Vibration material feeding controller with self-adapting frequency self maintaining amplitude and its control method

Abstract

This ivnention relates to a method and a cotnroller for vibration feeder with self-frequency adaptation and self-amplitude control. The controller consists of a monolithic computer, a photoelectric position sensor, an exciter, a display, a keyboard, an RS232 interface. The control emthod is based on phase feedback, and carried out by using a photoelectric position sensor to collect position and phase signals of the vibration feeder, using a computer to process the signals, sending them to the display and RS232 interface and the exciter, and actuating the feeder.

Description

technical field [0001] The invention relates to a frequency self-adaptive vibration feeder control device and a control method based on the principle of phase feedback, and belongs to the technical field of automatic feeder manufacture. Background technique [0002] The vibrating feeder generates mechanical vibration of a certain frequency through the electromagnetic excitation device, so that the conveyed workpieces on it are arranged and displaced in a certain direction in an orderly manner, so as to achieve the purpose of material transportation, arrangement and feeding. Since the mechanical system has its own natural frequency, when the excitation generated by the excitation circuit of the feeder is equal to the natural frequency of the vibrating mechanical system, the vibrating feeder working in the resonance state will have the greatest working efficiency. [0003] Traditional vibrating feeders usually use a fixed excitation frequency direct...

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Problems solved by technology

Due to changes in the quality, mechanical structure, natural frequency and other mechanical characteristics of the feeder itself, as well as the quality and friction of the material, including the frequency characteristic drift of the excitation oscillation circuit itself due to environmental temperature, time and other factors, etc., The amplitude of the device working at the resonance point is very unstable, so it cannot be used in practice

[0004] These feeder devices without a feedback mechanism are unstable due to the drift between the excitation frequency and the natural frequency of the system. Even if the resonance state is reached through manual adjustment, the transmission speed will be unstable due to the influence of damping and other parameters. low efficiency

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