Gas flow control method
A control method and gas flow technology, applied in the flow control of electric devices, etc., can solve the problems of insufficient accuracy and timeliness, and achieve the effects of improving flight safety, broad application prospects, and improving fire extinguishing performance
Active Publication Date: 2011-12-21
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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Problems solved by technology
[0005] The existing technology adopts classical PID control for airflow control, and compares the processing results obtained with the target value after the proportion, integration and differentiation of the PID processing module. However, due to the complexity of the system and the physical characteristics of the gas itself, The classic PID control is slightly insufficient in terms of accuracy and timeliness
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[0021] The present invention will be further described below by means of specific embodiments:
[0022] In a principle test of an APU cabin fire extinguishing system of a certain type of aircraft, the invention is applied to control the gas flow. see figure 1 , which is a flowchart of the gas flow control method of the present invention. Its air flow simulation system is composed of measurement and control system and air circuit device. Wherein, the measurement and control system mainly includes computers (host, display, mouse, keyboard, printer), measurement and control channels (A / D channel, D / A channel, D / IO channel, signal conditioner, relay driver), servo actuators and The sensor is composed of a signal processing function module arranged in the host computer. The gas circuit device is mainly composed of electric valves, frequency conversion motors, blowers and air ducts. Among them, the A / D channel, D / A channel, and D / IO channel are all connected to the computer. Af...
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The invention relates to a method for controlling gas flow by using a computer. The method comprises the following steps of: setting target flow in the computer, and inputting the target flow, feedback flow of a controlled object and output feedback of a PID controller to a DRNN (diagonal recurrent neural network) together; inputting the target flow to the PID controller after algorithm processing of the DRNN, and taking the target flow and the output feedback of the PID controller together as the input of the PID controller; after processing of the PID controller and D / A conversion, amplifying the input and dividing the input into two paths of signals, and inputting one path of signal to an electric valve to control the opening of an air flue; inputting the other path of signals to a variable frequency motor to drive a blower to generate certain air quantity to enter an APU cabin through the air flue; and detecting the air quantity by using the sensor, and taking the detection resultas the feedback input of next cycle. The gas flow control method realizes high-speed accurate control of gas flow by combining the DRNN control algorithm and the PID control principle, and has wide application prospect.
Description
technical field [0001] The invention belongs to the field of computer control and relates to a method for controlling gas flow by using a computer. Background technique [0002] The fire extinguishing system in the aircraft is composed of fire extinguishing bottles, sensors, pipes and nozzles. It is an important system to ensure that the aircraft can still fly safely in the event of a sudden fire hazard during flight. [0003] In the design process of a certain type of aircraft, in order to ensure the rationalization and optimization of the design of the fire extinguishing system, it is necessary to carry out the principle test of the fire extinguishing system. [0004] The airflow simulation system is the key equipment for the principle test of the aircraft fire extinguishing system. Its main function is to provide a continuous and stable airflow for the APU cabin during the test. [0005] The existing technology adopts classical PID control for airflow control, and compa...
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IPC IPC(8): G05D7/06
Inventor 代井波荣立烨
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA