摘要
针对地震模拟振动台三参量控制算法中存在超调量过大的问题,提出了离线时域修正算法:通过时域内微分方程求解得出超调量存在的原因,进而从直接消除暂态分量出发,以三角函数、傅里叶变换为工具,提出了任意输入下超调量的修正方法,仿真结果表明该方法大大降低了超调量,减小了在线计算量。同时,通过三参量在地震模拟振动台控制系统中的应用仿真得出:修正后的三参量在降低超调的同时未产生任何不利影响,能很好的应用于地震模拟振动台系统控制。
Time-domain off-line modification algorithm was proposed to reduce the overshoot of shaking table TVC Algorithm.The cause of overshoot was found by solving differential equations of TVC in time domain.Then,for the purpose of eliminating the transient component,the overshoot modification method was acquired for arbitrary input function using trigonometric function and Fourier transformation.The simulation results with MATLAB showed that not only the overshoot but also the computational complexity can be reduced greatly.At the same time,the simulation results of the shaking table control also indicated that the modified TVC can reduce the overshoot and have no adverse effect,it can be applied in shaking table system control very well.
出处
《振动与冲击》
EI
CSCD
北大核心
2010年第10期211-215,共5页
Journal of Vibration and Shock
基金
国家自然科学基金重大研究计划(90715010)
北京工业大学研究生科技基金资助课题(bcx-2009-033)
关键词
三参量控制
超调量
时域离线修正
地震模拟振动台
three-variable control(TVC)
overshoot
time-domain off-line modification
shaking table
