| 摘要 |
The control system is particularly usable with extended vibration conveyors and permits the installation of multiple vibratory drive units (18, 20) comprised of one or more vibratory modules. Each module comprises a motor (34, 42), one or more shafts (22, 24, 26) mounting eccentric weights (50, 52, 54, 56), and a shaft encoder device (58) monitoring the relative position of each shaft (22, 24, 26). One shaft, a master shaft, is driven continuously at a predetermined speed from which the actual relative positions of the shafts are compared. A control device (68) is programmed with the predetermined relative shaft positions and receives signals from the various encoder devices (58) indicative of the actual relative positions of the shafts (22, 24, 26) and causes one or more motor control devices to alter the speed of each motor (34, 42) until the actual relative position essentially matches the programmed relative position.
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