Project: Adaptive Cruise Control (ACC) System TPM Charts and Analysis

This project involves the creation and analysis of Time Performance Metrics (TPM) charts for an Adaptive Cruise Control (ACC) system. The assignment requires generating charts for Mean Time Between Failure (MTBF) and Range Accuracy, using provided data and calculations. The student needs to address why the original plan is missing for MTBF, explain the range performance issues, and describe the actions a lead systems engineer should have taken to prevent the problems, including when those actions should have been taken. The project emphasizes the use of Excel for chart creation and requires the inclusion of units, threshold, objective, actual to date (ATD), and planned values on the charts. The project also includes the use of Estimated, Calculated and Measured values for the TPM charts.

Assignment 3 - TPM
As the lead systems engineer on the Adaptive Cruise
Control system, you are required to put together TPM
charts for an upcoming Program Management Review.
Given the following data sets in the excel file provided,
please generate time history charts for the two critical
TPMs below.Requirement # 1: The ACC shall meet a
Mean Time Between Failure (MTBF) of 1,970 hours.
Requirement # 2: The ACC sensor shall report the
range of the forward vehicle to an accuracy of 20 feet
as compared to the true range.
In addition to the two charts, please answer the
following questions:
1. Why is there no original and current plan shown for
the MTBF TPM?
2. What went wrong with the range performance? As the
lead systems engineer, what should you have done to
recognize and avert the problem shown by the data in
this TPM? And when should you have done this?
You can use Excel to generate the charts. See
Hints below.

 Hint's for HW#
ATD = Achieved to date
The percentages are how close the estimate/calculations/measurements
get to the goal/objective desired
 'estimated' is based on pre design assumptions from like/similar
components/systems
 'calculated' is based on models/sims of planned design
 'measured' is actually achieved from testing designed component/system
- essentially determining performance as you progress through life cycle.
In order to plot the TPM Charts you may want to make new columns where
you calculate the ATD Estimated; ATD Calculated; and ATD Measured
and use these new columns for plotting.
In the past students had problems with the TPM charts because they:
 failed to indicate the units and term (MTBF in hours and Range” Accuracy’
in feet) on the y-axis,
 leaving out one of the key factors to plot: Threshold, Objective, ATD,
and/or Planned.
 not including the “Current Plan” on the accuracy chart
 failing to put the proper name of the TPM on or near the chart.
Below is a hint to the type of Chart Axis you could use with the first few
columns filled in: