Parameter optimization of 3D models of centrifugal juicer with auto-balancer by minimization of steady vibroacceleration
DOI:
https://doi.org/10.15587/1729-4061.2014.20678Keywords:
centrifugal juicer, acceleration, auto-balancer, multifactorial experiment, functional quality, parameter optimizationAbstract
During the operation of electrical centrifugal juicers (Juicer) with cylindrical filter-sieve (sieve) a depressed weight is unevenly distributed over the sieve, which causing imbalance and vibration of the juicer.
In this paper in order to find the optimal parameters of the auto-balancer the technique, which takes into account the peculiarities of rotary machines with auto-balancer and using the theory of multivariate experiment, was proposed. It includes:
- the process of drafting the "black" box (choice of the objective function, the choice of control factors and their fields of changes in the dimensionless form);
- planning multifactorial experiment;
- research of the obtained results using programs STATISTICA_6 and MathCad (three regression models between the objective function and factors - linear, taking into account the effects of the mutual influence of the first order, quadratic, were investigated).
As a result, studies have shown that:
- auto-balancer reduces vibration acceleration on average 8.4-9.2 times;
- linear and quadratic models are effective in approximation, they give similar optimal points, but a linear function is less accurate in predicting the minimum steady acceleration.
The described technique can be considered as a standard in the optimization of parameters of auto-balancer in the rotor system.
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