Various requirements are imposed to products of modern technical equipment which frequently are contradicting each other. For example, for maintenance of high durability of a detail, the material of which it is made should be sufficiently dense, but to reduce the friction coefficient of the same parts, the porous material with pores saturated with lubricant substance is required. To provide the reliable functioning of the details in conditions of inconsistent requirements to their properties is possible by drawing coatings with special functional characteristics on them. The plasma spraying of powder coatings is rather perspective among the various methods of obtaining coatings. The traditional methods of controlling of the coating properties are practically not suitable for automation of the technological process. We propose the adaptive monitoring system of porosity and hardness of the plasma coatings, adapted for carrying out the scientific research related to the formation of plasma coatings with predictable properties, as well as for process control, directed to obtain coatings with predictable properties. The adaptive system does not require the complete information on all monitored parameters of the quality as it provides their control on the basis of inter-related data formed by the measuring system, system of the expert estimations and by solving of statistical problems by Monte Carlo method. The adaptive control system is implemented on the basis of technical computing which contains a set of programs related to the logic network algorithms. The proposed adaptive control system is presented as the combined system of the process equipment for plasma spraying and the computer system directed on implementation of the algorithms for solving specific technological problems of plasma spraying. The method of the given control of the coating hardness and porosity is following: 1. The scales of the physical sizes interconnected with the mathematical dependences and with the sizes of coating porosity and hardness are appointed on the basis of the expert estimations based on studying of the physical laws of the process of the formation of plasma coatings. 2. The data of expert estimations are used for statistical model operation of hardness and porosity of the coating. The certain virtual cylinder of diameter Dv.c and height Н v.c. is allocated in the volume of the coating for these purposes. It is hypothesized that in the process of plasma spraying N vapor-deposited corpuscles will enter the virtual cylinder forming the first virtual layer, then the second, etc. to fill the cylinder a certain number of coating layers. It is assumed, that the statistical model operation is sufficient to consider the relatively small number of vapor-deposited corpuscles which form a small area of the coating (the virtual cylinder) with properties characteristic of the entire volume of the coating. The theoretical basis for the selection of the volume of the virtual cylinder and the number of its corpuscles of which it is formed is a selective method of the theory of probability. The basic idea of statistical model operation is that the process of formation of real structure of the coating is replaced by an equivalent structure (a statistical system), which averaged characteristics with some degree of accuracy coincide with the characteristics of the real coating. If the data of statistical tests and laboratory researches do not differ significantly the results of statistical tests are used as a method of controlling the hardness and porosity of the coating in the process of plasma spraying. If the results received by mathematical modelling and laboratory researches, statistically significantly differ, updating of the expert estimations participating in statistical model operation for reception of insignificant difference between the compared data is made. The research was carried out within the framework of the state assignments to high schools in terms of carrying out of the research work on 2012.