DESIGN FOR SIX SIGMA (DFSS) TEAM AND TEAM SOFTWARE PROCESS (TSP) - Software Design for Six-Sigma: A Roadmap for Excellence - page 251

TABLE 10.3 Simple and Small-Size Project Result

Results using PSP
Simple and Small Size Project

(i) Project Plan Actual

Size (LOC) 1000 1090

Effort (People) 2 2

Schedule (Weeks) 4 3

Project Quality
(Defect/KLOC removed in phase)
Simple and Small Size Project

Integration 0.001 Defect/KLOC 0.001 Defect/KLOC

(ii) System Test 0.001 Defect/KLOC 0.000 Defect/KLOC

Field Trial 0.000 Defect/KLOC 0.000 Defect/KLOC

Operation 0.000 Defect/KLOC 0.000 Defect/KLOC

Electronic Control Unit and Sensor Interfaces: This section details requirements,
related to interfacing of position sensors, temperature sensors, and current sen-
sors with an electronic control unit.
Position Sensors: Two encoders were used in this application to sense the posi-
tion of the steering control. A resolver was used to sense motor rotation direction
and determine the revolution per minute for controls.
Encoder—type, operating range, resolution, supply, number of sensors re-
quired, interface, placement, and enclosure requirements.
Resolver—for motor position—type, operating range, resolution, supply, and
number of sensors required, interface, placement, and enclosure requirements.
Temperature Sensor:
Motor temperature—type, operating range, resolution, supply voltages, re-
quired number of sensors, interface, placement, and enclosure requirements.
Inverter temperature—type, operating range, resolution, supply voltages,
number of sensors required, interface, placement, and enclosure requirements.
Current Sensor:
Motor Current Measurement—type, operating range, resolution, supply volt-
ages, number of sensors required, interface, placement, and enclosure require-
ments.
Motor Information (not part of interfaces): To provide a general idea of the
type of motor used in this application, typical motor specifications also were
provided, which were not directly required for hardware interface purpose. Only
a software variable to sense the current and voltages of the three phases of the
motor as well as the output required voltage and current to drive the motor were
required to be calculated and to be sent to the Motor Control Unit.