3D printer temperature control system

A technology of temperature control system and 3D printer, applied in temperature control using analog comparator, temperature control using electric mode, etc., can solve problems such as increasing CPU workload, response conflict, program running away, etc., to achieve beneficial functions The effect of scaling, reducing CPU load, and improving real-time performance

Active Publication Date: 2017-02-22
CENT SOUTH UNIV
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Problems solved by technology

This will undoubtedly greatly increase the workload of the CPU, and it will easily lead to conflicts with the

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  • 3D printer temperature control system
  • 3D printer temperature control system
  • 3D printer temperature control system

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with the accompanying drawings and examples.

[0047] figure 2 It is a schematic diagram of the hardware structure of the temperature control system of the 3D printer according to the embodiment of the present invention. The temperature control system includes a bus interface module, a register file, a PID calculation module (including a print head PID calculation module and a hot bed PID calculation module) and a temperature acquisition module, which are connected in sequence. The print head PID calculation module and the hot bed PID calculation module are also connected respectively. Print head heating module and hot bed heating module. If the temperature collected by the temperature collection module does not exceed the preset range, the temperature data of the print head and the hot bed are sent to the PID operation module. After the calculation of the PID operation module is completed, it will ...

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Abstract

The invention discloses a 3D printer temperature control system. The 3D printer temperature control system comprises a bus interface module, a register file, a PID operation module and a temperature acquisition module which are sequentially connected, wherein the PID operation module is also connected with a heating module; the temperature acquisition module judges acquired temperature; if the acquired temperature is not out of range, temperature data is sent to the PID operation module; after calculation of the PID operation module is completed, an effective signal and PID control quantity are output to the heating module; the heating module adopts a PWM mode for heating; heating time is controlled by virtue of a PWM method according to the PID control quantity; the PID operation module is divided into four parts, namely scale operation, integration operation, differential operation and PID result operation; PID operation result is completed after six cycles. The 3D printer temperature control system disclosed by the invention has the advantages that PID operation result can be output once every six cycles by virtue of the PID operation module, and the heating module adopts a novel PWM hardware structure, so that real-time property, accuracy and stability of temperature control are effectively improved, CPU load is reduced, and function extension of the 3D printer can be facilitated.

Description

technical field [0001] The invention relates to the field of temperature control, in particular to a 3D printer temperature control system. Background technique [0002] PID control has the characteristics of simple structure, easy understanding, convenience and practicality, so it is still widely used in temperature control systems. PID control actually uses proportional control, integral control and differential control three control calculation methods. The PID control operation takes the difference between the target temperature and the real-time temperature as input, and obtains the control output through proportional, integral, and differential operations respectively. The output quantity is used as the input quantity of the control actuator to judge whether to heat or cool through the PWM method. The PWM (Pulse Width Modulation) control is a pulse width modulation technology, which can equivalently obtain the required waveform (including shape and amplitude) by modu...

Claims

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Application Information

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IPC IPC(8): G05D23/19
CPCG05D23/1913
Inventor 张俊马吉雨宋朝霞李丽娇
Owner CENT SOUTH UNIV
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