Vonsch Quatrofrem Series, Конфигурация и диагностика

Страница: 148 / 180

UNIFREM v.3.41x
10 May 2017 Page 148 from 180
When the optimization output change causes transiting effects which duration period is variable, it
is necessary to delay measuring optimization criteria. Signal from the following parameter is used
to configure measurement conditions:
Parameter ID: 279
SETTINGS
– > FUNCTIONS -> OPTIMIZATION -> Opt. meas. signal
If the measurement should be executed after the ramp function ends, in this signal the value
Converter status negated (negation of the status word) is selected again and the bit
"Accel/Decel. F" is set in the parameter Opt. meas. turns on [160]. This means, that after the
optimization output change, the process is waiting for the ramp function to settle and then a new
measurement for the next optimization step is performed.
To adjust and configure the optimization process, use folowing parameters:
Parameter name ID Description
Optimization
period 13 Measuring period of one step of the optimization algorithm. Time
between individual steps can be extended by the measurement
condition (see "Opt. Measurement signal [279]").
Scan 420 Activate/Deactivate the scan mode of the optimization output when
starting the optimization. It is used to find the starting value of the
optimization output. It searches for the global extremum from multiple
possible extrems by searching the whole range by a maximal step of
0.05.
delta Sign. 255 Defines the value of the maximal allowed variance of the actual value
"Optim. Signal [80]“ from the global extreme. Global extremum is
getting closer to the actual output value from the optimization (scan)
start, which follows the slow changes of the global extremes. After
deflecting the output from the global extremum by the defined value of
"delta Sign.“ a new scan is performed, if it is activated.
Step mode 425 Defines, if the change size of the optimization between two steps
should be solid or variable. Variable step means, that the step size is
based on the adaptivity from the "Optim. Signal [80]“ derivation.
Minim. step 427 Minimal or solid optimization output change between two steps.
Adapt. step gain 743 Defines the intensity of the "Optim. Signal [80]" derivation effect on
the optimization step increase, if the "Step mode" is activated and
“variable” is set.
First direction 426 Sets the starting direction of the optimization from start, if it should
search for output changes up from 0.00 ("from minimum") or down
from 1.00 ("from maximum").