SpaceNews

Integral Systems, Inc. Submits Proposal for Next Generation Global Positioning System (GPS OCX)

Integral Systems, Inc. (NASDAQ:ISYS) , announced today that it has submitted a proposal to deliver an integrated, advanced command and control solution for the Global Positioning System (GPS) Next ...
SpaceNews

Integral Systems Europe to Support EUMETSAT’s Polar Mission Control System for the Next 15 Years

Integral Systems Europe (ISE), a wholly owned subsidiary of Integral Systems, Inc. (NASDAQ:ISYS) , announced today that it has signed a yearly renewable contract to support the Polar Mission Control ...
Hackaday

Flying With Proportional – Integral – Derivative Control

Your quad-copter is hovering nicely 100 feet north of you, its camera pointed exactly on target. The hover is doing so well all the RC transmitter controls are in the neutral position. The wind picks ...
EDN

Designing a Control System – Part 2: More on Control, Compensation and Design Flow

I stated without proof that a system with integral control will have zero DC error. This statement needs to be made with precision, and extended to the benefits of a ...