Unbalance measurement device for determination of unbalance acco

Details Unbalance measurement device for determination of unbalance acco Unbalance measurement device for determination of unbalance acco

1983-07-12

1984-11-27

Gill, James J.

Measuring and testing

Rotor unbalance

Dynamic

G01M 108, G01M 122

Patent

active

044844743

ABSTRACT:
An unbalance measurement device is provided for a balancing machine for determining the unbalance of a rotor according to position and magnitude. The balancing machine has a drive motor, transducers, a spindle supporting the rotor to be balanced, and an increment disc fixed to the spindle. Filter circuitry for analog signals is provided for the purpose of reducing extraneous signals by means of a filter whose mid-frequency is controlled by a high control frequency. Due to this filtering, changes in the rotational frequency of the rotor to be balanced do not influence the determination of the position of the unbalance. In addition, in the case of correction in several planes, interference of the measurement in one plane caused by the preceding measurement in the other plane is prevented.

REFERENCES:
patent: 3478602 (1969-11-01), Tatum
patent: 4250555 (1981-02-01), Mitchell et al.

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