AESL/TP1 03.08 Charge in em field.AESL

   1 IDENTIFICATION DIVISION
   2 PROGRAM-ID ChargeInEMfield
   3 VERSION 20240116
   4 COMMENT A mass m with charge q>0 is located in a static electro-magnetic field [0,0,E], [0,-B,0].
   5 COMMENT Find the trajetory
   6 COMMENT Differential equation (Lorentz force): x'' = omega*z', z'' = a*omega^2 - omega*x'
   7 COMMENT good start settings are omega=0,92, a*omega^2=0,05
   8
   9 ENVIRONMENT DIVISION
  10 ENGINE Anabrid-THAT
  11 TIMEBASE 1ms # corresponds to 1s
  12 REQUIRES INTEGRATOR 4, INVERTER 1, COEFFICIENT 3
  13
  14 DATA DIVISION
  15 OUTPUT OUTPUT.X x
  16 OUTPUT OUTPUT.Z z
  17 COEFFICIENT.1 OMEGA_X # -omega for x'
  18 COEFFICIENT.2 A*OMEGA^2
  19 COEFFICIENT.3 OMEGA_z # omega for z'
  20
  21 PROGRAM DIVISION
  22 x'' -> INTEGRATOR -> -x'
  23 -x' -> INTEGRATOR -> x
  24 -x' -> COEFFICIENT.OMEGA_X -> -omega*x'
  25 +1  -> COEFFICIENT.A*OMEGA^2 -> a*omega^2
  26 a*omega^2, -omega*x' -> INTEGRATOR -> -z' # input is z''
  27 -z' -> INTEGRATOR -> z
  28 -z' -> INVERTER -> z'
  29 z'  -> COEFFICIENT.OMEGA_Z -> omega*z' = x''
  30
  31 OPERATION DIVISION
  32 MODE REPEAT
  33 OP-TIME 21ms