초록 ▼

A control system for operating process controller means to initiate corrective action to maintain a selected process condition in a selected range including first sensor means to sense the process condition and provide a first condition output signal, a second sensor means to sense a second conditio

A control system for operating process controller means to initiate corrective action to maintain a selected process condition in a selected range including first sensor means to sense the process condition and provide a first condition output signal, a second sensor means to sense a second condition which affects the process condition to provide a second condition output signal reflective of the second condition, amplifier means to selectively amplify the process condition output signal and provide a modified process condition output signal, summing means to selectively sum the process condition output signal and the second condition output signal and provide a reference signal, comparator means to compare the modified process condition output signal and the reference signal to provide a first comparator output signal when the modified process condition output signal exceeds the reference signal and to provide a second output signal when the reference signal exceeds the modified process condition output signal, operator means to selectively activate the process controller means in response to the first and second signals to modify the process condition.

대표청구항 ▼

A control system for operating a process controller means to initiate corrective action to maintain a selective process condition in a selected range including first sensor means to sense the process condition and to provide a first condition output signal, second sensor means to sense a second cond

A control system for operating a process controller means to initiate corrective action to maintain a selective process condition in a selected range including first sensor means to sense the process condition and to provide a first condition output signal, second sensor means to sense a second condition which affects the process condition to provide a second condition output signal reflective of the second condition, amplifier means to amplify the first process condition output signal and provide a modified process condition output signal, summing means to sum the first condition output signal and the second condition output signal and provide a reference signal, comparator means to compare the modified process condition output signal and the reference signal to provide a first comparator output signal when the modified process output condition signal exceeds the reference signal and to provide a second output signal when the reference signal exceeds the modified process signal, operator means to receive the first and second output signals and selectively operate the process controller means in response to the first and second output signals to modify the process condition in response thereto.