BQFR
ASCII - Command | BQFR |
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Syntax Transmit | BQFR [Data] |
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Syntax Receive | BQFR <Data> | Available in |
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Type | Variable rw | MMI | No | |
ASCII Format | Float | CANBus Object Number | 3665 (hex) | |
DIM | - | PROFIBUS PNU | 1957 (dec) IND = 0000xxxx (bin) | |
Range | 0.1 .. 10 | DPR | 357 (dec) | |
Default | 2.5 |
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Opmode | All | Data Type Bus/DPR | Integer32 | |
Drive State | - | Weightning | 1000 | |
Start Firmware | 4.00 |
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Configuration | No | Revision | 1.4 | |
Function Group | Velocity Controller | EEPROM | Yes | |
Short Description | Frequency Ratio of the Bi-quad Filter | |||
Description
The BQFR defines the frequency ratio of the Bi-quad filter, which is the ratio between the resonance frequency OmegaR and the anti-resonance frequency OmegaAR. That is: .
- Here, the anti-resonance frequency OmegaAR and the resonance frequency OmegaR can be respectively read from the bode plot of the velocity control loop.
How to make the bode plot and to set Bi-quad filter please reference the application note Suppression of Torsional Oscillations.