PROCEDURE MEASURING SPEED OF LINEAR DISPLACEMENT OF OBJECT Russian patent published in 2003 - IPC

FIELD: measuring technology, measurement of speed of linear displacement of objects over specified trajectory. SUBSTANCE: procedure measuring speed of linear displacement of objects is based on use of position pickups placed along trajectory of movement, on preliminary formation and storage of reference function as ratio of dependencies of output voltages of two adjacent position pickups on coordinate of location of object, on measurement of present values of voltages of these pickups in process of movement of object, on determination of present function of relation of these voltages, on comparison of values of reference and present functions, on determination and storage of time moments t_i of equality of values of present function to specified values of reference function, on determination of values of coordinate X_i of location of object by reference function, on their assignment as recording points Δt_i = t_i-t_i-1 corresponding to above-mentioned moments, on computation of time moments Δt_i = t_i-t_i-1 of passage by object of distance Δx_i between two adjacent recording points X_i-1 and X_i and on determination of values of average speed across trajectory interval Δx_i by formula where Δx_i = X_i-X_i-1 and Δt_i are correspondingly trajectory interval and time interval between recording moments t₁ and t_i-1; i=1,2,...,N-1; N being number of recording points. While setting recording coordinates X_i with spacing Δx trajectory interval Δx₁ between first and second recording moments corresponding to coordinates X₂ and X₁ of location of object is found by formula and trajectory intervals Δx_i between following recording moments are determined by formula i= 2, ...,N-1 where σ_м1 is mean square deviation of methodical error across first trajectory interval between adjacent recording points of object; i=2,3,..., N-1 is law of change of relation of mean square deviations of methodical error σ_мi+1 across (i+1)-м and σ_мi across i-th trajectory interval between two adjacent recording points of object; σ_x is mean square deviation of instrumental error of giving recording coordinates of object; σ_t is mean square deviation of instrumental measurement error of time interval Δt; Δt_i-1 is time of passage by object across trajectory interval Δx_i-1 between two adjacent recording points that comes before trajectory interval Δx_i, across which present value of speed V_i. is measured. EFFECT: increased accuracy of measurement of speed thanks to formation of conditions resulting in minimization of sum of methodical and instrumental components of error of measurement of speed. 3 dwg