Dummy introduction text.
This chapters describes the system of interest at the first decomposition level. That is, it describes 2 components which play a role within the environment in which the system of interest must operate and the (functional) interactions between those components. In Figure the associated design-structure-matrix (DSM) is shown. The DSM shows the dependencies between the elements that are relevant to this decomposition level.
This section describes drive-mechanism.
Properties:
The following properties are specified for drive-mechanism:
| provide-torque |
|---|
| Drive-mechanism must provide torque to pump. |
| Comments |
| Dummy comment. |
| drive-mechanism → convert-power-potential |
|---|
| Drive-mechanism must convert power-potential into torque. |
| Subordinate function specifications |
| drive-mechanism → power-source → convert-potential drive-mechanism → motor → convert-power drive-mechanism → bs-provide-power |
| drive-length-target |
|---|
| Drive-length must be equal to pump-length . |
| IP68 |
|---|
| Drive-mechanism must be IP68 compliant. |
| cost |
|---|
| Drive-mechanism must be affordable. |
| reliability |
|---|
| Provide-torque must be very reliable. |
| drive-mechanism → power-source → efficiency-model |
|---|
| model definition name |
| battery-efficiency-model |
| related variables |
drive-mechanism → power-potential drive-mechanism → power |
Drive-mechanism is composed of the following sub-components:
This section describes pump.
Comments
Can be sourced by manufacturer XYZ. Part number CFG.PMP.0.1
Properties:
The following properties are specified for pump:
| pump → convert-torque |
|---|
| Pump must convert torque into water-flow. |
| min-water-flow |
|---|
| Water-flow must be at least 1.0 [L/s]. |
| max-water-flow |
|---|
| Water-flow must be at most 3.0 [L/s]. |
| drive-length-target |
|---|
| Drive-length must be equal to pump-length . |
| reliability |
|---|
| Provide-torque must be very reliable. |
| stability |
|---|
| Water-flow must be very stable. |
This chapters describes the system of interest at decomposition level 2 and introduces 4 additional components. In Figure the associated design-structure-matrix (DSM) is shown. The DSM shows the dependencies between the elements that are relevant to this decomposition level.
This section describes power-button. This component is a sub-component of drive-mechanism.
Properties:
The following properties are specified for power-button:
| drive-mechanism → pb-send-signal-01 |
|---|
| Power-button must send power-button-state to power-source. |
| drive-mechanism → power-button → convert-force-01 |
|---|
| Power-button must convert actuation-force into power-button-state. |
| drive-mechanism → power-button → button-state-behavior |
|---|
Case Pressed: when:
then:
when:
then:
|
This section describes kill-switch. This component is a sub-component of drive-mechanism.
Properties:
The following properties are specified for kill-switch:
| drive-mechanism → ks-send-signal-02 |
|---|
| Kill-switch must send kill-switch-state to power-source. |
| drive-mechanism → kill-switch → convert-force-01 |
|---|
| Kill-switch must convert actuation-force into kill-switch-state. |
| drive-mechanism → kill-switch → button-state-behavior |
|---|
Case Pressed: when:
then:
when:
then:
|
This section describes power-source. This component is a sub-component of drive-mechanism.
| drive-mechanism → bs-provide-power |
|---|
| Power-source must provide power to motor. |
| drive-mechanism → power-source → convert-potential |
|---|
| Power-source does convert power-potential into power. |
| drive-mechanism → power-source → toggle-power |
|---|
Case on: when:
then:
when no other case applies, then:
|
| drive-mechanism → power-source → kill-power |
|---|
Case emergency: when:
then:
|
| drive-mechanism → power-source → max-power |
|---|
| Power must be at most 400 [W]. |
| drive-mechanism → power-source → efficiency-model |
|---|
| model definition name |
| battery-efficiency-model |
| related variables |
drive-mechanism → power-potential drive-mechanism → power |
| drive-mechanism → power-source → heat-model |
|---|
| model definition name |
| battery-heat-generation-model |
| required variables |
drive-mechanism → power drive-mechanism → power-source → heat-generation-coefficient |
| returned variables |
| drive-mechanism → power-source → heat-flux |
This section describes motor. This component is a sub-component of drive-mechanism.
| provide-torque |
|---|
| Motor must provide torque to pump. |
| Comments |
| Dummy comment. This goal function requirement automatically migrated from drive-mechanism. |
| drive-mechanism → motor → convert-power |
|---|
Motor must convert power into torque, with subclauses:
|
| Subordinate function specifications |
| drive-mechanism → motor → rotor → ba-convert-flux-and-power |
| drive-mechanism → power-source → max-power |
|---|
| Power must be at most 400 [W]. |
| reliability |
|---|
| Provide-torque must be very reliable. |
| drive-mechanism → power-source → efficiency-model |
|---|
| model definition name |
| battery-efficiency-model |
| related variables |
drive-mechanism → power-potential drive-mechanism → power |
| drive-mechanism → power-source → heat-model |
|---|
| model definition name |
| battery-heat-generation-model |
| required variables |
drive-mechanism → power drive-mechanism → power-source → heat-generation-coefficient |
| returned variables |
| drive-mechanism → power-source → heat-flux |
Motor is composed of the following sub-components:
This chapters describes the system of interest at decomposition level 3 and introduces 2 additional components. In Figure the associated design-structure-matrix (DSM) is shown. The DSM shows the dependencies between the elements that are relevant to this decomposition level.
This section describes rotor. This component is a sub-component of drive-mechanism → motor.
| provide-torque |
|---|
| Rotor must provide torque to pump. |
| Comments |
| Dummy comment. This goal function requirement automatically migrated from drive-mechanism. |
| drive-mechanism → motor → rotor → ba-convert-flux-and-power |
|---|
| Rotor must convert magnetic-flux and power into torque. |
| drive-mechanism → power-source → max-power |
|---|
| Power must be at most 400 [W]. |
| reliability |
|---|
| Provide-torque must be very reliable. |
| drive-mechanism → power-source → efficiency-model |
|---|
| model definition name |
| battery-efficiency-model |
| related variables |
drive-mechanism → power-potential drive-mechanism → power |
| drive-mechanism → power-source → heat-model |
|---|
| model definition name |
| battery-heat-generation-model |
| required variables |
drive-mechanism → power drive-mechanism → power-source → heat-generation-coefficient |
| returned variables |
| drive-mechanism → power-source → heat-flux |
This section describes stator. This component is a sub-component of drive-mechanism → motor.
| drive-mechanism → motor → st-provide-flux |
|---|
| Stator must provide magnetic-flux to rotor. |
Dummy conclusion text.
| Variable | Type | Domain | Units | Clarification |
|---|---|---|---|---|
| drive-length | Spatial | 0.0 ≤ x | ||
| drive-mechanism → kill-switch → actuation-force | Mechanical-energy-flow | Nm | ||
| drive-mechanism → kill-switch → button-position | Spatial | 0.0 ≤ x | ||
| drive-mechanism → kill-switch-state | Status-signal | enumeration of Pressed and NotPressed | ||
| drive-mechanism → motor → conversion | Efficiency | 0.0 ≤ x≤ 1.0 | ||
| drive-mechanism → motor → magnetic-flux | Magnetic-energy-flow | |||
| drive-mechanism → power | Electrical-energy-flow | W | ||
| drive-mechanism → power-button → actuation-force | Mechanical-energy-flow | Nm | ||
| drive-mechanism → power-button → button-position | Spatial | 0.0 ≤ x | ||
| drive-mechanism → power-button-state | Status-signal | enumeration of Pressed and NotPressed | ||
| drive-mechanism → power-potential | Chemical-energy-flow | 0.0 ≤ x | ||
| drive-mechanism → power-source → heat-flux | Thermal-energy-flow | |||
| drive-mechanism → power-source → heat-generation-coefficient | Constant | |||
| pump-length | Spatial | 0.0 ≤ x | ||
| torque | Mechanical-energy-flow | Nm | must be high. | |
| water-flow | Liquid-material-flow | L/s |