What is the DDC? I- It is a process control system in which certain components of conventional analog control systems are replaced by digital comp...
What is the DDC?
I- It is a process control system in which certain components of conventional analog control systems are replaced by digital computers.
II- DDC is no longer used because current computers are capable of mimicking the proportional-integral-derivative control mode of analog devices.
III- It is more associated with discrete production industries because it replaces the electromechanical relays previously used to control ON-OFF type control actions.
a) Only I is correct.
b) Only II is correct.
c) Only III is correct.
d) I, II, and III are correct.
I- It is a process control system in which certain components of conventional analog control systems are replaced by digital computers.
II- DDC is no longer used because current computers are capable of mimicking the proportional-integral-derivative control mode of analog devices.
III- It is more associated with discrete production industries because it replaces the electromechanical relays previously used to control ON-OFF type control actions.
a) Only I is correct.
b) Only II is correct.
c) Only III is correct.
d) I, II, and III are correct.
💡 1 Resposta
Ed 
O DDC (Digital Direct Control) é um sistema de controle de processo no qual certos componentes dos sistemas de controle analógicos convencionais são substituídos por computadores digitais. É mais associado a indústrias de produção discreta, pois substitui os relés eletromecânicos anteriormente usados para controlar ações de controle ON-OFF. A afirmação II está incorreta, pois o DDC ainda é amplamente utilizado na indústria. Portanto, a alternativa correta é a letra a) Apenas I está correta.
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