ComputeAcceleration: more intuitive formulas

VectoCore/VectoCore/Models/SimulationComponent/Impl/Driver.cs

@@ -650,9 +650,12 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
 			var currentSpeed = DataBus.VehicleSpeed;
 			var retVal = new OperatingPoint() { SimulationDistance = ds };
 
-			var requiredAverageSpeed = (targetVelocity + currentSpeed) / 2.0;
-			var requiredAcceleration =
-				(((targetVelocity - currentSpeed) * requiredAverageSpeed) / ds).Cast<MeterPerSquareSecond>();
+			// Δx = (v0+v1)/2 * Δt
+			// => Δt = 2*Δx/(v0+v1) 
+			var dt = 2 * ds / (currentSpeed + targetVelocity);
+
+			// a = Δv / Δt
+			var requiredAcceleration = (targetVelocity - currentSpeed) / dt;
 
 			if (!limitByDriverModel) {
 				return ComputeTimeInterval(requiredAcceleration, ds);