Team:KULeuven/Model/Inverter

Position in the system
The InverTimer subsystem receives its input from the filter, T7. The InverTimer's function is to produce HSL when no input is present, so a low T7 input gives rise to a high HSL output and vice versa. The production of HSL means that the cell will start a timer that eventually will be used in the celldeath-subsystem to produce ccdB. In this way the cell will die off if no desease remains present.

Describing the system
see also: Project:InverTimer



ODE's
  

Simulations
The simulation shows a working inverter (left figure). A small disadvantage is the transient behaviour of the inverter: a small pulse of 1000 seconds results in a transient behaviour of +- 30000 seconds. Also for a long pulse (10000 seconds) is a long transient behaviour noticeable (40000 seconds). The effect of the inverter on the timer aspect is visuable in the right figure: a long pulse ( from 10000 till 11000) resets the timer (HSL drecreases till zero). After this pulse and the transient behaviour of the inverter, the timer restarts counting. The short pulse (from 200000 till 201000 seconds) only partially resets the timer.

All graphs have amounts (number of molecules in the cell) plotted vs time, measured in seconds.

 