# The AMIL method

 These gates can be modelled directly in Hydraulic mode from SIC Version 4.0. It is better to use this new option. Nevertheless the previous option using a regulation module is still available.

For the AMIL gates, the variables D, d, HA and FILTRE must be given under the format (3(F8.2,1X),F8.2):

* D d HA FILTRE
PS= 220. .10 1.50 0.8

- D is the gate reference from the constructor list : 80, 90, 100, 110, 125, 140, 160, 180, 200, 220, 250, 280, 315, 355, 400, 450, 500, 560, 630, 710, 800,

- d is the decrement (equal to L/50 for AMIL, where L the width of the gate, Cf. Documentation of the constructor), given in meters (m),
- HA is the level of the gate rotation axis measured from the sill (in m).

- FILTER is the coefficient of the first order filter used to damp the fluctuations of the controlled water level. It should be in the range [0 .. 1]. The filter is stronger for higher coefficients. This filter is usually compulsory to get a stable gate.

Remark: The radius of the gate R is calculated from D and the constructor table (63, 63, 63, 63, 90, 90, 90, 125, 125, 125, 160, 160, 200, 200, 250, 250, 315, 315, 400, 400, 450),

Remark: D and R are given in the above tables in centimeters. In the software, these variables are converted into (m), when reading the .REG file. These converted variables (in meters) are the ones written on the .LST file. If the decrement d is not provided (i.e. equal to zero), we take d = 2% of D (d=0.05*D).

An example of regulation file (.REG) for the AMIL gate is given bellow. The calculation routine CAMIL for the AMIL gate is given in the following section.

* Controlleur 1

D=AMIL
* DUMin DUMax UMin UMax DT (’PU’,1X,4(F5.2,1X),F6.0)
PU= 0.00 0.50 0.00 2.00 0
U=AWS(X, 2415.0, 3)
Y=TYS(R, +0, +0)
* D d HA FILTER (3(F8.2,1X),F8.2)
PS= 220 .10 1.50 0.8