抄録
This paper proposes an efficient environment to develop plant control software (PCS) that controls the space plants for satellites or space stations. Generally, PCSs for space plants have been individually developed because each plant operates in different way and have strict restrictions on types, performances and admeasurements of the hardware to be used. Because of this individual development, the qualities of PCSs heavily depend on the developers’ abilities and experiences, and the development period tends to get longer. To solve this problem, we propose an efficient environment that make possible to develop high quality PCSs (1) by developing software components based on domain analyses of PCSs, and (2) by conveying design information accurately throughout the development processes. We have developed a prototype of this environment and applied to the actual developments of PCSs. As a result, we are able to convey precise design information throughout the development processes and have succeeded to develop PCSs that are fully conformable to our requirements. We are also able to predict the program size and the processing time of the PCSs within 10[%] errors at the initial phase of development. Moreover, we have developed most parts of the PCSs using software components. The reuse rate of software components is 65.5[%], and development time is cut down to 42.1[%] in comparison with the developments from scratch.
