ETAS ES5340.2, Руководство пользователя

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ES5340.2 Electric Drive Simulation Board -User’s Guide 43
ETAS Hardware Description
The following illustration shows the schematic circuit diagram of a digital input.
Fig. 3-8 Schematic circuit diagram of a digital input
3.6.2 Configuring the Digital Inputs
Six of the digital inputs are used to measure the gate control of the IGBT of the
inverter; additional inputs can be used to measure DC/DC converter control, for
example.
After you add the "ES5340-Digital-In" item to the hardware configuration, the
following items are available:
• ES5340-Dig-In-HW
For configuring the measurement of inverter gate signals
• ES5340-Dig-In-Inverter-Meas
If a model is run on the Real-Time PC, an item must be added for measure-
ment of the inverter gate signals from the ECU; in addition, a mapping of
the current/voltage values to the analog outputs must be created.
The duty cycles and the period of the PWM signals are measured and for-
warded to the software model. The measurement itself can be synchro-
nized to an external signal or to the PWM period determined by clock
recovery.
• ES5340-Dig-In-Meas
For general measurement of various properties of digital signals (frequen-
cies, duty cycles etc.).
DAC
Low
ECU
GND
InCh0
Galv. Iso.
DAC
High
Galv. Iso.
High Level
Detection
Low Level
Detection
FPGA