High
−
level Instructions
3
−
767
3) Derivative operation
Derivative operation generates an output which is proportional to the derivative time of the input.
Output mD
Offset e
Setting signal SV
Measurement
signal PV
+
−
e
mD
mD=TD
・
de
dt
Derivative
operation
The advancing characteristic of derivative control alleviates the adverse effect which the delaying
characteristic of the process exerts on control.
Derivative control grows stronger as the derivative time (Td) is increased.
In the case of pure derivative operation, control can temporarily become ineffective if noise is input, and this
can have an adverse effect on the process being controlled. For this reason, incomplete differential operation
is executed.
e
mD
4) PID operation
PID operation is a combination of proportional, integral, and derivative operation.
Kp
Output MV
Offset e
Setting signal SV
Measurement signal PV
+
−
+
+
+
Integral
operation
Derivative
operation
If the parameters are set to the optimum values, PID control can quickly bring the amount of control to the
target value and maintain it there.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
Содержание FP-X
Страница 1: ...Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 2: ...Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 24: ...Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 110: ...Relays Memory Areas and Constants 1 86 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 111: ...Chapter 2 Basic Instructions Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 112: ...Basic Instructions 2 2 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 184: ...Basic Instructions 2 74 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 264: ...Basic Instructions 2 154 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 265: ...Chapter 3 High level Instructions Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 266: ...High level Instructions 3 2 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 288: ...High level Instructions 3 24 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 406: ...High level Instructions 3 142 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 483: ...High level Instructions 3 219 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 537: ...High level Instructions 3 273 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 838: ...High level Instructions 3 574 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 862: ...High level Instructions 3 598 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 1052: ...High level Instructions 3 788 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 1053: ...Chapter 4 Precautions Concerning Programs Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 1054: ...Precautions Concerning Programs 4 2 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 1088: ...Precautions Concerning Programs 4 36 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 1089: ...Chapter 5 Appendix Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 1332: ...5 244 5 7 ASCII Codes Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...
Страница 1333: ...5 245 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...