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Intelligent variable-frequency electric actuating mechanism capable of being used for strong magnetic field and diamagnetic method

A technology of electric actuator and strong magnetic field, which is applied in the direction of AC motor control, electrical components, and energy efficiency improvement. It can solve problems such as relay misoperation, reduce design and manufacturing costs, facilitate maintenance and later maintenance, and improve safety. Effect

Active Publication Date: 2020-08-07
搜派师自动化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the relay is susceptible to electromagnetic interference in a strong magnetic field environment and thus malfunctions
[0007] It can be seen from the above that it is difficult for conventional electric actuators to effectively overcome the interference of strong magnetic fields.

Method used

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  • Intelligent variable-frequency electric actuating mechanism capable of being used for strong magnetic field and diamagnetic method
  • Intelligent variable-frequency electric actuating mechanism capable of being used for strong magnetic field and diamagnetic method
  • Intelligent variable-frequency electric actuating mechanism capable of being used for strong magnetic field and diamagnetic method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] An intelligent variable frequency electric actuator that can be used in a strong magnetic field includes a main body of the electric actuator with a signal input port and a signal output port. The connection mode of the signal output port adopts connector connection, refer to Figure 5 The pins of the connector shown and the corresponding connection positions of each pin. Among them, the fourteen good pins are suspended, leaving a safe distance for the voltage source 12V. The control signal pins are: relay1_control, relay2_control, relay3_control, relay4_control, relay5_control; GND_12 is the ground pin. Here, the above-mentioned control signal pin is the carrier of the relay control signal.

[0036] For interference isolation circuits, specifically combine figure 2 , image 3 , Figure 4 to understand.

[0037] The signal output port is connected to an interference isolation circuit, and the interference isolation circuit includes a first voltage diode, a second...

Embodiment 2

[0049] An antimagnetic method employs an intelligent variable frequency electric actuator that can be used in strong magnetic fields. A linear optocoupler is used to form a current detection circuit, and the current signal is converted into a corresponding linear voltage signal and sent to the CPU for processing and calculation to obtain an accurate current value to complete the control of the motor.

[0050] refer to Figure 6 , the main body of the electric actuator monitors important data in real time, including the following steps:

[0051] Step 1: Prestore 3 accurate important data including CRC check in EEProm, and perform CRC calculation on the running data,

[0052] Step 2: Determine whether the CRC data is consistent with the original CRC data, if consistent, the program is executed normally, if not, extract the data in the first backup area;

[0053] Step 3: Determine whether the CRC check of the data in the first backup area is accurate, if yes, restore the runnin...

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PUM

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Abstract

The invention discloses an intelligent variable-frequency electric actuating mechanism capable of being used for a high-intensity magnetic field. The invention belongs to the technical field of electric actuators. The reliability problem of operation in a high-intensity magnetic field environment is solved; according to the technical scheme, the electric actuating mechanism is characterized by comprising an electric actuating mechanism main body with a signal input port and a signal output port, the signal output port is connected with the interference isolation circuit; the interference isolation circuit comprises a first voltage diode, a second diode, a first photoelectric coupler, a second photoelectric coupler, a first resistor, a second resistor and a first voltage source, and the effects of isolating an electromagnetic field and improving the working reliability are achieved by utilizing the connection of the first photoelectric coupler and the second photoelectric coupler.

Description

technical field [0001] The invention relates to the field of electric actuators, in particular to an intelligent frequency-variable electric actuator and an antimagnetic method that can be used in strong magnetic fields. Background technique [0002] For many people, low-frequency magnetic field disturbances are one of the most difficult disturbances to deal with. These disturbances are generated by DC or AC currents. For example, due to the tens of thousands of amperes of current in the induction furnace for steelmaking, a strong magnetic field will be generated around it, and this strong magnetic field will cause the magnetic sensitive devices in the control system to fail. Electrolytic aluminum plants often generate tens of thousands of amperes of current, and the electric actuators running around face such a test. [0003] Passive dry contact relays on electric actuators, magnetic sensitive components such as Hall current sensors, etc. face such interference. In additio...

Claims

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Application Information

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IPC IPC(8): G01R15/22H02P27/04
CPCG01R15/22H02P27/04Y02P10/25
Inventor 陈卫武余威威
Owner 搜派师自动化科技有限公司
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