校正效果演示.ppt

文档介绍：Frequency (rad/sec)Phase (deg); Magnitude (dB)Bode Diagrams-50050100From: U(1)10-210-1100101102-180-160-140-120-100-80To: Y(1)-step Responses pensated and pensated Systemst pensated pensated system超前校正能使瞬态响应得到显著改善稳态精度的改变则很小高频躁声效应增强Frequency (rad/sec)Phase (deg); Magnitude (dB)Bode Diagrams-150-100-50050100From: U(1)10-210-1100101102103-300-250-200-150-100-50To: Y(1)-step Responses pensated and pensated Systemst pensated pensated system超前校正能使瞬态响应得到显著改善稳态精度的改变则很小高频躁声效应增强Frequency (rad/sec)Phase (deg); Magnitude (dB)Bode Diagrams-150-100-50050100From: U(1)10-410-310-210-1100101102-300-250-200-150-100-50To: Y(1)-step Responses pensated and pensated Systemst pensated pensated system滞后校正提高系统的平稳性但瞬态响应时间却随之增加滞后校正能抑制高频躁声的影响滞后校正可能产生条件稳定性问题Frequency (rad/sec)Phase (deg); Magnitude (dB)Bode Diagrams-150-100-50050100From: U(1)10-1100101102103104-400-300-200-1000To: Y(1)t SecOutputsUnit-step Responses of pensated -150-100-50050100150From: U(1)To: Y(1)t SecOutputsUnit-step Responses pensated : U(1)To: Y(1)Frequency (rad/sec)Phase (deg); Magnitude (dB)Bode Diagrams-100-50050100From: U(1)10-410-310-210-1100101102-300-250-200-150-100-50To: Y(1)