超高速涡轮增压器机芯平衡测试系统设计与实验研究

Accurate imbalance detection in turbocharger cores under ultra-high-speed operation is challenging. A high-pressure air-driven balancing test system was developed. The system architecture was built based on high-speed rotor dynamics. A universally adaptable rigid support structure was designed using balancing machine principles. Key parameters of the air-drive structure were optimized via simulation, and an auxiliary air-drive component was proposed. The constructed system underwent performance and imbalance identification tests. The results show that the system drives the core to a maximum balancing speed of 35 480 r/min, achieving a 91. 8% speed increase with the auxiliary component, enabling tests at working speeds. The rigid support accurately replicates the core' s vibration characteristics across all speeds. The imbalance identification error remains below 10% at the core' s working speed, verifying the system' s effectiveness and accuracy.