Hybrid cascade type aerial tracking system - with one operational amplifier with PID response in inner control loop and microcomputer in outer control loop

摘要

The hybrid cascade control by microcomputer is for an aerial tracking system and uses, for the internal analog control loop, an operational amplifier, normally designed as a proportional-integral-derivative (PID) controller to speed up the response. The external digital control loop uses a micro-computer with a PID-algorithm so that the entire control system combines fast response with high precision. The manipulated variable is covered by peripheral interface adapter PIA with 16 bits in parallel to provide a high resoln. Such an aerial tracking system requires a min. of space and expenditure.