Open Information and Computer Integrated Technologies

The design of equipment overload protection in an aircraft air-conditioning unit requires the use of sufficiently effective methods for analyzing the vibration characteristics of the suspension, as well as the development of an appropriate synthesis method for the specific task. To solve the problem applied the adaptive hybrid optimization method. The object of optimization is the design of the suspension of the air conditioning unit with an asymmetrical distribution of masses and arrangement of joints. Joints are the attachment points in the form of shock absorbers and bellows for joining with pipes. Block is considered solid. Links will be highlighted as optimized elements. The aim of the work is to improve the method of optimizing the parameters of shock absorbers, which provide protection from vibration and operating shock loads. The proposed optimization method uses a number of methods that are called hybridients. Sets the criterion by which the most effective hybridients are selected. This criterion includes information that characterizes a changing situation; namely, signs of the structure and metric parameters of the space where the search is carried out; the prehistory of the computational process by which the possible continuation is established; the nature of the system of functions that determine the problem being solved. Adaptive control is introduced, which carries out the getting of decision vectors, search directions and search steps, respectively, the changing situation. Since it is possible to effectively minimize mass only with joint minimization of overload which is the parameter, to the boundary of which the solution search process goes, it is natural to use multi-criteria optimization. In this case, it is at the same time optimizing mass and overload. Restrictions are imposed on the structural dimensions and strength of the shock absorbers. As a result of the optimization, the weight of the suspension elements and the overload acting on the suspended block are reduced. The limits to which mass and overload can be reduced are determined.

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