RU186209U1 - Device for testing brushless electric motors of unmanned aerial vehicles - Google Patents

Abstract

The proposed utility model is designed to determine the characteristics of electric motors when working with certain types of propellers in various modes of their operation when developing unmanned aerial vehicles. The technical result achieved by using the proposed device is to reliably determine the parameters of electric motors when working with tested types of screws, which in turn allows you to choose the optimal parameters of the motor-screw, reduce costs in the manufacture and testing of unmanned vehicles. The achievement of the technical result is due to the fact that the device for testing brushless electric motors of unmanned aerial vehicles contains a housing in which a computing module with software for reproducing the test program and storing the results, a control and recording module, and a sensor for the current consumed by the electric motor are also located screw speed sensor, traction sensor, voltage sensor for the speed controller. In this case, the computing module with software for reproducing the test program and storing the results is connected by a communication line to the control and registration module, and the information outputs of the screw speed sensor, traction sensor, voltage sensor of the power supply of the speed controller, the sensor consumed by the electric motor of the current are connected to the information inputs of the control module and registration characteristics. 2 s.p. f-ly.

Description

The proposed utility model relates to monitoring and testing devices for brushless electric motors, designed to determine their technical characteristics and to use in the development of unmanned aerial vehicles in order to determine the characteristics of electric motors when working with certain types of propellers in different modes of operation.

Unmanned aerial vehicles are widely used in various fields of science and technology due to the simplicity of design and relatively low cost. As a power plant for unmanned aerial vehicles, brushless motors are often used in conjunction with speed controllers. At the same time, the main technical characteristics of electric motors of this type are thrust, which determines the air-lifting capabilities of the engine, and the current consumption, which affects the autonomy of the unmanned aerial vehicle.

Typically, the numerical indicators of these characteristics are indicated in the accompanying documentation of the electric motors, however, in addition to the design features of the motors themselves, they also depend on the characteristics of the screws used in testing the electric motors, such as diameter, pitch of the blades and others. The indicated characteristics of the propellers by manufacturers, as a rule, are not indicated, which leads to the need for repeated testing of electric motors when developing unmanned aerial vehicles in conjunction with the types of propellers proposed for use.

As a prototype of the proposed device can be considered a utility model "Test bench for submersible electric motors" (RF Patent for utility model RU 21455 U1, G01M 10/00, from 01.20.2002), characterized, inter alia, in that as a control and measurement equipment it uses electronic sensors, as well as a computing module (computer) with a test and storage program, equipped with a printer for printing test results, and these sensors provide the removal and fixing of various indicators test electric motor, among which there is a consumed current.

The specified device, with all its positive properties, cannot be effectively used for testing brushless electric motors of unmanned aerial vehicles since it does not provide a determination of all the required characteristics of these electric motors, for example, such as traction and the number of revolutions of the screw.

The technical result achieved when using the proposed device is to reliably determine the following parameters of electric motors when working with tested types of screws: conditional operation of the engine (from 0% to 100%), thrust of the motor-screw bundle (kg), current consumed by the motor (A ), supply voltage (V), screw rotation speed (r / min), efficiency (g / W), power (W), which in turn allows you to select the optimal engine-screw parameters, reduce costs in the manufacture and testing of unmanned aerial vehicles atov.

The achievement of the technical result is due to the fact that the device for testing brushless electric motors of unmanned aerial vehicles, comprising a housing in which there is a computing module with software for reproducing the test program and storing the results, a control and recording module, as well as a current sensor contains a screw speed sensor, a thrust sensor, a voltage sensor for the power supply of the speed controller, wherein numeral module connected to the communication line to the control unit and reception, and data outputs of said sensors connected to the data inputs of the control unit and recording characteristics.

In one embodiment of the utility model, the draft sensor has a tensometric principle of operation, and the screw speed sensor has an optical principle of operation.

All components of the proposed device are placed in a single housing. The utility model is further illustrated by the drawings, where in FIG. shows a structural diagram of the device.

The figure shows:

1 - Computing module with software for reproducing the test program and storing the results;

2 - module control and registration of characteristics;

3 - screw speed sensor;

4 - traction sensor;

5 - sensor consumed by the electric motor current;

6 - speed controller;

7 - voltage sensor speed controller;

8 - electric motor with a screw.

The device proposed as a utility model operates as follows.

After turning on the power, using the software for reproducing the test program and storing the results running on the computing module 1, the required number of revolutions of the screw is set.

The information signal from the computing module 1 is supplied through the control module and recording characteristics 2 to the speed controller 6, which sets the number of revolutions of the screw of the electric motor 8 by setting the corresponding supply voltage. The screw of the electric motor 8, gaining speed, the number of which is controlled by the software of the computing module 1 using the rotational speed sensor of the screw 3, creates a lifting force and acts on the traction sensor 4. In this case, the sensor of the current consumed by the electric motor 5 captures the value of the current consumed by the electric motor at given speeds, and RPM voltage sensor 7 - current voltage value in the electric motor power circuit.

The readings of these sensors are transmitted through the control and registration module 2 to the computing module 1, where the software reproduces the test program and stores the results, based on the readings, calculates the parameters of efficiency and power, as well as the conditional mode of the engine.

Claims (3)

1. A testing device for brushless electric motors of unmanned aerial vehicles, comprising a computing module with software for reproducing the test program and storing the results, a control and recording module, and a sensor for the current consumed by the electric motor, characterized in that the device is enclosed in a housing, and further comprises screw speed sensor, traction sensor, voltage sensor for power supply of the speed controller, while a computing module with software both with a sinter for reproducing the test program and storing the results, it is connected by a communication line to the control and registration module, and the information outputs of the screw speed sensor, traction sensor, voltage sensor of the power supply of the speed controller, and the sensor consumed by the current motor are connected to the information inputs of the control and registration module. 2. A testing device for brushless electric motors of unmanned aerial vehicles according to claim 1, characterized in that the thrust sensor has a tensometric principle of operation. 3. A testing device for brushless electric motors of unmanned aerial vehicles according to claim 1, characterized in that the rotational speed sensor has an optical principle of operation.

Images