Feedback Control of Dynamic Systems 8th Edition (Global) – Complete Step-by-Step
Solutions PDF Manual
, Problem 1.01PP
Draw a component block diagram for each of the following feedback control systems,
(a) The manual steering system of an automobile
(b) Drebbel’s incubator
(c) The water level controlled by a float and valve
(d) Watt’s steam engine with fly-bail governor
In each case, indicate the location of the elements listed below and give the units associated with
each signal.
In each case, indicate the location of the elements listed below and give the units associated with
each signal.
• The process
• The process desired output signal
• The sensor
• The actuator
• The actuator output signal
• The controller
• The controller output signal
• The reference signal
• The error signal
Notice that in a number of cases the same physical device may perform more than one of these
functions.
Step-by-step solution
step 1 of 4
(A).
Manual Steering Systems
Step 2 of 4
(B)
Step 3 of 4
(c)
Set water
leveKRef Input)
(CorMleror
■ Actuator o/p)
Water
Ftootvatve Tank Water level
Floating (process)
Offloat
(Sensor+contioller+Actualor)
"Water Level Controller
Step 4 of 4
(D)
, Problem 1.02PP
Identify the physical principles and describe the operation of the thermostat in your home or
office.
Step-by-step solution
step 1 of 1
Thermostat is used as the sensing element for controlling the room temperature. It
performs the task of automatic reduction of error to zero, irrespectiTe o f the situation
created by disturbance.
Working Principle: It contains a fluid which is able to e ^ a n d or contract due to
temperature change, which causes the sni^ - action of a switch that makes switching-
ON or OFF ofthe heat source.
, Problem 1.03PP
A machine for making paper is diagrammed in Fig. There are two main parameters under
feedback control: the density of fibers as controlled by the consistency of the thick stock that
flows from the headbox onto the wire, and the moisture content of the final product that comes
out of the dryere. Stock from the machine chest is diluted by white water returning from under the
wire as controlled by a control valve {CV).A meter supplies a reading of the consistency. At the
“dry end” of the machine, there is a moisture sensor. Draw a block diagram and identify the nine
components listed in Problem part (d) for the following:
(a) Control of consistency
(b) Control of moisture
Figure A papermaking machine
Figure A papermaking machine
Watt’s steam engine with fly-ball governor
In each case, indicate the location of the elements listed below and give the units associated with
each signal.
• The process
• The process desired output signal
• The sensor
• The actuator
• The actuator output signal
• The controller
• The controller output signal
• The reference signal
• The error signal
Step-by-step solution
step 1 of 13
(a)
Step 2 of 13
Figure 1 shows the general block diagram to understand the process of the system. The nine
components listed below are identified in figure 1.
• Process
• Process desired output signal
• Sensor
• Actuator
• Actuator output signal
• Controller
• Controller output signal
• Reference signal
• Error signal
Actuating Actuator
signal ou^ut signal
Figure 1
step 3 of 13
Draw the block diagram for the figure 1.12 in the textbook to understand the process of control of
consistency.
Step 4 of 13 ^
Error Actuator
Paper
consistency
Solutions PDF Manual
, Problem 1.01PP
Draw a component block diagram for each of the following feedback control systems,
(a) The manual steering system of an automobile
(b) Drebbel’s incubator
(c) The water level controlled by a float and valve
(d) Watt’s steam engine with fly-bail governor
In each case, indicate the location of the elements listed below and give the units associated with
each signal.
In each case, indicate the location of the elements listed below and give the units associated with
each signal.
• The process
• The process desired output signal
• The sensor
• The actuator
• The actuator output signal
• The controller
• The controller output signal
• The reference signal
• The error signal
Notice that in a number of cases the same physical device may perform more than one of these
functions.
Step-by-step solution
step 1 of 4
(A).
Manual Steering Systems
Step 2 of 4
(B)
Step 3 of 4
(c)
Set water
leveKRef Input)
(CorMleror
■ Actuator o/p)
Water
Ftootvatve Tank Water level
Floating (process)
Offloat
(Sensor+contioller+Actualor)
"Water Level Controller
Step 4 of 4
(D)
, Problem 1.02PP
Identify the physical principles and describe the operation of the thermostat in your home or
office.
Step-by-step solution
step 1 of 1
Thermostat is used as the sensing element for controlling the room temperature. It
performs the task of automatic reduction of error to zero, irrespectiTe o f the situation
created by disturbance.
Working Principle: It contains a fluid which is able to e ^ a n d or contract due to
temperature change, which causes the sni^ - action of a switch that makes switching-
ON or OFF ofthe heat source.
, Problem 1.03PP
A machine for making paper is diagrammed in Fig. There are two main parameters under
feedback control: the density of fibers as controlled by the consistency of the thick stock that
flows from the headbox onto the wire, and the moisture content of the final product that comes
out of the dryere. Stock from the machine chest is diluted by white water returning from under the
wire as controlled by a control valve {CV).A meter supplies a reading of the consistency. At the
“dry end” of the machine, there is a moisture sensor. Draw a block diagram and identify the nine
components listed in Problem part (d) for the following:
(a) Control of consistency
(b) Control of moisture
Figure A papermaking machine
Figure A papermaking machine
Watt’s steam engine with fly-ball governor
In each case, indicate the location of the elements listed below and give the units associated with
each signal.
• The process
• The process desired output signal
• The sensor
• The actuator
• The actuator output signal
• The controller
• The controller output signal
• The reference signal
• The error signal
Step-by-step solution
step 1 of 13
(a)
Step 2 of 13
Figure 1 shows the general block diagram to understand the process of the system. The nine
components listed below are identified in figure 1.
• Process
• Process desired output signal
• Sensor
• Actuator
• Actuator output signal
• Controller
• Controller output signal
• Reference signal
• Error signal
Actuating Actuator
signal ou^ut signal
Figure 1
step 3 of 13
Draw the block diagram for the figure 1.12 in the textbook to understand the process of control of
consistency.
Step 4 of 13 ^
Error Actuator
Paper
consistency
