Handout 15: Describing functions, Introduction Eric Feron March 31, 2004 General Philosophy General reponse of arbitrary nonlinear systems is somewhat complicated. We usually know the systems we work with. Work with finite families of 'most likely

Handout 16: Describing functions, More Eric Feron April 7, 2004 Continuing on the switch nonlinearity

Handout 10: Notch compensation Eric Feron March 5.2004 Notch Compensation goals: Kill nasty frequencies(eg resonant fre Canonical Notch element

Handout 12: Plants with right half-plane zeros Eric Feron March 15, 2004 The worst of all (but they exist)! Example: The Star Market vs. Home Depot dilemma Star Market cart: Casters mounted under cart front. used to steer cart rear deviation y from reference lane

Handout 8: Lead compensation Eric Feron March 1, 2004 Lead Compensation goals: Raise phase( gain) at high frequen cies while not touching low-frequency system's characteristics: Can extend bandwidth of system. Canonical lead element:

美国麻省理工大学：《航空系统的估计与控制》教学资源（讲义）extra

Handout 3: Gain and Phase Margins for unstable systems Eric Feron Feb9,2004 Gain and Phase Margins exist for all systems, including the unstable ones Examplel

Handout 5: Control System Design Principles Eric Feron Feb20,2004 The standard feedback loop Draw the feedback loop here Tracking requirements:

Handout 1: Bode plot rules reminder Eric Feron Feb4,2004 General: Bode plot is to plot magnitudes using logarithm scale, phases using log scales. Indeed:

一、异方差性的概念 二、异方差性的后果 三、异方差性的检验 四、异方差性的估计 五、案例