How to select and locate the measurement points optimally for a class of linear distributed parameter system (DPS) is studied.

FCCU (fluid catalysis and cracking unit) is a highly non-linear, time variable, long time delay, intensive coupling, parameter distributed, indefinite and complex system.

This paper proposes one method of acquiring truly random bits by means of modulating the parameter of one-dimensional piecewise linear maps by arbitrarily distributed analogue random source.