Draw a block diagram of the control loop, Other Engineering

A speed control system has an amplifier-motor-control element capable of maintaining a speed of 4000 rpm at the output shaft with no external load and an input of 8 mV to the amplifier. A tacho-generator coupled to the output shaft gives 120 mV per 100 rpm and provides the feedback signal of the closed loop system.

a) Draw a Block diagram of the control loop (Use the block diagram of a closed-loop process control system in Figure 1.7 of the textbook as a guide)

b) For an output shaft speed of 4000 rpm, determine the values of the following signals on the Block diagram:

i) feedback signal Cm

ii) actuating (error) signal, E

iii) reference input (set point) signal, R

c) A load is now applied to the output shaft such that if the actuating (error) signal remained constant, the speed would fall to 3000 rpm (ie open loop). Calculate the approximate output speed in the closed-loop system.

d) A replacement motor is fitted and this produces a no-load speed of 2500 rpm for a 8 mV input. What must the reference input (set point) signal be to provide a speed of 4000 rpm.

Posted Date: 4/1/2013 4:04:16 AM | Location : United States







Related Discussions:- Draw a block diagram of the control loop, Assignment Help, Ask Question on Draw a block diagram of the control loop, Get Answer, Expert's Help, Draw a block diagram of the control loop Discussions

Write discussion on Draw a block diagram of the control loop
Your posts are moderated
Related Questions

Direct from engine compressor: A Load valve is switched on from the flightdeck, power for the switch is available once the APU has achieved 95% + 3 sec. This energises the swit

Drop-weight impact towers are frequently used to generate low velocity impact damage. Typically, the falling mass will be instrumented, containing a load-cell for measuring the lo

To achieve successful results in powder metallurgy the metallic powder must be thoroughly homogenized. The term blending and mixing are both used in this content. Blending refers t

How i can have the FLM if i dont have the Total Assets or Shareholders Equity

The module content and teaching style has undergone revision since 2006-07. There are two reasons for this. First, this was the first year that Prof Badcock was responsible for the

Question: (a) What are the elements limiting high data rate in cellular networks? (b) Describe the following characteristics of 4G mobile networks: - Always on - RAN A

"Suppose an investor acquired 1 Round lot of Walden stock at $30/share last year. If the investor received a $1.00 per share dividend during the year and sells the shares at year-e

Fluid Cleaning This procedure involves spraying an emulsive type surface cleaning fluid into the compressor whilst the engine is turning either on the starter motor or at low R

Effects of Temperature and Altitude. Cold and/or Low On cold days the air density will increase. If the engine has a ‘part throttle rating' and the throttle is advanced to