p38192567
/
followme_e-tron
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Engine: MAJOR bug fix

This commit is contained in:
Sidi Liang 2020-01-17 20:15:26 +08:00
parent 4ba55f833c
commit ebf4f35dd7
2 changed files with 17 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
Nasal/engine.nas
View File

@ -1,4 +1,5 @@
#//Followme EV electric engine by Sidi Liang
var N2LBS = 0.2248089;
var Engine = {
#//Class for any electric engine
#//mTorque: Max torque, mPower: Max Power, rpmAtMPower: RPM at max power
@ -17,7 +18,7 @@ var Engine = {
isRunning: func(){
return me.runningState;
},
direction: 1,
setDirection: func(dir){
me.direction = dir;
@ -41,6 +42,10 @@ var Engine = {
return me.gear;
},
rotor_moi: 2.5,
wheel_moi: 0.7688,
wheel_radius: 0.31, #//M
rpm: 0,
maxTorque: 460, #Nm
@ -64,7 +69,7 @@ var Engine = {
var friction_lbs = props.getNode("/",1).getValue("fdm/jsbsim/forces/fbx-gear-lbs");
var friction = 4.4492 * friction_lbs;
#//var frictionTorque = friction * 0.045;
var angularDecelaeration = friction * 0.072; #//frictionTorque = friction * 0.15 * 0.3, angularDecelaeration = frictionTorque/0.625;
var angularDecelaeration = friction * me.wheel_radius * (1/me.wheel_moi) * 0.25; #//frictionTorque = friction * wheel_radius, angularDecelaeration = frictionTorque/wheel_moi;
#print(angularAcceleration);
#print("de"~angularDecelaeration);
@ -80,7 +85,7 @@ var Engine = {
if(angularSpeed + totalAcceleration * 0.1 > 10){
angularSpeed = angularSpeed + totalAcceleration * 0.1;
}else if(angularSpeed + totalAcceleration * 0.1 < 10){
#print("angularSpeed + totalAcceleration * 0.1 < 10");
#print("angularSpeed + totalAcceleration * 0.01 < 10");
angularSpeed = angularSpeed + angularAcceleration * 0.1;
}
}else if(me.getDirection() == -1){
@ -122,26 +127,26 @@ var Engine = {
var cmdPower = throttle * me.ratedPower;
#print("cmdPower: "~cmdPower);
me.activePower_kW = math.abs(me.rpm * me.torque / 10824);
me.activePower_kW = math.abs(me.rpm * me.torque / 9549);
if(math.abs(me.rpm) < cmdRpm){
#print("me.rpm < cmdRpm");
me.torque = throttle * me.maxTorque * direction;
var angularAcceleration = me.torque / 0.175; #rad/s^2
var angularAcceleration = me.torque / me.rotor_moi; #rad/s^2
me.rpm = me.rpm_calculate(angularAcceleration);
}else if(throttle == 0){
me.activePower_kW = 0;
me.torque = 0;
var angularAcceleration = direction * math.abs(me.torque) / 0.175; #rad/s^2
var angularAcceleration = direction * math.abs(me.torque) / me.rotor_moi; #rad/s^2
me.rpm = me.rpm_calculate(angularAcceleration);
}else{
me.activePower_kW = cmdPower;
var angularAcceleration = direction * math.abs(me.torque) / 0.175; #rad/s^2
var angularAcceleration = direction * math.abs(me.torque) / me.rotor_moi; #rad/s^2
me.rpm = me.rpm_calculate(angularAcceleration);
me.torque = direction * math.abs(me.activePower_kW / me.rpm * 10824);
me.torque = direction * math.abs((9549 * me.activePower_kW) / me.rpm);
}
var force = 3.33 * me.torque * me.gear;
var force = (1/me.wheel_radius) * me.torque * me.gear;#//unit: N
me.outputForce = force;
@ -150,7 +155,7 @@ var Engine = {
}
outputForce(me.outputForce);
outputForce(me.outputForce * N2LBS);
},
@ -253,5 +258,4 @@ var startEngine = func(){
var stopEngine = func(){
engine_1.stopEngine();
print("Engine stopped");
}
}

2
followme_e-tron.xml
View File

@ -40,7 +40,7 @@
<iyy unit="SLUG*FT2"> 5334 </iyy>
<izz unit="SLUG*FT2"> 11945 </izz>
<ixz unit="SLUG*FT2"> 0 </ixz>
<emptywt unit="KG"> 3000 </emptywt>
<emptywt unit="KG"> 995 </emptywt>
<location name="CG" unit="M">
<x> 1.5 </x>
<y> 0.0 </y>