The temperature control method of the diamond six-sided top press

Abstract

The invention relates to a temperature control method of a diamond cubic press. The temperature control method comprises the following steps: 1, establishing a three-axis three-dimensional coordinate system by using a center point of a cavity inside the diamond cubic press as an original point, setting s heat sources in the cavity inside the diamond cubic press, wherein each heat source has a coordinate P in the coordinate system, the temperature value of each heat source is T, and the T is decomposed onto an x axis, a y axis and a z axis to form three temperature components; setting three particle swarms, wherein the three particle swarms are respectively sets of the temperature components of the s heat sources in directions of the three axes; the temperature components in the particle swarms are called as particles, the three particle swarms internally comprise s particles; 2, respectively optimizing the three particle swarms by using a particle swarm optimizing algorithm; and 3, controlling the heating intensity of the s heat sources by adopting a PID algorithm according to data in the three optimized particle swarms, so as to achieve the purpose of controlling the temperature of the cavity inside the diamond cubic press. The temperature control method is short in control time, accurate in control and stable in effect.

Description

(1) Technical field: [0001] The invention relates to a temperature control method, in particular to a temperature control method of a diamond six-sided top press. (two), background technology: [0002] At present, when using a diamond six-sided press to prepare synthetic diamond, the preparation process mainly depends on the internal control parameters in a high-temperature and high-pressure environment. The main control unit of the six-sided press is mainly composed of a temperature measuring circuit, a pressure measuring circuit, a temperature control The circuit, hydraulic transmission mechanism and other parts are built to measure and control the high temperature and high pressure environment. After the equipment is started, the internal furnace temperature and pressure are measured in real time, and the temperature control circuit and hydraulic transmission mechanism are continuously adjusted by comparing with the preset parameter curve, so that the equipment can operat...

AI Technical Summary

Problems solved by technology

In the field of temperature curve control in the process of diamond preparation for aerospace vehicles, the heating system of the diamond six-sided press adopts multi-point heating and multi-point detection. At the same time, as the internal pressure changes, the temperature control also changes. Traditional The control algorithm only considers the detection, feedback and control of temperature, and does not consider the influence of pressure changes in another image domain.

In addition, when the general particle swarm optimization algorithm is close to the optimal point of the optimization domain, it will stagnate after many iterations, which reduces the ability and robustness of searching for a better solution.

This not only causes errors in temperature curve tracking, but also affects product quality

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