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	Two-step method for identifying physical parameters of systems with dead zone nonlinearity
	Cao Xueqi ; Lu Qiuhai
	2010-05-07 ; 2010-05-07
关键词	Theoretical or Mathematical/ approximation theory damping Legendre polynomials parameter estimation/ physical parameter identification dead zone nonlinearity quadratic approximation two-step method direct parameter estimation method damping Legendre polynomial coefficient noisy acceleration excitation signal/ A0260 Numerical approximation and analysis B0290F Interpolation and function approximation (numerical analysis) C4130 Interpolation and function approximation (numerical analysis) E0210L Numerical analysis E0210A Algebra
中文摘要	The best quadratic approximation by Legendre polynomials was used to develop a two-step method to identify systems with nonsymmetrical dead zone nonlinearities. The nonsymmetrical dead zone restoring force was approximated using the Legendre polynomial with the direct parameter estimation (DPE) method used to obtain the system mass, damping, and Legendre polynomial coefficients. The dead zone parameters were then estimated based on the relationship between the coefficients of the best quadratic approximation by the Legendre polynomial and the dead zone parameters. Simulation results show that the method satisfactorily estimates the dead zone widths and slopes with only noisy acceleration and excitation signals available.
语种	中文 ; 中文
出版者	Tsinghua University Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/16263]
专题	清华大学
推荐引用方式 GB/T 7714	Cao Xueqi,Lu Qiuhai. Two-step method for identifying physical parameters of systems with dead zone nonlinearity[J],2010, 2010.
APA	Cao Xueqi,&Lu Qiuhai.(2010).Two-step method for identifying physical parameters of systems with dead zone nonlinearity..
MLA	Cao Xueqi,et al."Two-step method for identifying physical parameters of systems with dead zone nonlinearity".(2010).

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