Thanks to our significant experience with the environmental requirements typical of aerospace and railway applications, we have matured the technical expertise needed for the design of custom controllers for harsh environments. Decades of experience in electronic engineering give us the optimal expertise to cover all the phases required for the development of new products: design, prototyping, testing, certification, manufacturing (by qualified sub-contractors).
Merging a strong Applied Physics background with decades of experience in High Reliability Electronics Design to benefit the development of new products for rugged Industrial, Rail Transit, and Aerospace applications.
At ease with harsh environments
Rugged Electronics for Rail Transit Safety
Some of our successfully completed projects include: •electronic brake controllers for railway vehicles applications•controllers for spacecraft's on-board energy conditioning and power bus voltage regulation•custom electronic controllers for industrial automation applications•self-compensating Hall effect absolute angular encoder for rotary mechanisms used in spacecrafts or in rugged terrestrial applications (railway, oil & gas)•credit card size authentication token capable of reading a challenge code from a flashing pattern displayed on a PC monitor
C-Sigma was founded in 1997 by Luca Ghislanzoni, an industrial physicist, when leaving the European Space Agency. During the 10 years spent with ESA, he specialized in high reliability electronic controllers for mission critical functions, such as the Electrical Power Bus Voltage Regulation function of the on-board Energy Conversion and Conditioning System. For such applications a failure could mean the loss of the complete spacecraft. Thus, critical units (e.g. Battery Discharge Regulators, built out of many identical, parallel operating, hot redundant modules) are controlled by 3 fully independent controllers, whose respective output signals are then “2 out of 3 majority voted” by means of a voter, effectively achieving SIL4 for the availability of power to all other sub-systems and payloads. Said voter must be designed very carefully (design validated by Worst Case Analysys, Failure Mode Effects Analysis, and last, but not least, Extensive Testing), in order to ensure proper operation even in case of a component failure (Single Point Failure Tolerant Design). More in general, achieving High Reliability is a difficult and multi-faceted task, painstakingly built out of bullet-proof procedures, deep and careful analyses, independent experts assessments, lot of patience, and … test, test, test, and retest … Finally, after so many years in this industry, here is my personal advice: never forget to give Reliability a KISS (Keep It Simple Stupid … an old adage suggests), as starting with a simple as feasible subsystem approach goes a long way towards achieving Product Reliability and Safety. C-Sigma s.r.l. 2015