According to the design method of dynamic surface sliding-mode control, the first dynamic error
surface is defined as follows:
6 shows the value of dynamic error
of position of actuator in absence (curve t) and presence (curve 2) of faults.
. In this research, the dynamic test deals with the working accuracy of different measuring modes.
* by increasing k the response time and the dynamic error
[DELTA][V.sub.dc] became very important,
By utilizing (27), the dynamic error
(31) can be reduced by the following form:
Then the spectral density of random dynamic error
adjustment according to Fig.
Finally, the short-run dynamic error
correction model is estimated on the basis of identified cointegrated vectors.
It has been established that for a reduction of 0.3%-0.5%, the dynamic error
increases from 0.93% to 1.98%.
In control problems, control input U is used to cause the dynamic error
to decrease to zero, as the time between MS and SS increases.
Therefore, this method only needs to import the initial value signal of the photovoltaic system with faults into the chaotic synchronization system according to the variance in initial value, to capture the variance in dynamic error
, and then it is imported into the extension theory to effectively distinguish the fault state.
Under effecting of the control strategy (18), the dynamic error
equation of closed loop from (19) is
According to the research of Engle and Granger (1987), we can use dynamic error
correction model to analyze short-term and long-term causality of variables.