#
#
#
#
#
Fill in the code for the functions below. main() is already set up
to call the functions with a few different inputs,
printing 'OK' when each function is correct.
The starter code for each f
# You are developing the help desk application of a c/ompany.
# Request of issues will be stored to be served on a first-come first-serviced
basis.
# For each issue, the name of the employee, service
#
#
#
#
#
Fill in the code for the functions below. main() is already set up
to call the functions with a few different inputs,
printing 'OK' when each function is correct.
The starter code for each f
#
#
#
#
#
Fill in the code for the functions below. main() is already set up
to call the functions with a few different inputs,
printing 'OK' when each function is correct.
The starter code for each f
# Implement following functions for Stack using List
def push(lst, item):
lst.insert(0,item)
# Adds element x at the top of the stack
return lst
def pop(lst):
x=lst[0]
lst.pop(0)
# Removes and returns
#
#
#
#
#
Fill in the code for the functions below. main() is already set up
to call the functions with a few different inputs,
printing 'OK' when each function is correct.
The starter code for each f
DL-15 (7-16)
OCCUPATIONAL LIMITED LICENSE (OLL) PETITION
Bureau of Driver Licensing P.O. Box 68689 Harrisburg, PA 17106-8689
Please review the following pages for instructions on completing this petit
ACCT505
Project 2
Capital Budgeting Problem Solution
Rachel Burns
Johnnie & Sons Paints Inc.
Data:
Cost of new equipment
Expected life of equipment in years
Disposal value in 5 years
Life productionnu
Time Management Calendar
To get an accurate picture of all your responsibilities, you should complete a time management calendar to visualize how
you are spending your time. You will need to include y
MKTG 522 Peer Review Sheet
Team:
Section:
Reviewer's name:
MKTG 522 - Dr. DeNigris
Please insert the names of
your team members across the
top. You can type the names
over the Team Member and #.
Peer
Career Development Portfolio
Created by: Ashanta Savage
GM548 Career Success Strategies
My Work Philosophy
To perform under the highest ethical standards
Exhibit a professional, friendly and respect
The approach to dynamic system problem can be
listed as follow:
1. Define the system and its components
2. Formulate the mathematical model and list the
necessary assumptions.
3. Write the differentia
Introduction
to Control Systems
11 INTRODUCTION
Control theories commonly used today are classical control theory (also called con-
ventional control theory), modern control theory, and robust control
Sensitivity of control systems
Suppose system G(s) changes to G(s)+G(s) due to
the environment, ageing
Y(s) changes to Y(s)+Y(s)
Y (G ( s ) + G ( s ) = Y (G ( s ) +
For Open Loop
For Closed Loop
dY
CHAPTER 9
9.0 TRANSIENT
RESPONSE
AND
STEADY
STATE
ERROR
ANALYSIS
9.1
Introduction:
In most practical systems, the input signal is not known ahead
of time and can be random in nature.
It is only in som
CHAPTER
5
5.0 INTRODUCTION TO CONTROL SYSTEMS
5.1
Introduction
Automatic Control has played a vital role in the advancement
of engineering and Science. For example automatic control is
essential in su
Applying input to cause system variables to
conform to desired values called the
reference.
- Cruise-control car: f_engine(t)=? speed=90
kph
E-commerce server: Resource allocation?
T_response=5 sec
10-Jan-15
The time response of a control system consists of two
parts:
1. Transient response
2. Steady-state response
- from initial state to the final
- the manner in which the
state purpose of contr
OPEN-LOOP CONTROL
Output quantity does not influence the
input quantity hence has no effect on
control action
Output is neither measured nor
feedback for comparison with input
Each input has correspon
Goal: Determining whether the system is stable or
unstable from a characteristic equation in
polynomial form without actually solving for the
roots.
Rouths stability criterion is useful for determin
CHAPTER 10
10.0 STABILITY ANALYSIS
10.1 Concept of stability
The stability of control system whether continuous or
discrete is determined by its impulse response to inputs
or disturbances. A stable sy
Signal Flow Graphs
SIGNAL FLOW GRAPH
Signal-Flow Graph Models
Block diagram reduction procedures are
sometimes difficult to implement.
Another method (Developed by Mason) for
determining the relatio
Laplace Transform Inversion
Inverse
Laplace
Transformation
(i) Find the partial fraction expansion of F(s)
(ii) Obtain the inverse transform f(t) using the
transform tables.
Case I: Simple Real Roots
THE RATIONALE FOR
MATHEMATICAL MODELING
DYNAMIC VERSUS STEADYSTATE MODEL
Dynamic model
Describes time behavior of a process
Changes in input, disturbance, parameters, initial
condition, etc.
Descri
Any physical control suffers from steady
state errors in response due to certain inputs
Errors can be attributed to:
Transient period due to changes in input
Components imperfections
Static friction,
5
Transient and Steady-State
Response Analyses
51 INTRODUCTION
In early chapters it was stated that the first step in analyzing a control system was to derive a mathematical model of the system. Once