Now I've fixed bank hold mode. here are some parts you want me to post. I
made some test and error in Rollrate should be less than 0.5�
Bank hold mode holds bank at error 0.02�
As soon as I have fixed up pitch mode, you'll get the hole A/C for test
flight.
markus
<COMPONENT NAME="FCPC bank hold" TYPE="SWITCH">
<TEST LOGIC="DEFAULT" VALUE="0">
</TEST>
<TEST LOGIC="AND" VALUE="1">
fcs/aileron-cmd-norm <= 0.02
fcs/aileron-cmd-norm >= -0.02
</TEST>
</COMPONENT>
<COMPONENT NAME="FCPC bank hold to" TYPE="SWITCH">
<TEST LOGIC="AND" VALUE="attitude/roll-rad">
fcs/fcpc-bank-hold == 0
</TEST>
</COMPONENT>
<COMPONENT NAME="FCPC bank error" TYPE="SUMMER">
INPUT fcs/fcpc-bank-hold-to
INPUT -attitude/roll-rad
</COMPONENT>
<COMPONENT NAME="FCPC bank p" TYPE="PURE_GAIN">
INPUT fcs/fcpc-bank-error
GAIN 3.0
</COMPONENT>
<COMPONENT NAME="FCPC bank d" TYPE="LEAD_LAG_FILTER">
INPUT fcs/fcpc-bank-error
C1 0.05
C2 0.0
C3 0.0
C4 1.0
</COMPONENT>
<COMPONENT NAME="FCPC bank i" TYPE="INTEGRATOR">
INPUT fcs/fcpc-bank-error
C1 0.005
</COMPONENT>
<COMPONENT NAME="FCPC bank total" TYPE="SUMMER">
INPUT fcs/fcpc-bank-p
INPUT fcs/fcpc-bank-d
INPUT fcs/fcpc-bank-i
</COMPONENT>
<COMPONENT NAME="FCPC rr ss ordered grad" TYPE="PURE_GAIN">
INPUT fcs/aileron-cmd-norm
GAIN 10.0
</COMPONENT>
<COMPONENT NAME="FCPC rr ss ordered rad" TYPE="PURE_GAIN">
INPUT fcs/fcpc-rr-ss-ordered-grad
GAIN 0.01745329
</COMPONENT>
<COMPONENT NAME="FCPC rr ordered" TYPE="SWITCH">
<TEST LOGIC="DEFAULT" VALUE="fcs/fcpc-rr-ss-ordered-rad">
</TEST>
<TEST LOGIC="AND" VALUE="fcs/fcpc-bank-total">
fcs/fcpc-bank-hold == 1
</TEST>
</COMPONENT>
<COMPONENT NAME="FCPC rr error" TYPE="SUMMER">
INPUT fcs/fcpc-rr-ordered
INPUT -velocities/p-rad_sec
</COMPONENT>
<COMPONENT NAME="FCPC rr p" TYPE="PURE_GAIN">
INPUT fcs/fcpc-rr-error
GAIN 15.0
</COMPONENT>
<COMPONENT NAME="FCPC rr d" TYPE="LEAD_LAG_FILTER">
INPUT fcs/fcpc-rr-error
C1 0.25
C2 0.0
C3 0.0
C4 1.0
</COMPONENT>
<COMPONENT NAME="FCPC rr i" TYPE="INTEGRATOR">
INPUT fcs/fcpc-rr-error <!-- should be 0 if bank mode -->
C1 0.0005
</COMPONENT>
<COMPONENT NAME="FCPC rr total" TYPE="SUMMER">
INPUT fcs/fcpc-rr-p
INPUT fcs/fcpc-rr-d
INPUT fcs/fcpc-rr-i
</COMPONENT>
<COMPONENT NAME="Roll Trim Sum" TYPE="SUMMER">
INPUT fcs/fcpc-rr-total
INPUT fcs/roll-trim-cmd-norm
CLIPTO -1 1
</COMPONENT>
----- Original Message -----
From: "Jon S Berndt" <[EMAIL PROTECTED]>
To: "FlightGear developers discussions" <[EMAIL PROTECTED]>
Sent: Thursday, January 08, 2004 10:26 PM
Subject: Re: [Flightgear-devel] Autocoordination : Derivatives in FCS
> On Thu, 8 Jan 2004 20:41:00 +0100
> "Hof Markus" <[EMAIL PROTECTED]> wrote:
>
> >Other topic: Are there any suggestions about how to build a d/d(t) of
> >a property in fdm
> >
> >markus
>
> Markus:
>
> For JSBSim, you can use the flight control components. This is a
> quick reply, so maybe I have not thought this all the way out, yet.
> But, I suspect you can get a derivative control like this:
>
> In LaPlace space, a derivative is simply "s", right (it's been a long
> time since I've worked in LaPlace space - someone correct me if I am
> wrong, please). You can use the Tustin substitution to go from
> LaPlace space to the time domain (z domain), as we do with all the
> JSBSim flight control components (this is typical in industry, too).
> Have you seen the "Automatic Flight in JSBSim" document at the JSBSim
> web site? Go to www.jsbsim.org, select Documentation, then select that
> title. You will see the Lead-Lag and Second order filters described.
> Select the coefficients for these two filters to give you only an "s"
> in the numerator. For the lead-lag filter you would selectC1 = 1, C4
> = 1, and C2 and C3 would be 0. For the second order filter, C2 and C6
> would be 1 and C1, C3, C4, and C5 would be 0. Using these filters
> should give you the derivative of the input. Now, I have not used
> these filters for that purpose, yet. Initialization would be very
> important for them to work correctly. I'd have to test them out to see
> if that worked correctly.
>
> Jon
>
> _______________________________________________
> Flightgear-devel mailing list
> [EMAIL PROTECTED]
> http://mail.flightgear.org/mailman/listinfo/flightgear-devel
>
_______________________________________________
Flightgear-devel mailing list
[EMAIL PROTECTED]
http://mail.flightgear.org/mailman/listinfo/flightgear-devel
