Study on Temperature and Pressure Control of Autoclave Based on FPGA

Abstract

In order to solve the problem that the control accuracy and control effect of autoclave molding technology key parameters such as temperature and pressure were not ideal, Field Programmable Gate Array (FPGA) was applied to the autoclave control system. The temperature and pressure control system adoptd modular design which was carried out from top to bottom with Verilog HDL. Hanging custom IP on Avalon bus of Nios II processor. The combination of software and hardware PID control was realized by DS18B20 temperature sensor and BMP085 pressure sensor. And use the modelsim, Visual Studio to finish the simulation and testing. The test results showed that when the temperature measurement range was 0°C~100°C, the error was ±0.5°C, the error of pressure was ±0.01 MPa.