What is the English abbreviation for UC in chain?

Thank you, but it’s not this one~~~

Multivariable control – I think it fits well

UC: Universal Control

What is multivariable control? Could you please explain it? Thank you~

Hello, could you explain what this “Universal Control” is? Thank you~

HG/T 20505 - 2014 specifies the meaning of the letter “U”. The letter “U” specifies: 1. Multivariable function. When multiple different variables need to be input, such as when it is necessary to indicate flow rate, liquid level, temperature, pressure, composition, etc. at the same time, the initial letter should not be taken from any one of these variables; in such cases, the letter UI should be used ； 2. Multivariable control. When a control signal is generated by multiple different inputs, for example when it is necessary to indicate temperature and pressure simultaneously and carry out compensation control using one controller, the initial letters T or P should not be used; in such cases, the letter UC should be employed ； 3. When a variable generates multiple different control signals (non-pivot control) ； 4. Multifunctional/multiplexing functionality requirements. In summary, Universal Control is general control.

It seems to be urgency control, similar to ESD