On Crossley's contribution to the development of graph based algorithms for the analysis of mechanisms and gear trains

Abstract

This paper celebrates a particular branch of Crossley's early work dedicated to Mechanism Science, which deals with a rigorous introduction of Graph Theory to the study of some fundamental and intrinsic properties of kinematic chains and mechanisms. Although such idea gave its main outcome in Type and Number Synthesis (which has been much better and extensively described in another paper of the present special issue) some other intriguing side effects appeared, later in Mechanism Science, which yielded several results, and are still in the center of research and industrial world interest, such as, to name but a few, the automatic generation of the equations governing kinematic, static force and dynamic analysis of mechanisms and geared trains, the power flow analysis, the computation of the efficiency and, finally, the never fully explored structure-to-function mapping, which the present contribution points out to be still a challenge in the field

Heading Homing Simulation System Based on Image Intelligent Recognition

“…We firstly obtain the channel line profile information based on analysis on the grayscale differences of images and then fit the channel line using B-spline curve to receive the recognition result. The algorithm framework is as shown in Figure 1 [10][11][12][13]. …”

“…Figure 3 is a schematic diagram of window, where I, i1…represent the regions in the window. The initial position of each window is located at the right end of each line's pixel, which moves to the left after algorithm and turns into Window' until the left end [13][14][15][16]. The algorithm procedures are as follows:…”

Design of Intelligent Transportation System Based on the Technology of Information and Communication Engineering

“…It is based on the measured road detection technology and traffic information data by means of monitoring equipment real-time access to a variety of road traffic flow, vehicle speed, traffic density and vehicle occupancy control system design and calculation of traffic information data. The traffic information data collection traffic detection system to obtain the local control system of the traffic management department or remote monitoring center computer system through appropriate communication techniques and related equipment and rational analysis, the processing, mainly on the basis of judgment, then as a control information and put forward the control scheme of [2][3][4][5]. Thus, the overall operation 182 of the road traffic control system's work efficiency and management level of the device depends on the detection system of traffic on the road traffic information detection ability and level of its detection technology.…”

Engineering Cost Evaluation Model Based on Multi Dimension Entropy and Intelligent Algorithm

“…G is also a rough variable after calculation and its mean value and dispersion are respectively ( 1 3 ) It can be learned from interval reliability analysis model [9][10][11][12][13] that, in case of…”