This paper examines modern methods for dynamic rotor balancing; describes a model for the balancing process of a rigid rotor on a super-resonance balancing machine utilizing solenoid actuators to simulate trial weights. In contem-porary practice, sub-resonance and super-resonance balancing machines are most commonly used for the dynamic balancing of rigid rotors. Super-resonance machines offer high precision and allow for balancing rotors over a wide range of speeds. The operation of super-resonance balancing machines employs the method of influence coefficients, which requires multiple runs of the rotor with trial weights to calculate these coefficients. In contrast, sub-resonance machines can determine rotor unbalance in a single run, reducing the time required for the technological balancing operation. However, the disadvantages of sub-resonance machines, such as their large size and weight, high cost, and stringent installation requirements, often outweigh the advantages of super-resonance balancing machines. Therefore, developing a rotor-balancing model on a super-resonance machine without trial weights is relevant. The aim of this research is to develop a model for the rotor balancing process on a super-resonance balancing machine without trial weights by using electromagnetic simulators of trial unbalance. To verify the developed mathematical model, an ex-perimental prototype of a balancing rig is constructed. The results of the experiments confirm the feasibility of replacing the trial weight with a periodic force generated by a system for electromagnetic simulation of trial unbalance.
dynamic balancing, single-plane balancing, unbalance, rotor dynamics
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