液压与气动2026，Vol.50Issue(6)：18-31,14.DOI:10.11832/j.issn.1000-4858.2026.06.003
阀控空气弹簧显式动力学建模与改进模糊PID控制
Explicit Dynamic Modeling and Improved Fuzzy PID Control for Valve-controlled Air Springs
摘要
Abstract
We investigate dynamic decoupling modeling and intelligent control for valve-controlled air spring height servo systems facing strong nonlinearity and dead-zone oscillations.An explicit analytical model based on displacement-mass dual regression eliminates implicit pressure algebraic loops in Simulink co-simulations.Frequency domain analysis reveals the stabilization mechanism of negative derivative gain under coupled flow integration and time delay,proving its necessity for suppressing low-frequency divergence.Guided by these findings,an improved fuzzy PID controller with asymmetric rules addresses proportional valve dead-zones and start-up delays.Simulation results indicate that the proposed strategy significantly suppresses limit cycle oscillations and achieves steady-state tracking of±0.005 mm under nominal loads.Moreover,the system maintains monotonic convergence under adverse perturbations,including a mass increase and deteriorated hardware parameters(dead-zone widening and time delay extension).关键词
空气弹簧/高度伺服系统/显式建模/负微分机理/模糊PIDKey words
air spring/height servo system/explicit modeling/negative derivative mechanism/fuzzy PID分类
机械制造引用本文复制引用
袁枭,朱清波,夏万,杨晟..阀控空气弹簧显式动力学建模与改进模糊PID控制[J].液压与气动,2026,50(6):18-31,14.基金项目
国家自然科学基金青年科学基金项目(52201389) （52201389）
国家自然科学基金面上项目(52471354) （52471354）
