Basic Closed Loop Control System Questiongreenspun.com : LUSENET : PID Controller Tuning : One Thread
I am trying to understand the PI control System.
+---------+ Set Value ---->(+)---Error--->| PI |---Control----> Present Val-----/ | | +---------+ Control = Kp x Error + Ki x Integral ( Error )
What is the uniot of Control? Let us assume,
Set Value => Voltage Volts Present Value => Voltage Volts So, Error => Voltage - Voltage Volts
Integral is Area under the curve. In time, we have Volts on Y axis and Time as X axis, So the unit is Volt Sec.
Can we add quanties of different Units? ( Volts and Volt Sec )
Thanks and Regards, - Ravi
-- Ravi Shankar Kashi (email@example.com), April 27, 2003
i think it cannot be added . but first we have to take a laplace transform then it can be added
-- navneetkumarsingh (firstname.lastname@example.org), July 18, 2003.