As previously announced, ACL Holdings entered into an agreement on March 9, 2012 with Tomen to create the joint venture ATMD, which became effective as of April 1, 2012.
Starting April 1, 2012, ACL is distributing Samsung's semiconductor and LCD products through ATMD, a newly established joint venture with Tomen Devices.
The force f acting between the ATMD and the main system is measured in real time using a piezoelectric force sensor.
where [x.sub.a] and [x.sub.p] represent the vibration displacements of the ATMD mass block and main system, respectively.
Equation (8) determines the force feedback control strategy of the ATMD. As G(s) has a pole at s = 0 that affects the system stability, a nonzero pole needs to be established to improve the stability.
The ATMD power consumption is also a factor that needs to be considered in the design.
In general, V of the ATMD mass is much greater than [V.sub.p], so the second term in (10) can be ignored.
Figure 4 shows the damping curves for the ATMD with the natural frequency set at 30 Hz, 40 Hz, and 50 Hz in the main system.
Figure 5 shows a comparison of the ATMD damping when different natural frequencies are set by setting the mass to 0.5 kg, 1 kg, and 2 kg in the main system.
Analysis of Power Consumption Required by the ATMD. Power consumption strongly reflects the nature of the stroke and active force.
For vector X, [X.sub.a] and [X.sub.b] are, respectively, the Laplace transforms of the vibration displacements at the ATMD and the ATMD installation points.