LED chip waxing robot temperature control method

A technology of LED chip and temperature control system, applied in the direction of speed/acceleration control, non-electric variable control, control/regulation system, etc., to achieve the effect of easy control of heating current, high cooling efficiency and short cooling circuit

Inactive Publication Date: 2016-07-13
QILU UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] If the above control method is used in the temperature con

Method used

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  • LED chip waxing robot temperature control method
  • LED chip waxing robot temperature control method
  • LED chip waxing robot temperature control method

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Embodiment Construction

[0015] Referring to the accompanying drawings of the description, the control method of the present invention will be described as follows to control the temperature of the LED chip production process. The specific operations are: 1) Planning the temperature cooling curve. The corresponding relationship between the temperature change of the wax used and the state change of the wax is measured through experiments, and the ideal temperature change curve is fitted by a segmented linear regression method as a planning curve.

[0016] 2) The temperature control plate is heated. When the temperature control workbench of the LED chip waxing robot is not working, the temperature is normal temperature. When the temperature control workbench needs to work, put the paste plate on it, and the temperature control plate will start heating and the temperature will rise to 105°C.

[0017] 3) Then spray wax, patch, pressurize, and start the cooling system.

[0018] 4) Cool down and cool down...

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Abstract

According to the present invention, an LED chip waxing robot temperature control system is designed, and a temperature control is designed according to the system. According to the temperature control method, firstly a method of phased linear regression is used, a regression curve is fitted, the temperature of a wax layer is monitored in real time, the feedforward value of a fuzzy adaptive feedforward controller is preset, the temperature in a cooling process is measured, the measured temperature value and the temperature value at a linear regression corresponding time are compared, the error of the time and an error variable are obtained, according to a preset fuzzy control rule, a feedforward value adjustment amount is determined, if a track error change is still large, the discourse domain interval of the membership function of the fuzzy control rule and the adjustment amount of the feedforward value of each time of adjustment are adjusted. According to the method, the control of the temperature in an LED chip waxing process is realized well, and the production efficiency and product qualification rate of LED chips are improved greatly.

Description

technical field [0001] This control method is mainly applicable to the temperature control in the waxing process of LED chip production. Background technique [0002] During the LED chip placement process, it is necessary to paste the LED chip on a flat paste board, and a layer of wax needs to be applied between the LED chip and the paste board to fix the chip, but in order to paste fully and firmly, the wax layer The temperature change of the cooling process must follow a fixed curve, which requires controlling the temperature of the cooling process. Temperature control is a control process with a large time lag. Scholars at home and abroad have done a lot of research on temperature control, and some have proposed a case reasoning system based on neural network technology to retrieve feature weight coefficients. Automatic learning algorithm and iterative learning technology Some of the initial working condition matching algorithms use the approximate full compensation feed...

Claims

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Application Information

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IPC IPC(8): G05D13/04
Inventor 王佐勋
Owner QILU UNIV OF TECH
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