N ov 2 00 1 for differential equations with r parameters , 2 r + 1 experiments are enough for identification

نویسنده

  • E. D. Sontag
چکیده

for differential equations with r parameters, 2r + 1 experiments are enough for identification Abstract Given a set of differential equations whose description involves unknown parameters, such as reaction constants in chemical kinetics, and supposing that one may at any time measure the values of some of the variables and possibly apply external inputs to help excite the system, how many experiments are sufficient in order to obtain all the information that is potentially available about the parameters? This paper shows that the best possible answer (assuming exact measurements) is 2r+1 experiments, where r is the number of parameters.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

For Differential Equations with r Parameters, 2 r +1 Experiments Are Enough for Identification

Given a set of differential equations whose description involves unknown parameters, such as reaction constants in chemical kinetics, and supposing that one may at any time measure the values of some of the variables and possibly choose external inputs to help excite the system, how many experiments are sufficient in order to obtain all the information that is potentially available about the pa...

متن کامل

ar X iv : g r - qc / 0 21 10 63 v 1 1 8 N ov 2 00 2 Existence of CMC and constant areal time foliations in T 2 symmetric spacetimes with Vlasov matter

The global structure of solutions of the Einstein equations coupled to the Vlasov equation is investigated in the presence of a twodimensional symmetry group. It is shown that there exist global CMC and areal time foliations. The proof is based on long-time existence theorems for the partial differential equations resulting from the EinsteinVlasov system when conformal or areal coordinates are ...

متن کامل

N ov 2 00 1 Mackey - Glass type delay differential equations near the boundary of absolute stability

For equations x(t) = −x(t) + ζf(x(t − h)), x ∈ R, f (0) = −1, ζ > 0, with C-nonlinearity f which has negative Schwarzian derivative and satisfies xf(x) < 0 for x 6= 0, we prove convergence of all solutions to zero when both ζ − 1 > 0 and h(ζ − 1)1/8 are less than some constant (independent on h, ζ). This result gives additional insight to the conjecture about the equivalence between local and g...

متن کامل

N ov 2 00 6 Trees and asymptotic developments for fractional stochastic differential equations

In this paper we consider a n-dimensional stochastic differential equation driven by a fractional Brownian motion with Hurst parameter H > 1/3. After solving this equation in a rather elementary way, following the approach of [10], we show how to obtain an expansion for E[f (X t)] in terms of t, where X denotes the solution to the SDE and f : R n → R is a regular function. With respect to [2], ...

متن کامل

1 5 N ov 2 00 7 Global regularity for the 3 D Navier - Stokes and the 3 D Euler equations

We prove the global regularity for both of the 3D Navier-Stokes equations and the 3D Euler equations on R for initial data v0 ∈ H (R). 1 Main Result We are concerned on the following Navier-Stokes equations(Euler equations for ν = 0) describing the homogeneous incompressible fluid flows in R. (NS)ν 

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2001