how to do decisions and compare events at fixed repeatative time span of 0 to 0.02 seconds

hi

i have a periodic time span of 0 to 0.02 seconds (50 hz signal). now in that fixed repetitive and accurate duration i want to do decisions like defined below. i have create the logic but i am unable to program it. kindly help me i will be highly thankful to you.

with best regards

mudasir

      angle1=0.000555555555555555556 seconds
      angle2=0.001666666666666666667 seconds
      angle3=0.003333333333333333333 seconds

      if (time>0 &&  time<=angle1)   
          S1=0; % states of gate pulses going to the hardware circuitry
          S2=1;
          S3=0;
          S4=1;
          S5=0;
          S6=1;
          S7=0;
          S8=1;
          S9=0;
          S10=1;
          S11=0;
          S12=1;
      else if (time>angle1 &&  time<=angle2)     
          S1=1;
          S2=1;
          S3=0;
          S4=0;
          S5=0;
          S6=1;
          S7=0;
          S8=1;
          S9=0;
          S10=1;
          S11=0;
          S12=1;
      else if (time>angle2 &&  time<=angle3)   
          S1=1;
          S2=1;
          S3=0;
          S4=0;
          S5=1;
          S6=1;
          S7=0;
          S8=0;
          S9=0;
          S10=1;
          S11=0;
          S12=1;
      else if (time>angle3 &&  time<=0.01-angle3)     
          S1=1;
          S2=1;
          S3=0;
          S4=0;
          S5=1;
          S6=1;
          S7=0;
          S8=0;
          S9=1;
          S10=1;
          S11=0;
          S12=0;
      else if (time>0.01-angle3 &&  time<=0.01-angle2)     
          S1=1;
          S2=1;
          S3=0;
          S4=0;
          S5=1;
          S6=1;
          S7=0;
          S8=0;
          S9=0;
          S10=1;
          S11=0;
          S12=1;
      else if (time>0.01-angle2 &&  time<=0.01-angle1)       
          S1=1;
          S2=1;
          S3=0;
          S4=0;
          S5=0;
          S6=1;
          S7=0;
          S8=1;
          S9=0;
          S10=1;
          S11=0;
          S12=1;
      else if (time>0.01-angle1 &&  time<=0.01+angle1)    
          S1=0;
          S2=1;
          S3=0;
          S4=1;
          S5=0;
          S6=1;
          S7=0;
          S8=1;
          S9=0;
          S10=1;
          S11=0;
          S12=1;
      else if (time>0.01+angle1 &&  time<=0.01+angle2)   
          S1=0;
          S2=0;
          S3=1;
          S4=1;
          S5=1;
          S6=0;
          S7=1;
          S8=0;
          S9=1;
          S10=0;
          S11=1;
          S12=0;
      else if (time>0.01+angle2 &&  time<=0.01+angle3)   
          S1=0;
          S2=0;
          S3=1;
          S4=1;
          S5=0;
          S6=0;
          S7=1;
          S8=1;
          S9=1;
          S10=0;
          S11=1;
          S12=0;
      else if (time>0.01+angle3 &&  time<=0.02-angle3)     
          S1=0;
          S2=0;
          S3=1;
          S4=1;
          S5=0;
          S6=0;
          S7=1;
          S8=1;
          S9=0;
          S10=0;
          S11=1;
          S12=1;
      else if (time>0.02-angle3 &&  time<=0.02-angle2)   
          S1=0;
          S2=0;
          S3=1;
          S4=1;
          S5=0;
          S6=0;
          S7=1;
          S8=1;
          S9=1;
          S10=0;
          S11=1;
          S12=0;
      else if(time>0.02-angle2 &&  time<=0.02-angle1)   
          S1=0;
          S2=0;
          S3=1;
          S4=1;
          S5=1;
          S6=0;
          S7=1;
          S8=0;
          S9=1;
          S10=0;
          S11=1;
          S12=0;
      else 
          S1=0;
          S2=1;
          S3=0;
          S4=1;
          S5=0;
          S6=1;
          S7=0;
          S8=1;
          S9=0;
          S10=1;
          S11=0;
          S12=1;

there is also a second logic, generate 50Hz signal and measure degree of each and every instant of that and do decisions like above, by changinging only

      0.01 seconds=180 degree
      0.02 seconds=360 degree
      angle1=10 degree      as 1 degree=0.02/360
      angle2=30 degree
      angle3=60 degree

both logic's can be implemented but how?.

kindly help me