Centralized cockpit pressure regulating system

Abstract

The invention discloses a centralized cockpit pressure regulating system, and belongs to the technical field of cockpit pressure regulation. The centralized cockpit pressure regulating system is characterized in that a barometric pressure sensor acquires a parameter in real time and inputs the parameter into a cockpit pressure schedule module to generate a cockpit pressure schedule instruction value, a cockpit pressure change rate generation module receives the cockpit pressure schedule instruction value and combines with a parameter of a cockpit pressure change rate limiting module to generate a change rate instruction value, a cockpit pressure difference generation module receives the change rate instruction value and then calculates a theoretical value of a cockpit pressure instruction,the theoretical value of the cockpit pressure instruction and a real-time parameter of a cockpit airflow supply device are input into a cockpit pressure controller at the same time to calculate the cockpit pressure instruction, the cockpit pressure instruction is compared with the real-time parameter of a cockpit pressure sensor to obtain a corrected value of the cockpit pressure instruction, thecorrected value of the cockpit pressure instruction is inputted into an exhaust valve driver, an exhaust valve motor drives an exhaust valve, and finally the closed-loop control on the cockpit pressure is achieved. The centralized cockpit pressure regulating system improves the control accuracy of the cockpit pressure, and guarantees the comfort of a passenger and the safety of an airplane structure.

Description

technical field [0001] The invention belongs to the technical field of cabin pressure regulation, and in particular relates to a centralized cabin pressure regulation system. Background technique [0002] At present, the main technologies applied in the field of aircraft cockpit pressure control at home and abroad include pneumatic cockpit pressure control technology, electropneumatic cockpit pressure control technology and digital cockpit pressure control technology. [0003] Pneumatic cockpit pressure control technology was used in earlier aircrafts. Since the computer control technology at that time had not been greatly developed, pneumatic cockpit pressure control technology became the main method of cockpit pressure control. Pneumatic cockpit pressure control technology can realize the control of cockpit pressure, but the accuracy of pneumatic cockpit pressure control is poor due to the long connecting pipeline of pneumatic control, high installation requirements, and h...

AI Technical Summary

Problems solved by technology

However, during the control process, the interference of the change of the cabin air supply to the system control is ignored, resulting in poor system control quality, and the control accuracy needs to be further improved.

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