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A multi-pass control method based on long-distance material conveying device

The technology of a conveying device and control method is applied in the field of multi-transmission control based on long-distance material conveying devices, which can solve problems such as tearing conveyor belts, uneven load distribution, and interference with surrounding equipment, achieve balanced output, reduce downtime rates, Avoiding the effect of local drive point overload

Active Publication Date: 2019-04-26
河南华东工控技术有限公司
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Problems solved by technology

[0006] The above two methods have a certain degree of synchronization, but during the operation of the equipment, it is often easy to tear the conveyor belt
Since the distance between the front end and the tail end of the long-distance conveyor belt is relatively long, if the frequency conversion cabinets are arranged nearby according to the transmission device, and the above method 1 is used for control, the load distribution of each transmission point will be uneven, which will easily cause frequency conversion overvoltage or overcurrent. If the frequency conversion cabinets are placed together and controlled by the above method 2, the output cables of the motor will inevitably be increased, and the frequency converter needs to be used with reduced capacity, which will cause EMC interference to the surrounding equipment and greatly increase the investment cost

Method used

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  • A multi-pass control method based on long-distance material conveying device
  • A multi-pass control method based on long-distance material conveying device

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Embodiment Construction

[0056] The present invention provides a multi-pass control method based on a long-distance material conveying device, the steps of which are as follows:

[0057] S1: Synchronous control system access: Install frequency converter 4 in each transmission device of the long-distance material conveying device, so that the motor speed measurement feedback encoder in each transmission device is connected to frequency converter 4, and frequency converter 4 is controlled by the load distribution algorithm Device 1 is electrically connected;

[0058] S2: Data collection: collect the current values ​​of voltage, current, speed and torque of each frequency converter, and transmit the collected data to the load distribution algorithm controller 1;

[0059] S3: Calculation of the speed and torque of each frequency converter: transmit the data collected in step S2 to the load distribution algorithm controller 1 through optical fiber communication, call the load distribution control algorithm...

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Abstract

The invention provides a multi-transfer control method based on a long-distance material transmission device. The control method comprises the following steps of S1, synchronously controlling system access; S2, acquiring data; S3, calculating a speed and a torque of each frequency converter; and S4, adjusting a synchronous output speed of the frequency converter. By employing the control method, load allocation is performed on each transmission point, torque equilibrium of each transmission point is ensured, and overload of a local transmission point is prevented.

Description

technical field [0001] The invention provides a control method, which is very suitable for multi-drive control of long-distance material conveying devices such as assembly line ports, docks, cargo yards, and mines. Background technique [0002] Long-distance material conveying device is a common equipment for long-distance material transportation (such as automobile equipment production line, loading and unloading cargo transportation, air parcel transmission, etc.) in ports, docks, freight yards, mines, and assembly lines, especially for long-distance transportation with a length of more than 1 km device. This type of device is composed of a conveyor belt, a conveyor belt support frame, a conveyor belt support roller set, and multiple transmission devices. According to the length of the conveyor belt and the characteristics of uneven load points, the specific installation position and quantity of the entire transmission device are based on production requirements. To deter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P27/04H02P5/74
CPCH02P5/74H02P27/04
Inventor 杜少雄孙肇伟
Owner 河南华东工控技术有限公司
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