Abstract
This paper with the temperature control of electric heating furnace for the
control object, by virtue of the object characteristic of analysis for
temperature control of electric heating furnace then to certain the hardware
system of design and control solutions for the heating furnace.In all walks
of control realms,for example: The metallurgy,chemical engineering,machine
and other industry control field, electric heating furnace got an extensive
application, its temperature control has characteristics of non-linear,big
lag,big inertial,time-variable and warm up unilateralism etc. Use
bidirectional SCR that Traditional way to control temperature of heating
furnace is a phase shift style thich make no doubt of could control temperature
automatically but be proved to that could produce the fearfulness intermediate
frequency interfere result in a common disaster to power system during
transportatiion.On the contrary control, by using micro-chip computer assort
with the slide state raley (SSR) to control temperature is a steady , reliable
and advanced way for the intact sine wave which couldn't disturb the power
system. In order to reduce and be sure of high precision ,we use ATMEL AT89C52
micro-chip computer ,which be prove a wonderful ability of anti-jaming,to
control the power of radiation resistance which could infect temperature
directly by order the proportion of ON/OFF of SSR,The measurement part we
select the thermocouple (platinum rhodium 10- platinum) to detect the variable
temperature.and to achive automatic control.This control system possess
strongpoint of low cost, high control accuracy , good reliability and good
resistance to interferenceetc,so it have some worthwhile to put on
application.
Keywords
electric heating furnace； AT89C52；PID close-loop control thermocouple
(platinum rhodium 10- platinum)；SSR
VIP享7折，此内容立减4.47元 
