progressive wave traveling along the body of the plate. The energy imparted to the fluid, the power...
Safe Community growing so fast within the country and around the world, its core sense is to build cross- sectional group, resource integration, full participation and continuous improvement. This article focuses on how to establish and perfect the basic emergency management system in the model of Safe Community: First of all, analyzed the situation and the shortage of our emergency management in...
Developed service industry is a symbol of economic prosperity in a region, while innovation is a necessary means to enhance services competitiveness. Based on the knowledge value chain theory, this paper explains the concept, features and formation of service innovation, constructs the model of service innovation, then takes a performance evaluation of service innovation.
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