This paper proposes a model of successful maintenance that can represent how maintainability of each software module changes as it ages. We found that some of the metrics, measured from 20 years old system, fit our model; i.e., values of those metrics seem to be proportional to the degree of maintainability. We described each metric’s critical line – a value that can be used for deciding whethe...

Virtually any soware dependent organization has a vital interest in reducing its spending for sowaremaintenance activities. In addition to financial savings, formany organizations, the timeneeded to complete a soware maintenance task largely determines their ability to adapt their business processes to changing market situations or to implement innovative products and services. With the pres...

Abstract HIL(Hardware in the loop) simulation of UAV(Unmanned Aerial Vehicle) plays an important role flight control sysrtem development and algorithm verification. Taking open source system Pixhawk as research object, this paper establishes a HIL based on NI(National Instrument) hardware platform. The dynamic model kinematic are modeled through Simulink, online management is realized Veristand...

The development of modern accelerator control systems has taken advantage of the possibility to use standard architecture designs based on the experience gained in industrial applications. Communication buses, board formats, operating systems, network protocols and operator interface software are the main elements of this new approach. In this paper we will discuss the way to apply this method ...

Real time data acquisition and logging system allow real time local and remote data acquisition and logging involve in industrial processes. The application runs in a PC with a web server. The interaction with physical quantities to be measured is performing with specific hardware or PC standard interfaces such as the serial port or USB, or by LAN. Terminals include web database and ADC that ac...