To improve reliability some systems adopt double redundancy; however, some failure conditions may prevent the normal operation of the machine or the machine to reach a safe state. The method proposed in this paper allows the normal operation of the system even in a fault condition of the control unit. The signals resulting from the parallel execution of code are modulated to a higher frequency and decoupled from each control stage using two capacitors; the information is then demodulated to obtain the control signal, either in the case of one or two branches working in the control unit.
Fault tolerant PWM generation with double-redundant logic / Troni, Fabrizio; Concari, Carlo; Toscani, Andrea; Buticchi, G.; Franceschini, Giovanni. - 1:(2014), pp. 495-502. (Intervento presentato al convegno 2013 3rd International Conference on Advanced Materials and Information Technology Processing, AMITP 2013 tenutosi a Los Angeles, CA, USA) [10.2495/AMITP20130581].
Fault tolerant PWM generation with double-redundant logic
TRONI, Fabrizio;CONCARI, Carlo;TOSCANI, Andrea;FRANCESCHINI, Giovanni
2014-01-01
Abstract
To improve reliability some systems adopt double redundancy; however, some failure conditions may prevent the normal operation of the machine or the machine to reach a safe state. The method proposed in this paper allows the normal operation of the system even in a fault condition of the control unit. The signals resulting from the parallel execution of code are modulated to a higher frequency and decoupled from each control stage using two capacitors; the information is then demodulated to obtain the control signal, either in the case of one or two branches working in the control unit.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
