Flight testing of small UAV's requires a small, lightweight computer system on board the aircraft. To obtain quality data and correctly implement control systems the system must have a hard real time operating system.Real Time Linux has been installed on a PC104 system and interfaced to the UAV's tranducers, actuators and radio control system. (more…)

Abstract

RTAI is a real-time kernel that permits to execute, on the same physical machine, both hard real-time applications and the Linux Operating System. RTAI is particularly useful when dealing with real-time processes that needs a guaranteed low response-time to interrupts. (more…)

Abstract

The Dynamic Systems Library (DSLib) is a newly developed interface tool for use between block-diagram modelling and realtime programing. DSLib is a set of C++ classes representing components of block-diagram modelling: blocks (functions, integrators, summing points…), inputs, outputs, schedulers, etc. (more…)

Abstract

Thanks to a constant research and development activity in the field of robotics and, more in general, of automation, reliable and relatively low-cost machines that can substitute or assist human operators in repetitive or dangerous tasks are now available. In robotics, this is particularly true for applications in structured environment, i.e. (more…)

Abstract

With the recent development of kernel patches for implementing kernel preemptability and high-resolution timers (and the acceptance of the first patch in the 2.5 development kernels), supporting real-time applications in Linux user-space is no more a dream. However, real-time applications must be run using the POSIX fixed priority scheduler, and we believe that this solution presents… (more…)

Abstract

This manual is not an in depth introduction to installing and running RTLinux/GPL but, as the name says, a kickstart only. It should guide you step by step to get you up and running on RTLinux/GPL quickly. Although this document describes the steps for RTLinux/GPL on a SuSE-8.0 system, steps will more or less be the same on a different distribution, and should still give you some… (more…)

Abstract

The availability of new in-home interconnection technologies, combined with the explosion of non PC-based devices, is driving the demand for a single device to connect in-home appliances to the public Internet. The residential gateway, as its name implies, is a central entry and control point at the home for all voice, video and data services, as well as the cornerstone for future… (more…)

Abstract

In Japan, many campanies who are building complex embedded systems such as cellular phones and degital televisions are considering to adopt embedded Linux for their products. Most of these companies have been adopted the ITRON real-time operating system as their operating systems, but the functionalities are not enough to build complex embedded systems because ITRON does not provide… (more…)

Portsystem 2000 AB has used embedded Linux to improve its system for controlling industrial doors and trucking docks. The company designs, manufactures and markets industrial doors and docking systems for commercial and industrial building installations. A complete docking system includes an industrial door, dock-leveller and inflatable seal around the vehicle. (more…)

Abstract

Many chemical processes require real-time control and supervision in order to operate them safely and profitably, while satisfying quality and environmental standards. As a means to comply with these requirements, it is common practice to use control software based on a proprietary operating system such as QNX, WxWorks, or MS Windows with real-time extensions. (more…)

Abstract

With the increase in available network bandwidth and reduction in network latency, more emphasis has been placed on End-Host QoS to provide quality of service guarantees for distributed real-time applications, such as video streaming servers, video conferencing applications, and VoIP applications. (more…)

Cherry Maritime Gaming AB has used embedded Linux, bluetooth, and GSM wireless links to develop a wireless system for remote monitoring and data retrieval from casino gaming devices. The game operator can access and download cash flow data from individual gaming machines, monitor the function, collect data for service and repair, and deliver alert signals to security personnel. (more…)

Abstract

This work presents an implementation of a digital PID (Proportional+ Integral+Differential) controller in a PC machine running RTAI. PID controllers are well known and have a wide range of applications in the control of analog systems such as servomotors. In order to achieve the desired performance the system output (axis position) is feed-back to the PID controller which generates… (more…)

Abstract

This paper presents an assessment of the performance of a real time controller using an IP network to link the controller, the sensor and the actuator. This control system is part of a anthropomorphic robot manipulator with two arms and a pan-and-tilt stereo vision head, totalizing 19 joints. (more…)

Mytron has used embedded Linux to add Internet/intranet capabilities and other improvements to its system for shop floor scheduling, management, and reporting. Mytron's Dynamic Process Analysis (DPA) system now enables company personnel to remotely access the latest production information and make effective management decisions based on real time data. (more…)