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author | Siddharth11235 | 2019-09-03 18:09:16 +0530 |
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committer | Siddharth11235 | 2019-09-03 18:09:16 +0530 |
commit | b4b6aa36e3486a3544acc52419149b5671f841e9 (patch) | |
tree | 66c1783158f23e6d21c77324156fc57e18d4ac67 /Flight_Eqns/Wind_Axis_eqns/Wind6DOFLinTest.mo | |
parent | f5266f634f4fb4fd39933a83551a01cf446256b8 (diff) | |
download | OpenModelica_HIL-master.tar.gz OpenModelica_HIL-master.tar.bz2 OpenModelica_HIL-master.zip |
Diffstat (limited to 'Flight_Eqns/Wind_Axis_eqns/Wind6DOFLinTest.mo')
-rw-r--r-- | Flight_Eqns/Wind_Axis_eqns/Wind6DOFLinTest.mo | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/Flight_Eqns/Wind_Axis_eqns/Wind6DOFLinTest.mo b/Flight_Eqns/Wind_Axis_eqns/Wind6DOFLinTest.mo new file mode 100644 index 0000000..3005f2e --- /dev/null +++ b/Flight_Eqns/Wind_Axis_eqns/Wind6DOFLinTest.mo @@ -0,0 +1,184 @@ +model Wind6DOFLinTest + +import Modelica.Math.Matrices.*; +import SI=Modelica.SIunits; +import Modelica.Blocks.Interfaces.*; + +parameter Real rho = 1.225; +parameter Real g = 9.81; +parameter Real m = 1043.26;//1.56 for zagi +parameter Real S_ref = 16.1651;//reference area +parameter Real C_bar = 1.493 ;//average chord +parameter Real b = 10.911 ;//span +//parameter Real b= 1.4224, cbar = 0.3302,s = 0.2589; + + + +parameter Real CD0 = 0.036;//= 0.01631;for Zagi +parameter Real K_drag = 0.0830304;//for cessna +parameter Real CD_beta = 0.17;//for cessna +parameter Real CD_alpha= 0.2108; +parameter Real CD_q = 0; +parameter Real CD_delta_e= 0.3045; + +//side force +parameter Real Cy_beta = -0.31;//for cessna +parameter Real Cy_p = -0.037;//for cessna +parameter Real Cy_r = 0.21;//for cessna +parameter Real Cy_delta_r = 0.187; //for cessna +parameter Real Cy_delta_a= 0; //for cessna + +// lift +parameter Real CL0 = 0.25; //for cessna +parameter Real CL_alpha = 4.47;//for cessna +parameter Real CL_q = 3.9;//for cessna +parameter Real CL_delta_e = 0.3476;//for cessna + +// rolling moment +parameter Real Cl_beta = -0.089;//for cessna +parameter Real Cl_p = -0.47;//for cessna +parameter Real Cl_r = 0.096;//for cessna +parameter Real Cl_delta_a= -0.09;//for cessna +parameter Real Cl_delta_r = 0.0147;//for cessna + +// pitching moment +parameter Real Cm0 = -0.02;//for cessna +parameter Real Cm_alpha = -1.8;//for cessna +parameter Real Cm_q = -12.4;//for cessna +parameter Real Cm_delta_e = -1.28;//for cessna + +// yawing moment +parameter Real Cn_beta = 0.065;//for cessna +parameter Real Cn_p = -0.03;//for cessna +parameter Real Cn_r = -0.99;//for cessna +parameter Real Cn_delta_a = -0.0053;//for cessna +parameter Real Cn_delta_r = -0.0657;//for cessna + + +//Initial conditions. (deltaE, thrust[1] and the others are straightforward) + +parameter Real[3,3] J = {{1285.31, 0.0, 0.0}, {0.0, 1824.93, 0.0}, {0.0, 0.0, 2666.893}}; + +Real CL; +Real CD; +Real CY; +Real Cl; +Real Cm; +Real Cn; +Real CX; +Real CZ; +//Params +RealInput deltaE (start = -0.15625) annotation(Placement(visible = true, transformation(origin = {-110, -33}, extent = {{-20, -20}, {20, 20}}, rotation = 0), iconTransformation(origin = {-110, -33}, extent = {{-20, -20}, {20, 20}}, rotation = 0))); +parameter Real deltaR = 0; + +parameter Real deltaA = 0; +// Modelica.Blocks.Sources.Constant deltaA (k =0) annotation( Placement(visible = true, transformation(origin = {-42, 28}, extent = {{-10, -10}, {10, 10}}, rotation = 0))); + + + + +RealInput thrust (start = 1112.82) annotation(Placement(visible = true, transformation(origin = {-110, 33}, extent = {{-20, -20}, {20, 20}}, rotation = 0), iconTransformation(origin = {-110, 33}, extent = {{-20, -20}, {20, 20}}, rotation = 0)));//Thrust force = 1112.82; + +//12 states +Real p (start = 0); +Real q (start = 0); +Real r (start = 0); + +Real OMEGA[3,3] = skew({p,q,r});//Skew symmetric matrix form of the angular velocity term + + +Real V (start =39.8858); +Real alpha (start = 0.1); +Real beta (start = 0); + + +Real x (start = 0); +Real y (start = 0); +Real z (start = 100); + +Real gamma (start = 0); +Real chi (start = 0); +Real mu (start = 0); + +Real qbar = 0.5*rho*V^2; +Real [3] Moment; + + + +Real Vdot; +Real alphadot; +Real betadot; + +Real[3] omegadot; + +Real mudot; +Real gammadot; +Real chidot; + +Real xdot; +Real ydot; +Real zdot; + + +equation +CL = CL0+CL_alpha*alpha+((CL_q*q*C_bar)/(2*V))+CL_delta_e*deltaE; +//CD = CD0+CD_alpha*alpha+((CD_q*q*C_bar)/(2*V))+CD_delta_e*abs(deltaE) ; +CD = CD0 + K_drag*CL^2; +CY = Cy_beta * beta + Cy_p * (p*b)/(2*V) + Cy_r *(r*b)/(2*V) + Cy_delta_a * deltaA + Cy_delta_r*deltaR;//Sideslip coeff + + +Cl = Cl_beta * beta + Cl_p*(p*b)/(2*V) + Cl_r *(r*b)/(2*V) + Cl_delta_a * deltaA + Cl_delta_r * deltaR;//Rolling coeff + +Cm = Cm0+Cm_alpha*alpha+((Cm_q*q*C_bar)/(2*V))+Cm_delta_e*deltaE;//pitching coeff + +Cn = Cn_beta * beta + Cn_p * (p*b)/(2*V) + Cn_r *(r*b) /(2*V) + Cn_delta_a * deltaA + Cn_delta_r * deltaR;//Yawing coeff + +CX = -CD*cos(alpha) + CL*sin(alpha); +CZ = -CD*sin(alpha) - CL*cos(alpha); + +Moment[2] = Cm*qbar*S_ref*C_bar; +Moment[1] = Cl*qbar*S_ref*b; +Moment[3] = Cn*qbar*S_ref*b; + +Vdot = der(V); +alphadot = der(alpha); +betadot = der(beta); + +omegadot[1] = der(p); +omegadot[2] = der(q); +omegadot[3] = der(r); + +xdot = der(x); +ydot = der(y); +zdot = der(z); + +mudot = der(mu); +gammadot = der(gamma); +chidot = der(chi); + + + + +Vdot = 1/m*(thrust*cos(alpha)*cos(beta)-0.5*rho*V^2*S_ref*(CD*cos(beta)-CY*sin(beta))-m*g*sin(gamma)); + +alphadot = q-1/cos(beta)*((p*cos(alpha)+r*sin(alpha))*sin(beta)-g/V*cos(gamma)*cos(mu)+0.5*rho*V^2*S_ref*CL/(m*V)+thrust*sin(alpha)/(m*V)); + +betadot = (p*sin(alpha)-r*cos(alpha))+1/(m*V)*(-thrust*cos(alpha)*sin(beta)+0.5*rho*V^2*S_ref*(CY*cos(beta)+CD*sin(beta))+m*g*cos(gamma)*sin(mu)); + + +omegadot = inv(J) * (Moment- OMEGA* J*{p,q,r}); + + + +xdot=V*cos(gamma)*cos(chi); +ydot=V*cos(gamma)*sin(chi); +zdot=-V*sin(gamma); + +mudot = p+tan(gamma)*sin(mu)*q+tan(gamma)*cos(mu)*r; +gammadot = cos(mu)*q-sin(mu)*r; +chidot=(1/cos(gamma))*sin(mu)*q+(1/cos(gamma))*cos(mu)*r; + + +annotation(experiment(StartTime = 0, StopTime = 500, Interval = 0.002), uses(Modelica(version = "3.2.2"))); + +end Wind6DOFLinTest;
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