Digital Controller For Swash Plate Of Aircraft Inlet

As an important component of control field, hydraulic serve position control system with big power, rapid reflection and high accuracy characteristics, is being used widely in many industrial fields. In the paper, it is done elementarily for hydraulic serve position system to make mathematical model and simulation in the surrounding of MATLAB/Simulink.The controller for swash plate of aircraft inlet is a typical hydraulic serve position control system. It can fulfill automatic control on swash plate of aircraft inlet through controlling motion direction of swash plate. Firstly, it gains theoretical position of swash plate by dealing with signals of motor revolution velocity and whole atmospheric temperature. Secondly, the result is compared with the signals of position sensor of swash plate. Thirdly, the last values magnified as control signals drive pressure moving tube. Make the swash plate move to decrease the valuces. In this way, the automatic control of the swash plate is realized.The key component of this system is controller of aircraft inlet. Its action is gathering sensor signals, then coping with them and gaining theoretical position of swash plate, at the same time, providing control signals. It is composed of computer circuit, I/O interfase circuit, serve amplifier circuit, demodulator circuit, constant current source, inverter circuit, power circuit and supervise circuit. In the paper, elaborate design on the hardware of controller of aircraft inlet is done.Design of software is completed by 8031 assembler language. The function of software is gathering revolution velocity of motor and whole atmospheric temperature in special period.. According to adjust regulation, the adjust voltage is abtained with the function of revision alert and self-test.Test has been done, and the result of it indicates that the controller of swash plate of aircraft inlet fufills the require of design.