A teaching experiment platform for characteristics and control of variable-pitch aerodynamic system

Abstract

The invention relates to a characteristic and control experiment platform of a variable-pitch aviation power system, which is composed of a pole 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 pole position input module is used to input control signals, and the data acquisition module processes the potential signals output by several built-in sensors to the AVR microcontroller; the data processing and control module processes the electrical signals collected by the sensors and outputs various measurement parameters. The controller will also output two control signals to respectively control the steering gear and ESC of the variable pitch propeller electric power unit to realize throttle adjustment and pitch adjustment; LCD displays measurement parameters and pole position values. Compared with the traditional large-scale variable-pitch propeller experimental device, this platform is more portable and flexible, and it is easy for teachers to demonstrate and students to operate. In addition, this platform also has the scientific research value of identifying the nonlinear and linear models of the variable-pitch propeller electric power 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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