feat(a380x/ap): improved support of 4x simulation rate (#9374)

* feat(a380x/ap): improved support of 4x simulation rate

* Update CHANGELOG.md

* relax performance requirements due to improved tuning in AP

* fix changelog

* further improved performance monitoring for A380X

.github/CHANGELOG.md

@@ -10,6 +10,7 @@
 1. [ND] Fix memory leak when using TERR ON ND - @Nufflee (nufflee)
 1. [A380X/OVHD] Fix RCDR GND CTL button/logic - @flogross89 (floridude)
 1. [A380X] Various fixes in FMS and ECL - @flogross89 (floridude)
+1. [A380X/AP] Improved support of simulation rate 4x - @aguther (Andreas Guther)
 
 ## 0.12.1
 

fbw-a380x/src/wasm/fbw_a380/src/FlyByWireInterface.h

@@ -35,8 +35,8 @@ class FlyByWireInterface {
  private:
   const std::string CONFIGURATION_FILEPATH = "\\work\\ModelConfiguration.ini";
 
-  static constexpr double MAX_ACCEPTABLE_SAMPLE_TIME = 0.11;
-  static constexpr uint32_t LOW_PERFORMANCE_TIMER_THRESHOLD = 10;
+  static constexpr double MAX_ACCEPTABLE_SAMPLE_TIME = (1.0 / 6.0);
+  static constexpr uint32_t LOW_PERFORMANCE_TIMER_THRESHOLD = (3 * 6);
   uint32_t lowPerformanceTimer = 0;
 
   double previousSimulationTime = 0;

fbw-a380x/src/wasm/fbw_a380/src/interface/SimConnectInterface.cpp

@@ -3330,7 +3330,7 @@ void SimConnectInterface::processEventWithOneParam(const DWORD eventId, const DW
       // calculate frame rate that will be seen by FBW / AP
       double theoreticalFrameRate = (1 / sampleTime) / (simData.simulation_rate * 2);
       // determine if an increase of simulation rate can be allowed
-      if ((simData.simulation_rate < maxSimulationRate && theoreticalFrameRate >= 8) || simData.simulation_rate < 1 ||
+      if ((simData.simulation_rate < maxSimulationRate && theoreticalFrameRate >= 6) || simData.simulation_rate < 1 ||
           !limitSimulationRateByPerformance) {
         sendEvent(Events::SIM_RATE_INCR, 0, SIMCONNECT_GROUP_PRIORITY_DEFAULT);
         std::cout << "WASM: Simulation rate " << simData.simulation_rate;

fbw-a380x/src/wasm/fbw_a380/src/model/A380PitchNormalLaw.cpp

@@ -63,7 +63,7 @@ A380PitchNormalLaw::Parameters_A380PitchNormalLaw_T A380PitchNormalLaw::A380Pitc
   { 0.0, 163.0, 243.0, 344.0, 400.0 },
 
 
-  { 0.0, 0.06, 0.1, 0.2, 1.0 },
+  { 0.0, 0.06, 0.1, 0.13, 0.26, 1.0 },
 
 
   { 0.0, 163.0, 243.0, 344.0, 400.0 },
@@ -246,7 +246,7 @@ A380PitchNormalLaw::Parameters_A380PitchNormalLaw_T A380PitchNormalLaw::A380Pitc
   { 1.0, 1.0, 0.5, 0.3, 0.3 },
 
 
-  { 1.0, 1.0, 0.5, 0.3, 0.3 },
+  { 1.0, 1.0, 1.0, 1.0, 1.0, 0.25 },
 
 
   { 1.0, 1.0, 0.5, 0.3, 0.3 },
@@ -1866,7 +1866,7 @@ void A380PitchNormalLaw::step(const real_T *rtu_In_time_dt, const real_T *rtu_In
     A380PitchNormalLaw_rtP.ScheduledGain1_Table, 4U);
   rtb_Y_a = rtb_Saturation_ix * rtb_Sum_ma;
   rtb_Sum_ma = look1_binlxpw(*rtu_In_time_dt, A380PitchNormalLaw_rtP.ScheduledGain_BreakpointsForDimension1_d,
-    A380PitchNormalLaw_rtP.ScheduledGain_Table_hh, 4U);
+    A380PitchNormalLaw_rtP.ScheduledGain_Table_hh, 5U);
   rtb_Sum_ma = rtb_Y_a * rtb_Sum_ma * A380PitchNormalLaw_rtP.DiscreteTimeIntegratorVariableTs_Gain * *rtu_In_time_dt;
   rtb_Y_a = *rtu_In_eta_deg - rtb_Sum_ma;
   rtb_AND = ((rtb_Y_pa == 0.0) || (rtb_ManualSwitch == A380PitchNormalLaw_rtP.CompareToConstant_const) ||

fbw-a380x/src/wasm/fbw_a380/src/model/A380PitchNormalLaw.h

@@ -131,7 +131,7 @@ class A380PitchNormalLaw final
     real_T ScheduledGain_BreakpointsForDimension1_f[4];
     real_T ScheduledGain_BreakpointsForDimension1_b[4];
     real_T ScheduledGain1_BreakpointsForDimension1[5];
-    real_T ScheduledGain_BreakpointsForDimension1_d[5];
+    real_T ScheduledGain_BreakpointsForDimension1_d[6];
     real_T ScheduledGain1_BreakpointsForDimension1_h[5];
     real_T LagFilter_C1;
     real_T WashoutFilter_C1;
@@ -218,7 +218,7 @@ class A380PitchNormalLaw final
     real_T ScheduledGain_Table_h[4];
     real_T ScheduledGain_Table_e[4];
     real_T ScheduledGain1_Table[5];
-    real_T ScheduledGain_Table_hh[5];
+    real_T ScheduledGain_Table_hh[6];
     real_T ScheduledGain1_Table_c[5];
     real_T DiscreteTimeIntegratorVariableTs_UpperLimit;
     real_T DiscreteTimeIntegratorVariableTs_UpperLimit_p;