ANALOG COMPUTER, SPECIALIZED FOR PROCESSING THE RESULTS OF MEASUREMENTS,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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General ideas underlying the design of special-purpose analog computers are set forth. A principle of simplified-to-suit-specified-accuracy equipment was used in the development of a special analog computer SAC for statistically processing the results of measurement of deformations of automobile tires. Three axial deformations measured by strain gages on a running tire and converted into voltages were recorded on magnetic tape. These measurements were applied to the SAC which calculated two principal deformations and two stresses. All 7 parameters were fed to a multichannel amplitude analyzer which determined the distributions of their maxima, minima, and spread over 1000 revolutions of the tire. The SAC comprises 15 operational amplifiers and one nonlinear unit its overall error is 3 percent. Each SAC unit has a gain of 250 at zero frequency and a reduced-to-grid zero-point drift of 3 mv for 30 min a passband for a 100-v sinusoidal signal is 65 kHz.
- Computer Hardware
- Surface Transportation and Equipment