Soft dB Zen-Ten User guide - Manual (Page 6)

User manual for the ZEN 3-channel X-LMS controller Soft dB inc.
Figure 4: Schematic of the ZEN 3-channel control system from Soft dB
The real-time algorithm running on the DSP board synthesizes the output signals to
minimize the noise measured by the three error sensors. The X-LMS algorithm with feed-
forward and a filtered reference LMS optimization is used to minimize the error signals.
This controller can be used in coupled or uncoupled mode to take into account the
interaction between each channel (see section 3.0 for more details). The control system
includes a PC user interface for adjusting algorithm parameters and analyzing the control
results. Note that the ZEN control system can be used stand-alone if you have the
Autonomous Mode option. With this option, the ZEN controller can automatically start
the control when power-up. But before, the ZEN controller must be adjusted and
configured with the PC interface.
The current documentation contains detailed explanations of how the control system
works. Section 2.0 explains the installation of the PC user interface and the USB driver
for the DSP board. Section 3.0 provides details on the control algorithm running on the
DSP. Section 4.0 shows how the PC interface works. This last section also offers a step-
by-step procedure for applying a control on a given physical system.
ZEN User Manual p. 6