Automation of Space Simulation/Thermal Vacuum Test Facilities - the Basis for an Efficient and Future-oriented Test Operation

摘要

For the future of space simulation testing cost efficiency and facility reliability is mandatory. Especially the operation of space simulation and thermal vacuum test facilities requires a high level of personnel involvement. Due to the 'around the clock' testing for days and weeks the cost saving potential of such kind of operation is significant. The implementation of automation systems is one prerequisite for the improvement of efficiency and reliability and is - in case of new facilities - meanwhile standard practice. However, already existing facilities based on elder control techniques require an extensive redesign of the control system in order to cope with the new technologies. During the past 5 years the Space Simulation Facility and three other Thermal Vacuum Test Facilities of IABG were modified such that all important facility sub-systems were equipped with Programmable Logic Controllers (PLC). Further a Windows NT based command and control system was installed enabling both, operation of the facilities from a central control room as well as from a local terminal directly at the facility. In parallel a new network based data acquisition system was developed which delivers the test data via the LAN to customer and operator workstations. The data acquisition system is linked to the command and control system such, that test data can be used for an automatic control of the test facility. Due to the implementation of the automation system the thermal vacuum test facilities can now be operated with significantly reduced personnel and with an improved reliability and quality. Further potential for efficiency improvements is identified on the customer side because data presentation and analysis must not necessarily be limited to the test site but can also take place outside, e.g. at the customer site. This will reduce the customer's personnel involvement during a test and therefore will result in further cost optimization. Currently IABG is deeply involved in studies for the realization of such data distribution systems.