#### NAME

hencon - control the Henon system with the OGY control law

#### SYNOPSIS

**hencon** **-help**
or
**hencon** **[-points** *integer***]** **[-on1** *integer***]** **[-off** *integer***]**
**[-on2** *integer***]** **[-skip** *integer***]** **[-seed** *integer***]**
**[-plimit** *double***]** **[-A** *double***]** **[-B** *double***]** **[-gauss**
*double***]**

#### DESCRIPTION

Control the Henon system, x(t+1) = A - x(t)^2 + B * x(t -
1), with the OGY control law for arbitrary choices of A
and B. The control law is analytically calculated based
on the system parameters. The user can select times in
which control is turned on and off so that time-to-control
and transients can be observed. Gaussian noise can also
be injected into the system. The control timing options
are constrained to obey (0 <= on1 <= off <= on2 <=
points).

#### OPTIONS

**-points** *integer*
The length of the time series.
**-on1** *integer*
Where to turn control on.
**-off** *integer*
Where to turn control off.
**-on2** *integer*
Where to turn control on again.
**-skip** *integer*
Amount to skip initially.
**-seed** *integer*
Random seed.
**-plimit** *double*
Largest allowed size for p.
**-A** *double*
Value of the A parameter.
**-B** *double*
Value of the B parameter.
**-gauss** *double*
Magnitude of Gaussian noise.

#### BUGS

Few sanity checks are performed to make sure that any of
the options make sense.

#### AUTHOR

Copyright (c) 1997, Gary William Flake.
Permission granted for any use according to the standard
GNU ``copyleft'' agreement provided that the author's com-
ments are neither modified nor removed. No warranty is
given or implied.