To division of no-load operation losses of the electric motor by a tangent line method
In work the computing aspect of a method of a tangent at division of losses of the electric motor is investigated. It is shown that the standard procedure results in rough results which error at the same time it is even not possible to estimate as computation process is absent. Data interpretation is carried out manually graphically. The received characteristics estimate" approximately". For upgrading of result it is offered to process empirical datas analytically. On an example the effectiveness of the classical regression analysis is shown. Square approximation of no-load characteristics of the electric motor is carried out by a method of least squares. The collateral solution of the equation of regression and the equation of a tangent gives the required power of mechanical losses. All computation process is automated on the basis of a package of the Statistics Toolbox expansion of a system of computer mathematics MATLAB. Results of calculations are given.