DESIGN FOR SIX SIGMA (DFSS) TEAM AND TEAM SOFTWARE PROCESS (TSP) - Software Design for Six-Sigma: A Roadmap for Excellence - page 257

TABLE 10.5 Moderately Complex and Medium-Size Project Result

Results using PSP and TSP
Moderately complex & Medium Size Project

(i) Project Plan Actual

Size (LOC) 10000 9500

Effort (People) 8 6

Schedule (Weeks) 8 8

Project Quality
(Defect/KLOC removed in phase)
Moderately Complex & Medium Size Project

Integration 0.001 Defect/KLOC 0.06 Defect/KLOC

(ii) System Test 0.001 Defect/KLOC 0.003 Defect/KLOC

Field Trial 0.000 Defects/KLOC 0.001 Defect/KLOC

Operation 0 Defects/KLOC 0.001 Defect/KLOC

changes that were required in the diagnostics and interfaces to match the vehicle
requirements because of new safety standards adoption by vehicle architecture after
lengthy discussions with different program teams working for the same vehicle.
Overall the example project was integrated successfully with the rest of the vehicle
subsystems. Different teams carried out vehicle-level integration and then the final
vehicle testing that was not the scope of this chapter. Table 10.5 shows that the results
were near the estimated but not that encouraging while comparing them with Six
Sigma. Looking at these results and system performance issues, in the later stage,
it was determined that the current embedded controls design and its implementation
does not provide industry-required reliability and quality, and thus, more efforts were
asked to be put in by management.

10.4.3 Complex and Large Project

In this case, a complex and large-size embedded controls project with a software
size in the range of 100 KLOCs was chosen to evaluate the efficiency of PSP and
TSP (Shaout & Chhaya, 2008), (Chhaya, 2008). While following these processes, the
Spiral Model was used during the entire life cycle of this embedded controls project
as shown in Figure 10.9.

10.4.3.1 Deployment Example: Alternative Energy Controls and
Torque. Arbitration Controls. The scope of this example application was to
design alternative energy controls and hybrid controls for a hybrid system of a ve-
hicle to store and provide alternative power to the internal combustion engine (ICE)
and to do arbitration of torque for the vehicle.
DFSS Identify Phase— During the early start of this project, several discussions
were held between various personnel from the internal combustion controls team,
electrical motor controls team, high-voltage electrical team, vehicle system controls