Tuned vibration technique by means of standard vibration motors The concrete industry uses a lot of vibration tables to compact concrete. Now vibrators are connected to one single frequency control. That results, however, in the fact that a lot of vibration power is lost due to uncontrolled motion. ATV has developed a system to regulate speed and angular torsion of each vibrator. That system offers a lot of advantages: Control of vibration direction = horizontal vibration to dispense concrete and vertical vibration to compact concrete. Reduced mechanical constraint and power consumption for identical vibration effect. Reduced noise nuisance. Improved vibration in a shorter time = Production gain.