MEASUREMENT OF THE STATE OF BOILED COCOONS BY UNWINDING TENSION OF SILK

摘要

PURPOSE:The unwinding tension is measured on the silk yarn under reeling to calculate the average value, variance, standard deviation, in order to collect the information on boiled degree of cocoons. CONSTITUTION:The signals of unwinding tension of cocoons under reeling from the strain gage X(t) are input to the amplifier A, then sent to the integrating circuit B where the average value mu is calculated, then to the subtracting circuit C, the full-wave rectifier circuit D, the square law circuit E and the integrating circuit F where the variance sigma2 is calculated, further to the square root circuit G to output the signal sigma, which means the standard deviation, to the terminal q. Then, the signal sigma is amplified by n-time amplitudes with the variable multiplier H to get the signal nsigma, then the signal is sent to the adding circuit I and the subtracting circuit J to form the signal of [X(t)-(mu+nsigma)]. Then, the resultant signal is converted into pulses by the pulse generating circuit K to give the unwinding signal.