Amplitude slider

The Amplitude slider sets the level of the minimum gain in the effect. In other words, setting the Amplitude slider to the lowest level (—Inf.) will result in the largest variation in amplitude and the greatest effect Setting the slider to the highest level (0 dB) means that the lowest point will not be low at all and the... 

It is not true that the QCM is blind to nonlinear interactions. The QCM measures a peculiarly weighted average of the force, but it certainly can access nonlinear phenomena via the amplitude dependence of A/ and AT. The QCM probes elastic and dissipative interactions at high frequencies. How relevant these high-frequency interactions are for real world devices, needs to be seen. We know today that things are much different at the MHz scale. We also know that fast processes are important in contact mechanics. Typical phenomena, where high-frequency events are crucial, are the sudden impact of a slider onto a substrate or the advancement of a crack tip in fracture events. At this point, the contact mechanics experiments with the QCM are part of fundamental research, but that may change. 

If the value of C2 is increased (decrease of k), we will see immediately that the system will oscillate with greater amplitude and lower frequency, a typical response since the stiffness is reduced. The same thing can be done for any transfer function of the system, a relationship of any force (effort) or velocity (flow) and any of the two inputs as the sliders are displayed for all the inputs. The ability to study the system parameter sensitivity is a very valuable tool for the study of how the system responds to physical parameter changes, a very important study particularly for the design of control systems. 

For the tribological measurements, the radial position of the slider during the tests was halfway between the inner and outer diameters of the disk, and the pivot-to-center distance was adjusted so that the slider skew angle was close to 0°. The disk rotation was started with the slider suspension on the load/unload ramp just off the edge of the disk. The slider was accessed to the test radius. The pressure control and measurement of the frictional displacement were performed with The National Instruments LabView software on a PC with interface cards. Average displacement and peak amplitude were recorded after each pressure decrement/incre-ment (4000 samples at 20 kHz for 200 ms). The pressure inside the tester was varied linearly from ambient (100 kPa) to 15 kPa and back up to ambient over about 3 min in approximately 1-kPa increments. At the end of the test, the slider was translated back to the load/unload ramp before stopping the disk rotation. 

So n = n (l) is the function of I. To derive a lubrication equation under slider-roll condition for the non-Newtonian model, we adopt the same perturbation method as Dien and Elrod s <1>. By expanding the velocity of fluid using small amplitude parameter, we get ... 

The ExpressFX Amplitude Modulation plug-in has only a Rate, Depth, and Wet/Dry mix slider and lacks the other controls of the XFX version of this plug-in. 

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