Types of the state space of complex technical systems

Considered in the paper complex technical system consists of a set of technical objects. These objects are the elements of the system. An object is treated as an element of a system if it is characterized by a specified set of features. Technical object features can be divided into two groups: additive and constitutive. Additive features are independent from relations inside the system, but constitutive ones depend on it. System features resulted from additive features of its elements can be defined as a sum of features of particular elements of the system. Unfortunately, in case of constitutive features of the system this way of defining is not proper. So, to identify the system itself, it is necessary to determine the unique set of the system features. Considering complex technical systems, it was stated that a state of a system is defined by instantaneous values of cardinal features of the system. So, the state of a system can be expressed in their features' space. But the set of the cardinal features of the system depend on the considered issue. In the field of machines maintenance and operation the technical systems can be analysed for different points of view. Therefore, the state of the system can be described in different features' spaces. In the paper different types of the system features' spaces are introduced. Thanks to the defined spaces application it is possible to create coherent description of all types of processes which are executed in a technical system during operation and maintenance phase.