6.5的工具箱放到7.0里当然会出问题,怎么不直接装7.0的ident工具箱呢?我的就有:
help armax
ARMAX Computes the prediction error estimate of an ARMAX model.
M = ARMAX(Z,[na nb nc nk]) or M = ARMAX(Z,'na',na,'nb',nb,'nc',nc,'nk',nk)
M : returns the estimated model in an IDPOLY object format
along with estimated covariances and structure information.
For the exact format of M see also help IDPOLY.
Z : The estimation data in IDDATA object format. See help IDDATA
[na nb nc nk] are the orders and delays of the ARMAX model
A(q) y(t) = B(q) u(t-nk) + C(q) e(t)
If the data have several inputs, nb and nk are row vectors with
lengths equal to the number of input channels. If the data is a time
series (no input) an ARMA model A(q) y(t) = C(q) e(t) is built. Then nb
and nk should be omitted, i.e. enter [na nc].
An alternative syntax is M = ARMAX(Z,Mi), where
Mi is an estimated model or created by IDPOLY.
The minimization is then initialized at the parameters given in Mi.
By M = ARMAX(Z,nn,Property_1,Value_1, ...., Property_n,Value_n)
all properties associated with the model structure and the algorithm
can be affected. See HELP IDPOLY or IDPROPS ALGORITHM for a list of
Property/Value pairs.
Reference page in Help browser
doc armax
我的是版本本身就带的有,因此建议装个工具箱齐全的matlab版本。你也可以去网上搜搜看有没有7.0的供下载,然后再加进去 |