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Hydraulic and brake system improvements

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- loss of braking if no hydraulic pressure;
- code restyling;
This commit is contained in:
vezza 2020-11-30 00:08:21 +01:00
parent c9d13ca14b
commit 879deba025
4 changed files with 62 additions and 26 deletions
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2
Models/FlightDeck/a320.flightdeck.xml
View file

@ -428,7 +428,7 @@
<animation>
<type>rotate</type>
<object-name>brakes_accum_psi</object-name>
<property>systems/hydraulic/brakes/accumulator-pressure-psi</property>
<property>systems/hydraulic/yellow-accumulator-psi</property>
<interpolation>
<entry><ind>0</ind><dep>0</dep></entry>
<entry><ind>700</ind><dep>-20</dep></entry>

42
Nasal/Systems/hydraulics.nas
View file

@ -7,7 +7,7 @@ var rcont = 0;
var HYD = {
Brakes: {
accumPressPsi: props.globals.initNode("/systems/hydraulic/brakes/accumulator-pressure-psi", 0, "INT"),
accumPressPsi: props.globals.initNode("/systems/hydraulic/yellow-accumulator-psi-cmd", 0, "INT"),
leftPressPsi: props.globals.initNode("/systems/hydraulic/brakes/pressure-left-psi", 0, "INT"),
rightPressPsi: props.globals.initNode("/systems/hydraulic/brakes/pressure-right-psi", 0, "INT"),
askidSw: props.globals.initNode("/systems/hydraulic/brakes/askidnwssw", 1, "BOOL"),
@ -91,9 +91,6 @@ var HYD = {
} else {
me.Brakes.askidSw.setBoolValue(0); #false
}
if (me.Psi.yellow.getValue() > 0 and me.Brakes.accumPressPsi.getValue() < 3000 and me.Psi.yellow.getValue() > me.Brakes.accumPressPsi.getValue()) {
me.Brakes.accumPressPsi.setValue(me.Brakes.accumPressPsi.getValue() + 50);
}
# Decrease accumPressPsi when green and yellow hydraulic's aren't pressurized
if (me.Brakes.leftbrake.getValue() > 0 or me.Brakes.mode.getValue() == 0) {
@ -106,13 +103,11 @@ var HYD = {
} else {
rcont = 0;
}
if ((me.Psi.green.getValue() == 0) and (me.Psi.yellow.getValue() == 0) and (me.Brakes.accumPressPsi.getValue()) > 0) {
if (me.Psi.yellow.getValue() < me.Brakes.accumPressPsi.getValue() and me.Brakes.accumPressPsi.getValue() > 0) {
if (lcont == 1) {
#me.Brakes.accumPressPsi.setValue(me.Brakes.accumPressPsi.getValue() - (35 * me.Brakes.leftbrake.getValue()));
me.Brakes.accumPressPsi.setValue(me.Brakes.accumPressPsi.getValue() - 200);
}
if (rcont == 1) {
#me.Brakes.accumPressPsi.setValue(me.Brakes.accumPressPsi.getValue() - (35 * me.Brakes.leftbrake.getValue()));
me.Brakes.accumPressPsi.setValue(me.Brakes.accumPressPsi.getValue() - 200);
}
if (me.Brakes.accumPressPsi.getValue() < 0) {
@ -124,52 +119,63 @@ var HYD = {
if (me.Brakes.mode.getValue() == 1 or (me.Brakes.mode.getValue() == 2 and me.Psi.green.getValue() >= 2500)) {
# Normal braking - Green OK
if (me.Brakes.leftbrake.getValue() > 0) {
me.Brakes.leftPressPsi.setValue(props.globals.getValue("/systems/hydraulic/green-psi-ptu"));
me.Brakes.leftPressPsi.setValue(me.Psi.green.getValue() * pts.Fdm.JSBsim.Fcs.brake[0].getValue());
} else {
me.Brakes.leftPressPsi.setValue(0);
}
if (me.Brakes.rightbrake.getValue() > 0) {
me.Brakes.rightPressPsi.setValue(props.globals.getValue("/systems/hydraulic/green-psi-ptu"));
me.Brakes.rightPressPsi.setValue(me.Psi.green.getValue() * pts.Fdm.JSBsim.Fcs.brake[1].getValue());
} else {
me.Brakes.rightPressPsi.setValue(0);
}
} else {
if ((me.Brakes.mode.getValue() == 2 and me.Psi.green.getValue() < 2500) or me.Brakes.mode.getValue() == 0) {
# Alternate Braking (Yellow OK + Antiskid ON + electric OK) - missing condition: BSCU OK-KO
if (me.Psi.yellow.getValue() >= 2500 and me.Brakes.askidSw.getValue() and props.globals.getValue("/systems/electrical/serviceable")) {
if (me.Psi.yellow.getValue() >= 2500 and me.Brakes.askidSw.getValue() and (systems.ELEC.Bus.dc1.getValue() >= 24 or systems.ELEC.Bus.dc2.getValue() >= 24 or systems.ELEC.Bus.dcess.getValue() >= 24)) {
if (me.Brakes.leftbrake.getValue() > 0 or me.Brakes.mode.getValue() == 0) {
me.Brakes.leftPressPsi.setValue(props.globals.getValue("/systems/hydraulic/yellow-psi-ptu"));
me.Brakes.leftPressPsi.setValue(me.Psi.yellow.getValue() * pts.Fdm.JSBsim.Fcs.brake[0].getValue());
} else {
me.Brakes.leftPressPsi.setValue(0);
}
if (me.Brakes.rightbrake.getValue() > 0 or me.Brakes.mode.getValue() == 0) {
me.Brakes.rightPressPsi.setValue(props.globals.getValue("/systems/hydraulic/yellow-psi-ptu"));
me.Brakes.rightPressPsi.setValue(me.Psi.yellow.getValue() * pts.Fdm.JSBsim.Fcs.brake[1].getValue());
} else {
me.Brakes.rightPressPsi.setValue(0);
}
} else {
# Alternate Braking (Yellow OK + Antiskid OFF + electric OK) - missing condition: BSCU OK-KO
if (me.Psi.yellow.getValue() >= 2500 and !me.Brakes.askidSw.getValue() and props.globals.getValue("/systems/electrical/serviceable")) {
if (me.Psi.yellow.getValue() >= 2500 and !me.Brakes.askidSw.getValue() and (systems.ELEC.Bus.dc1.getValue() >= 24 or systems.ELEC.Bus.dc2.getValue() >= 24 or systems.ELEC.Bus.dcess.getValue() >= 24)) {
if (me.Brakes.leftbrake.getValue() > 0 or me.Brakes.mode.getValue() == 0) {
me.Brakes.leftPressPsi.setValue(1000);
me.Brakes.leftPressPsi.setValue(1000 * pts.Fdm.JSBsim.Fcs.brake[0].getValue());
} else {
me.Brakes.leftPressPsi.setValue(0);
}
if (me.Brakes.rightbrake.getValue() > 0 or me.Brakes.mode.getValue() == 0) {
me.Brakes.rightPressPsi.setValue(1000);
me.Brakes.rightPressPsi.setValue(1000 * pts.Fdm.JSBsim.Fcs.brake[1].getValue());
} else {
me.Brakes.rightPressPsi.setValue(0);
}
} else {
# Alternate Braking (Yellow KO or Antiskid KO or electric KO) - missing condition: BSCU OK-KO
if (me.Psi.yellow.getValue() < 2500 or !me.Brakes.askidSw.getValue() or !props.globals.getValue("/systems/electrical/serviceable")) {
if (me.Brakes.accumPressPsi.getValue() < 1000 and (me.Psi.yellow.getValue() < 2500 or !me.Brakes.askidSw.getValue() or (systems.ELEC.Bus.dc1.getValue() < 24 and systems.ELEC.Bus.dc2.getValue() < 24 and systems.ELEC.Bus.dcess.getValue() < 24))) {
if (me.Brakes.leftbrake.getValue() > 0 or me.Brakes.mode.getValue() == 0) {
me.Brakes.leftPressPsi.setValue(me.Brakes.accumPressPsi.getValue());
me.Brakes.leftPressPsi.setValue(me.Brakes.accumPressPsi.getValue() * pts.Fdm.JSBsim.Fcs.brake[0].getValue());
} else {
me.Brakes.leftPressPsi.setValue(0);
}
if (me.Brakes.rightbrake.getValue() > 0 or me.Brakes.mode.getValue() == 0) {
me.Brakes.rightPressPsi.setValue(me.Brakes.accumPressPsi.getValue());
me.Brakes.rightPressPsi.setValue(me.Brakes.accumPressPsi.getValue() * pts.Fdm.JSBsim.Fcs.brake[1].getValue());
} else {
me.Brakes.rightPressPsi.setValue(0);
}
} else {
if (me.Brakes.leftbrake.getValue() > 0 or me.Brakes.mode.getValue() == 0) {
me.Brakes.leftPressPsi.setValue(1000 * pts.Fdm.JSBsim.Fcs.brake[0].getValue());
} else {
me.Brakes.leftPressPsi.setValue(0);
}
if (me.Brakes.rightbrake.getValue() > 0 or me.Brakes.mode.getValue() == 0) {
me.Brakes.rightPressPsi.setValue(1000 * pts.Fdm.JSBsim.Fcs.brake[1].getValue());
} else {
me.Brakes.rightPressPsi.setValue(0);
}

12
Systems/a320-fcs.xml
View file

@ -1172,11 +1172,13 @@
</actuator>
<switch name="fcs/brake-avail">
<default value="1"/>
<!--<test logic="OR" value="1">
/systems/hydraulic/green-psi ge 2000
/systems/hydraulic/yellow-psi ge 1500
</test>-->
<default value="0"/>
<test logic="OR" value="1">
/systems/hydraulic/green-psi ge 2500
/systems/hydraulic/yellow-psi ge 1000
/systems/hydraulic/yellow-accumulator-psi gt 0
</test>
<output>fcs/brake-avail</output>
</switch>
<fcs_function name="fcs/left-brake-input">

32
Systems/a320-hydraulic.xml
View file

@ -386,7 +386,7 @@
</ifthen>
</function>
</fcs_function>
<actuator name="/systems/hydraulic/yellow-psi">
<input>/systems/hydraulic/yellow-psi-cmd</input>
<rate_limit sense="incr">/systems/hydraulic/sys-incr-rate</rate_limit>
@ -397,6 +397,34 @@
<input>/systems/hydraulic/yellow-psi</input>
<gain>0.9</gain>
</pure_gain>
<fcs_function name="/systems/hydraulic/yellow-accumulator-psi-cmd">
<function>
<ifthen>
<and>
<ge>
<property>/systems/hydraulic/yellow-psi</property>
<value>0</value>
</ge>
<ge>
<property>/systems/hydraulic/yellow-psi</property>
<property>/systems/hydraulic/yellow-accumulator-psi-cmd</property>
</ge>
</and>
<max>
<property>/systems/hydraulic/yellow-psi</property>
<property>/systems/hydraulic/yellow-accumulator-psi-cmd</property>
</max>
<property>/systems/hydraulic/yellow-accumulator-psi-cmd</property>
</ifthen>
</function>
</fcs_function>
<actuator name="/systems/hydraulic/yellow-accumulator-psi">
<input>/systems/hydraulic/yellow-accumulator-psi-cmd</input>
<rate_limit sense="incr">/systems/hydraulic/sys-incr-rate</rate_limit>
<rate_limit sense="decr">/systems/hydraulic/sys-decr-rate</rate_limit>
</actuator>
<!-- PTU -->
<fcs_function name="/systems/hydraulic/yellow-psi-diff">
@ -510,7 +538,7 @@
</test>
<test logic="AND" value="2">
/controls/gear/brake-parking ne 1
/systems/hydraulic/brakes/accumulator-pressure-psi ge 0
/systems/hydraulic/yellow-accumulator-psi-cmd ge 0
</test>
</switch>
</channel>