基于环件偏移量和圆度误差的轧辊运动轨迹自适应控制

为解决环件轧制过程中出现的失稳、失圆等异常现象导致的轧制过程不稳定问题，提出了一种基于环件偏移量和圆度误差的轧辊运动轨迹自适应控制方法。首先构建环件轧制的有限元模型，计算环件偏移量和圆度误差。随后对有限元软件进行二次开发，设计四种轧辊运动控制器：基于偏移量的导向辊运动控制，基于圆度误差的芯辊运动控制，基于圆度误差的锥辊运动控制，以及基于偏移量和圆度误差的导向辊、芯辊和锥辊综合控制。进一步对比分析了不同控制方法对环件偏移量和圆度误差的优化效果。结果表明，轧辊综合控制方法能够克服单一控制方法的局限性，显著降低偏移量和圆度误差，提高环件轧制稳定性。
To solve the instability in ring rolling caused by buckling and loss of roundness, a roll motion trajectory adaptive control method based on ring offset and roundness error has been proposed. Firstly, a finite element model of ring rolling was established, and ring offset and roundness error were calculated. Then, four roll motion controllers were designed through secondary development of finite element software: guide roll motion control based on offset, mandrel motion control based on roundness error, axial roll motion control based on roundness error, and integrated control of guide roll, mandrel and axial roll motions based on offset and roundness error. Furthermore, the effects of different controllers on ring offset and roundness error were compared and analyzed. Results showed that the integrated control method could overcome the limitations of individual control strategies, significantly reduced both offset and roundness error, and thereby enhanced ring rolling stability.