Мехатроника 1 Бөлім mechatronics
The indicator of structural and structural integration of J
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Мехатроника 1 том Баймухамедов М.Ф., Джаманбалин Қ.Қ.,Ақгул м.К.
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- Mechatronicity index J
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The indicator of structural and structural integration of J K is the ratio of the number of basic building blocks Ns in the mechatronic module to the sum of the numbers of basic structural blocks and additional ND constructs introduced to improve the quality of its work [9]: (3.3) Mechatronicity index J connects indicators of functional, functional-struc- tural and structural-constructive integration [13,15]: (3.4) If we consider mechatronic modules without additional constructive ele- ments ( N D = 0) and with the initial level of functional-structural integration, i.e. such that each block performs only one functional transformation, we get the maximum value of the mechatronic index: • for the motion module J max = 0.29; • for the mechatronic motion module J max = 0.43; • for the intelligent mechatronic module J max = 1. The mechatronics index J is greater than one and can have intelligent mechatronic modules with a higher level of functional-structural integration. If the number of structural blocks and, consequently, the number of basic constructive elements in the mechatronic module is less than the number of functional transformations, then the mechatronic coefficient becomes greater than one. When designing mechatronic modules, it is necessary to strive to increase the mechatronics index. Each mechatronic module has a certain level of work quality, which can be conditionally taken equal to one. However, it is not always sufficient to meet the requirements of the terms of reference. Therefore, an additional quality indicator Э is introduced, which shows the excess of the performance of the mechatronic module in the presence of additi- onal constructive elements with respect to them without them [9]: (3.5) The presence of additional structural elements leads to an improvement in the qualitative performance of the mechatronic module, but at the same time its weight and size parameters are increased, durability and reliability are reduced, and the cost increases. 198 Figure 3.4 Figure 3.4 shows the graphs of the change in the mechatronic index J and the index of the additional quality of Э , depending on the change in the number of additional N D structural elements for mechatronic modules of various types of functional integration. At the same time, the level of functional-structural integration for all mechatronic modules is the same and corresponds to the case when the number of applied structural blocks is equal to the number of functional transformations performed ( N S = N F ). We assume that the intersection point of the graphs J = f(N D ) and Э = f(N D ) corresponds to the optimal value of the number of additional constructional elements N D . Then for different types of mechatronic modules we get the number of additional constructive elements: • in the motion module N D can be 0 or 1; • in the mechatronic motion module N D can be 1 or 2; • in the intelligent mechatronic module N D = 7. If the number of building blocks becomes less than the number of functional transformations ( N S < N F ) then the graphs J = f ( N D ) and Э = f ( N D ) will be displaced (in Fig. 3.4 the graphs of the change in the mechatronicity and additional quality of the integrated intellectual mechatronic module N S = 6). In this case, the optimal number of additional constructive elements is 7. жүктеу/скачать 11,25 Mb. Достарыңызбен бөлісу:
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