Answer Posted / murthy
PID- proportional integral and derivative
there different types of controlling techniques,
combinations of these parameters in designing controllers.
it depends on what type of errror occurs in ur
system,deviation from ur set point,time u want ur
controller to take action.
if u want quick acting one then go for only proportional
controller,the disadvantage is you get higher deviation.
if u want to minimze error (measured-set value) go for
integrated controller,disadvantage-your final forms cyclic
fluctuations.
derivative is taken into acount when u want zero cycling
always it is not suggeted to go for PID controller,as it is
costly,ur system may not need it at all.for eg if u want to
control level of a tank with 2 feeds and one withdrawl u
dont need integral action so u can go for PD controller
only
| Is This Answer Correct ? | 7 Yes | 1 No |
Post New Answer View All Answers
what is load and what are the types of load?
Explain what are flameless oxidizers?
Explain can large temperature differences in vaporizers cause operational problems?
Explain what type of flow measurement devices is best for slurries?
i m a frsh chemical engineer now i m confuse to attend the interview so anybody pls send model question papers to this christ_vivek33@yahoo.com
What are some good strategies for curing tube vibration in shell and tube exchangers?
dear sir/madam, I had applied for the post of officer trainee so plz if u have any papers both technical or aptitude plz inform me on sonalichavan01@gmail.com
Is there any way to remove residual product left in pipes after a batch operation?
hello sir..iam keen to sit for iocl interview..please forward sample iocl questions to my id: kunal_kv06@yahoo.co.in
marketing procedure of iocl
What are the apt definitions for apparent power, active power and reactive power?
What is the difference between horizontal and vertical heat exchanger?
How is waste heat boilers categorized?
X is a solid having a white colour at room temperature. It has a density about 2g/cc. Although it has melting point near 325 degree Celsius, its properties start degrading above 260 degree Celsius. The coefficient of friction is very low about 0.1. It has very good dielectric properties especially at higher radio frequencies. It has a very high bulk resistivity. It is chemically inert. It is also resistant to van der Waals force. It is hydrophobic as well as lipophobic. Creep or ‘Cold Flow’ has been observed in X.
What is the maximum recommended velocity for steam in a plant pipe network?
