Start-Stop Generator
Generating the jog signal.
blockType: SubSystem
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Path in the library: |
Description
Block Start-Stop Generator generates the start/stop signal required for operation of signal generators. The signal is fed to the start/stop input port of these blocks. The signal is used to start and stop the experiment to determine the frequency characteristics of the system. The block generates a signal that changes from 0 to 1 and from 1 to 0. Changing the signal from 0 to 1 starts the experiment, changing the signal from 1 to 0 stops the experiment.
Ports
Input
#
enable -
enable signal
scalar
Details
Unit activation input signal.
| Data types |
|
| Support for complex numbers |
No |
#
start times -
start times
scalar | vector
Details
The moment(s) of the experiment start time. The unit generates a signal that changes from 0 to 1 at a given moment(s) of time and changes from 1 to 0 after the passage of the time period defined by the Duration (sec) parameters.
Dependencies
To use this port, set the parameters External time vector to External time vector. Source of start time points value External time vector.
| Data types |
|
| Support for complex numbers |
No |
#
y -
steady-state value
scalar | vector
Details
The steady-state value of the output of the system under study (control object). The unit determines the current state of the system and, using this information, generates a start-stop signal.
Dependencies
To use this port, set the parameters Time after reaching steady-state. Source of start time points to `Time after reaching steady-state'.
| Data types |
|
| Support for complex numbers |
None |
Output
#
start/stop -
start/stop signal
`scalar
Details
Signal to start and stop the experiment. The signal changes:
-
from a negative value or
0to a positive value at the time(s) defined by the start times parameter or at the times defined by the parameters of the Steady-state settings section. -
from positive value to
0or negative value after passing of the time period defined by the Duration (sec) parameters.
When the enable enable signal is 0, no start-stop signal is generated.
| Data types |
|
| Support for complex numbers |
None |
Parameters
Main
# Sample Time — sampling period
Details
The sampling period of the generated signal.
| Default value |
|
| Program usage name |
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| Tunable |
No |
| Evaluatable |
Yes |
Start-Stop Signal Settings
#
Source of start time points —
way of specifying moments in time
External time vector | Time after reaching steady-state
Details
Method of setting the time moments of the beginning of signal generation:
-
External time vector- explicit setting of time moments through the start times port. -
Time after reaching steady-state- setting of time moments by usage of information about the output signal of the investigated system (control object), supplied through the y port, and parameters of the Steady-state settings section.
| Values |
|
| Default value |
|
| Program usage name |
|
| Tunable |
No |
| Evaluatable |
Yes |
# Duration (sec) — signal duration
Details
The duration of the generated signal.
| Default value |
|
| Program usage name |
|
| Tunable |
No |
| Evaluatable |
Yes |