Balancing machine with electric balancing of residual moments

摘要

1,083,733. Measuring dynamic unbalance electrically. LOSENHAUSENWERK DUSSELDORFER MASCHINENBAU A. G. Oct. 5, 1964, No. 40527/64. Heading G1N. The dynamic unbalance of a rotor/as measured at two bearing planes by electromagnetic transducers is converted to components in two balancing planes by means of a network which solves the two equations using the standard designations shown in Fig. 1, each of the terms in the equations being treated as a quantity between 1 and 10, multiplied by the appropriate power of 10. As shown (Fig. 3), the measured voltage representing P I is connected to terminals 1 and 3, and that representing P II is connected to terminals 2 and 4. The P I voltage at terminal 1 is fed through a decade multiplier switch 11 and a potentiometer 13 to an adding circuit, switch 11 being set to the appropriate power of 10 to bring the a/b ratio, which is set up on the slider of potentiometer 13 to between 1 and 10. The four decade switches 11, 21, 31, 41 are similarly set to reduce or amplify the different terms in the above equations by the appropriate power of 10, and the signals appearing at terminals 7 and 8, after the addition has been effected across resistors 6, represent P 1 and P 2 respectively, when multiplied by the appropriate power of 10. is Thus, if SPa/SP/ b = 0À5 and SPc/SP/ b = 150, the first equation Decade switch 11 is set to 10SP-3/SP and the slider of potentiometer 13 set to 5, decade switch 21 is set to 1 and the sliders of potentiometer 23 set to 1À5, decade switch 31 set to 10SP-2/SP, and the voltage at terminal 7 representing P 1 must be multiplied by 10SP2/SP.