application-note · English
Technical Information Series No. 3: Double Integral (Calculation of Volume of Cone)
This application note demonstrates the use of a Hitachi analog-hybrid computer to evaluate a double integral for calculating the volume of a cone using multiple time axes. The computation slices the cone into N thin cylindrical sections (N=250 for the calculation, N=25 for reference), summing the cross-sectional areas iteratively; results are displayed via pen recorder and pattern display on oscilloscope showing the three-dimensional cone surface. Computing elements required include dual DC amplifiers (DA-151/DA-151A), dual integrators (IN-151/IN-153), potentiometer panels (PT-251/PT-151), voltage comparators (CP-151/CP-152/CP-153), and a square function generator (FG-154A).
double integralvolume of conepattern displaymultiple time axes