Vacuum brazing furnace high precision temperature control system

Vacuum brazing furnace high precision temperature control system

Introduces the vacuum brazing furnace high precision temperature control system of the composition, working principle and using computer to realize automatic high precision temperature control algorithm. Practice shows that in different power vacuum heating equipment, using the control algorithm can achieve satisfactory control effect.
Along with the computer technology, the rapid development of modern control theory and industrial computer process control system has been widely used, in a lot of control engineering, have been obtained accurate control laws and methods, and can make the controlled object to get the desired response. At present, in the aspect of industrial kiln temperature automatic control, by using microcomputer to realize the direct digital control system to replace the analog PID control has been obviously, this not only improves the performance of the control system and control precision, but also enhance the control of the system. With the function. Vacuum brazing technology get more and more widely used in various industrial fields. Especially in the aerospace industry, some parts of brazing for heating speed and precision of temperature control are put forward higher requirements. In order to meet these parts brazing process, we developed to grind a sword the new brazing equipment, using microcomputer to realize high degree of automatic temperature control, can be in accordance with the requirements of different brazing technology automatically complete the whole process of soldering process. Differential signal processing such as PID control algorithm, so that the controlled volume stability in value. Temperature control system consists of two parts, the main circuit and control circuit, the principle of electrical control system structure is shown in figure 1. Figure 1 control system structure diagram, system composition and principle of using computer to realize automatic temperature control, must first put the furnace temperature of measured signal accurately in the form of digital t into the computer control system, and then compared with setting temperature to form both the deviation of the signal, the computer according to the partial main circuit including the ac power and magnetic voltage regulator, silicon controlled rectifier voltage regulator device.