7,024 research outputs found

    Microprocessor control and networking for the amps breadboard

    Get PDF
    Future space missions will require more sophisticated power systems, implying higher costs and more extensive crew and ground support involvement. To decrease this human involvement, as well as to protect and most efficiently utilize this important resource, NASA has undertaken major efforts to promote progress in the design and development of autonomously managed power systems. Two areas being actively pursued are autonomous power system (APS) breadboards and knowledge-based expert system (KBES) applications. The former are viewed as a requirement for the timely development of the latter. Not only will they serve as final testbeds for the various KBES applications, but will play a major role in the knowledge engineering phase of their development. The current power system breadboard designs are of a distributed microprocessor nature. The distributed nature, plus the need to connect various external computer capabilities (i.e., conventional host computers and symbolic processors), places major emphasis on effective networking. The communications and networking technologies for the first power system breadboard/test facility are described

    Hardware math for the 6502 microprocessor

    Get PDF
    A floating-point arithmetic unit is described which is being used in the Ground Facility of Large Space Structures Control Verification (GF/LSSCV). The experiment uses two complete inertial measurement units and a set of three gimbal torquers in a closed loop to control the structural vibrations in a flexible test article (beam). A 6502 (8-bit) microprocessor controls four AMD 9511A floating-point arithmetic units to do all the computation in 20 milliseconds

    Eight microprocessor-based instrument data systems in the Galileo Orbiter spacecraft

    Get PDF
    Instrument data systems consist of a microprocessor, 3K bytes of Read Only Memory and 3K bytes of Random Access Memory. It interfaces with the spacecraft data bus through an isolated user interface with a direct memory access bus adaptor, and/or parallel data from instrument devices such as registers, buffers, analog to digital converters, multiplexers, and solid state sensors. These data systems support the spacecraft hardware and software communication protocol, decode and process instrument commands, generate continuous instrument operating modes, control the instrument mechanisms, acquire, process, format, and output instrument science data

    Microprogramming and microprocessors in the Netherlands

    Get PDF
    This paper gives a short survey of the activities in the field of microprocessors and microprogramming in the Netherlands. In the first part of it the activies within the Universities and non commercial institutes are mentioned. The second part deals with the industrial activity. The author is aware of the incompleteness of the survey. The reason for it is twofold. First; Some of the activies, especially in the industrie, have confidential aspects. The information may not yet appear in a paper like this. Second; He is not aware of all activities carried out in the field. A list of names of the institutes etcand eventual contactpersons is included. A literature list is not added, because not much literature is available now

    Mechatronics Education at Kettering University: Development of Learning- Specific Hardware and Software

    Get PDF
    A series of learning-specific electronic circuit boards and associated software has been developed to support mechatronics education in the Mechanical Engineering Department at Kettering University. The boards are designed to interface to the Toshiba TLCS-900H Microprocessor Trainer and Evaluation Board. The purpose of these boards is to provide mechanical engineering students of mechatronics with robust hardware that readily permits interfacing of sensors and actuators to microcontrollers used in mechatronic applications. Further, the boards feature signal conditioning circuits for use in conjunction with sensors, and driver circuits for operating high-current actuating devices. Supporting software has been written to permit ready use of the features of the hardware with only a functional knowledge of electronics, thus helping mechanical engineering students realize the full potential of mechatronics applications in an introductory course. Additionally, a stand-alone microprocessor board with flash memory has been designed and fabricated to permit students move out of the development laboratory and readily embed the electronics portion of a mechatronics device into their projects

    Motion of falling object

    Full text link
    A simple setup was assembled to study the motion of an object while it falls. The setup was used to determine the instantaneous velocity, terminal velocity and acceleration due to gravity. Also, since the whole project was done within $20 it can easily be popularized.Comment: 11 pages, 4 figur

    A technique for incorporating the NASA spacelab payload dedicated experiment processor software into the simulation system for the payload crew training complex

    Get PDF
    The feasibility of some off-the-shelf microprocessors and state-of-art software is assessed (1) as a development system for the principle investigator (pi) in the design of the experiment model, (2) as an example of available technology application for future PI's experiments, (3) as a system capable of being interactive in the PCTC's simulation of the dedicated experiment processor (DEP), preferably by bringing the PI's DEP software directly into the simulation model, (4) as a system having bus compatibility with host VAX simulation computers, (5) as a system readily interfaced with mock-up panels and information displays, and (6) as a functional system for post mission data analysis

    Continued Efforts in TI ARM M4 Microcontroller Curricula Developments and Assessments Between Three Different Institutions and Programs

    Get PDF
    This project is a continuation in efforts to upgrade the curricula in microcontroller related courses that are facing difficulties in the disappearing and lack technical supports in hardware and software of 68XXX and 80XXX microcontrollers. Through the study of a NSF supported project Transform the Innovated Design and Development of an Embedded Design Training System and Associated Support Curricula into a Commercial Available Product that interviewed 130 faculty/teachers/students across the U.S. has revealed on finding newly available microcontrollers is an urgent issue in the academic communities. Based on the supports on hardware and software and function libraries, the TI ARM M4 core is the choice for the join efforts in the new curriculum development and assessment between Old Dominion University, Farmingdale State College, Prairie View A&M University, and Ohio Northern University within the programs of CET, ECE, EET, and Tech Studies. The efforts were also a direct response to the industries suggestions and the needs of 32 bits ARM microcontroller’s skills from engineer and technology programs graduates to fill the job markets. This article presents a study and comparison that introduce a concept of collaborated efforts among different institutions and programs can work together to develop the comprehensive ARM curricula that fit the industry’s needs. These curricula development efforts are not only aim at on-campus face-to-face teaching and learning but also distance hands-on learning through delivering course modules using both synchronous and asynchronous. The assessment of this jointed efforts are part of the studies. Engineering and technology programs focus on both hands-on and mind-on design work and this article demonstrates the collaborated efforts in advanced curriculum development in the ARM microcontroller which is the key ingredient for success. Through the development efforts and online Learning Management System (LMS) designs that make the distance collaboration, delivery, and cyber-enabled learning possible. These efforts not only benefit the interested faculty/teachers in better teaching and learning, but also support the students who can learn more advanced technical concepts that are needed for emerging high-tech job skills. Highlights of the presentation will address the following: • Research and development of the virtual classrooms and open source service server. • Design and development of the supported material. • Implementation strategies and planning for the distance hands-on approach. • Assessment of the teaching and learning. • Recommendations of potential adoption of the development. • Continuous improvement of teaching and learning in academic community

    An airborne meteorological data collection system using satellite relay (ASDAR)

    Get PDF
    The National Aeronautics and Space Administration (NASA) has developed an airborne data acquisition and communication system for the National Oceanic and Atmospheric Administration (NOAA). This system known as ASDAR, the Aircraft to Satellite Data Relay, consists of a microprocessor based controller, time clock, transmitter and antenna. Together they acquire meteorological and position information from existing aircraft systems on B-747 aircraft, convert and format these, and transmit them to the ground via the GOES meteorological satellite series. The development and application of the ASDAR system is described with emphasis on unique features. Performance to date is exceptional, providing horizon-to-horizon coverage of aircraft flights. The data collected is of high quality and is considered a valuable addition to the data base from which NOAA generates its weather forecasts
    • …
    corecore