Variable-pitch aviation power system characteristic and control teaching experiment platform

Abstract

The invention relates to a variable-pitch aviation power system characteristic and control experiment platform. The variable-pitch aviation power system characteristic and control experiment platformis composed of a rod position input module, a data acquisition module, a data processing and control module, a variable-pitch power device module and an LCD display module. The rod position input module is used for inputting a control signal, and the data acquisition module is used for outputting potential signals to an AVR single-chip microcomputer for processing through several built-in sensors.The data processing and control module processes electric signals collected by the sensors and outputs measurement parameters, in addition, the controller outputs two paths of control signals to control a steering engine and an electronic speed controller of the variable-pitch propeller electrodynamic force device respectively, and accelerator adjustment and propeller pitch adjustment are achieved. The LCD is used for displaying the measurement parameters and the rod position value. Compared with a traditional large variable pitch propeller experiment device, the platform has the advantages of being lighter, more flexible, easy to demonstrate by teachers, easy to operate by students and the like, and in addition, the platform further has scientific research value of identifying nonlinearand linear models of the variable-pitch propeller electrodynamic force device.

Description

technical field [0001] The present invention relates to a variable-pitch aviation power system characteristics and control teaching experiment platform, which is a small electronic control system based on embedded development of variable-pitch propeller power devices, and is used for teaching demonstrations of related professional courses in the field of civil aviation. In addition, the present invention can also be used to identify the model parameters of the variable-pitch propeller electric power device. Background technique [0002] After the advent of metal propellers in 1923, fixed-pitch propellers were no longer able to meet the take-off and cruise requirements of aircraft. With the advancement of technology, in 1933, the power plant of the automatic variable pitch propeller was used on the Boeing 24 transport aircraft. Since the variable pitch propeller can make full use of the effective power of the engine, there will be no "heavier" or "lighter" propeller, which i...

AI Technical Summary

Problems solved by technology

However, one of the two physical systems built is to perform closed-loop control of the blade angle, and the other is to change the blade angle with the direction of the incoming flow to achieve the best angle of attack of the blade. Only the angle sensor and the speed sensor are used. Therefore, shaft power, tension, torque, and electric power cannot be measured on the above two devices; obviously, it is not like this platform that can measure various parameters, and can analyze its input and output characteristics and carry out models with a large amount of input and output data. parameter identification

Moreover, the above two systems have complex variable pitch structures and are not light enough, and they pay more attention to engineering applications; obviously they are not as light as this platform, which is convenient for teaching and demonstration

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