An eVTOL power system motor performance test platform
By designing an eVTOL power system motor performance testing platform, the problem that existing platforms cannot simulate real flight conditions was solved, enabling accurate measurement of motor performance parameters and improving the accuracy and reliability of testing.
Patent Information
- Application Number
- CN202521785573.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-20
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-20
AI Technical Summary
Existing motor testing platforms cannot effectively simulate the performance parameters of eVTOL power systems under real flight conditions such as vertical takeoff and landing and horizontal flight.
An eVTOL power system motor performance testing platform was designed, which includes a support frame, a mounting platform, an electric angle adjuster, a tension sensor, a photoelectric speed sensor, and a voltage and current sensor. It can simulate the motor performance under different flight attitudes. The photoelectric speed sensor obtains the propeller speed in real time, the voltage and current sensor measures the electrical parameters, and the tension sensor detects the output tension.
It enables the simulation of the motor's actual operating conditions under different flight attitudes, and can accurately measure the motor's performance parameters, thus improving the accuracy and reliability of the test.
Smart Images
Figure CN224676420U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of motor performance testing platforms, and in particular to an eVTOL power system motor performance testing platform. Background Technology
[0002] With the development of new energy aviation technologies, eVTOL (electric vertical takeoff and landing aircraft) has become a research hotspot in the aviation field due to its advantages such as low noise and zero emissions. The motor, as the core component of the eVTOL power system, directly affects the aircraft's range, safety, and reliability.
[0003] However, existing motor testing platforms mainly use dynamometers or magnetic powder brakes as loads, lacking the ability to simulate real flight conditions, making it difficult to test the performance parameters of the power system in specific scenarios such as vertical take-off and landing and horizontal flight. Utility Model Content
[0004] The purpose of this invention is to solve the technical problem that existing motor testing platforms lack simulation of real flight conditions. To this end, an eVTOL power system motor performance testing platform is provided, which can simulate real flight conditions.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] An eVTOL power system motor performance testing platform includes a support frame, a mounting platform fixedly connected to the support frame, an electric angle adjuster mounted at one end of the mounting platform, a motor under test fixedly mounted at the rotating end of the electric angle adjuster, a propeller connected to the output shaft of the motor under test, a photoelectric speed sensor installed inside the protective cover of the propeller, an elastic body of a tension sensor connected to the hub of the propeller, and the housing of the tension sensor fixedly mounted on the mounting platform.
[0007] The following is a further defined technical solution of this utility model: the bottom of the support frame is fixedly connected to a base, the base is a rectangular plate structure, and the support frame is a three-dimensional structure composed of multiple vertical and horizontal steel beams welded together.
[0008] The following is a further defined technical solution of this utility model: the fixed end of the electric angle adjuster is mounted on the mounting platform by fastening bolts, and the rotating end of the electric angle adjuster is fixedly connected to the rear housing of the motor under test by fastening bolts.
[0009] The following is a further defined technical solution of this utility model: the elastic body of the tension sensor is connected to the hub of the propeller via a pull rod.
[0010] The following is a further defined technical solution of this utility model: the transceiver end of the photoelectric speed sensor is aligned with the propeller shaft of the propeller or a reflective mark fixed on the propeller shaft, and the propeller speed is obtained in real time by detecting the light pulse frequency when the propeller blade or the mark passes by.
[0011] The following is a further defined technical solution of this utility model: the electrical input terminal of the motor under test is connected to a voltage and current sensor, wherein the voltage and current sensor includes a voltage sensor and a current sensor.
[0012] The voltage sensor is a resistive voltage divider type, which is connected in parallel to the input power line of the motor under test. It obtains a low voltage signal proportional to the input voltage through resistive voltage division.
[0013] The current sensor is a Hall effect current sensor, which is connected in series with the drive power line of the motor under test. The current value is measured by sensing the magnetic field strength around the conductor.
[0014] Compared with the prior art, the present invention has the following technical effects:
[0015] In addition to meeting the conventional static performance test requirements of electric drive systems, this invention can achieve arbitrary angle adjustment to simulate the real working attitude of eVTOL during vertical take-off and landing, horizontal flight, and transition phases, thus solving the problem that existing test platforms cannot simulate flight attitude.
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of this utility model.
[0019] Reference numerals in the attached drawings: 1. Support frame; 2. Mounting platform; 3. Voltage and current sensor; 4. Tension sensor; 5. Electrical angle adjuster; 6. Motor under test; 7. Protective cover; 8. Propeller; 9. Base. Detailed Implementation
[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0022] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.
[0023] like Figure 1 As shown, an eVTOL power system motor performance testing platform is provided, which mainly consists of a testing platform support, a load system, and a measurement and detection section.
[0024] The test platform support consists of a base 9 at the bottom, a support frame 1 in the middle, and a mounting platform 2 at the top. The base 9 is a rectangular plate structure, which can be stably fixed by pre-embedded bolts or counterweights to prevent displacement during testing. The support frame 1 is fixedly installed on the base 9. The support frame 1 is a three-dimensional support structure composed of multiple vertical and horizontal steel beams welded together, with triangular reinforcing ribs welded at key nodes to ensure high rigidity and stability. The mounting platform 2 is fixedly installed on the support frame 1. The surface of the mounting platform 2 has multiple sets of standard mounting holes and slots for fixing the measurement and testing components.
[0025] The load system includes a propeller 8 with a drive shaft and an electric angle adjuster 5. The electric angle adjuster 5 is a high-precision, high-rigidity electrically or servo-driven rotary table. Its mechanical connection is as follows: the fixed end of the electric angle adjuster 5 is rigidly mounted on one end of the mounting platform 2 (usually located at the rear end or lateral support position of the motor under test 6) by fastening bolts. The output flange (or rotary table, or rotating end) of the electric angle adjuster 5 is rigidly connected to the rear end housing (non-rotating part) of the motor under test 6 by fastening bolts. In this way, by controlling the rotation of the rotating end of the electric angle adjuster 5, the spatial pitch angle (usually in the range of 0° to 90°) of the motor under test 6 (along with the propeller 8 mounted at its front end) can be accurately and stably changed, thereby simulating the attitude of the power system under various working conditions during vertical take-off and landing (pull direction vertically downward), horizontal flight (pull direction horizontally forward), and transition phases. The output shaft of the motor under test 6 is connected to the drive shaft of the propeller 8 through a coupling or spline, and the propeller 8 is driven to rotate by its own controller.
[0026] The measurement and detection section includes a tension sensor 4, a photoelectric speed sensor, and a current and voltage sensor, which are used to detect the input power and output performance of the motor in the power system.
[0027] Tension Measurement: The tension sensor 4 adopts a strain gauge structure. Its mechanical connection is as follows: the housing of the tension sensor 4 is fixed to a stable reference point on the mounting platform 2 (usually near the propeller 8) by a mounting bracket. The elastic body at the other end of the tension sensor 4 is connected to the hub of the propeller 8 by a connecting rod or rigid tie rod. In this way, when the motor 6 under test drives the propeller 8 to rotate and generate tension, the tension will be directly transmitted to the tension sensor 4, which will detect and output the axial tension signal generated by the power system in real time.
[0028] Speed measurement: The photoelectric speed sensor is installed inside the protective cover 7 at the center position of the propeller 8. Its transmitting / receiving window is aligned with the shaft of the propeller 8 or the reflective mark fixed on the shaft. By detecting the light pulse frequency when the propeller blades or the mark pass by, the speed of the propeller 8 (RPM) is obtained in real time, which indirectly reflects the output speed of the motor.
[0029] Electrical Parameter Measurement: Voltage and current sensors 3 are used to measure the input electrical parameters of the motor under test 6. Voltage and current sensors 3 include a voltage sensor and a current sensor. The voltage sensor is a resistive voltage divider type, connected in parallel to the input power lines of the motor under test 6 (between phases or between a phase and ground, depending on the measurement requirements). A low-voltage signal proportional to the input voltage is obtained through a precision resistive voltage divider network. The current sensor is a Hall effect current sensor (such as a closed-loop Hall effect sensor), connected in series to the drive power lines of the motor under test 6 (such as any one or more phases of a three-phase system). The current value is measured by inducing the magnetic field strength around the conductor.
[0030] Data acquisition circuit: The output terminals of the tension sensor 4 (usually outputs analog voltage or current signals), photoelectric speed sensor (usually outputs pulse frequency signals or analog voltage signals after F / V conversion), Hall current sensor (outputs analog voltage signals proportional to the measured current), and resistive voltage divider voltage sensor (outputs analog voltage signals proportional to the measured voltage) are all connected to a multi-channel data acquisition card (DAQ) through shielded signal lines.
[0031] Signal conditioning: DAQ cards typically integrate signal conditioning circuitry (such as amplification, filtering, and isolation) to preprocess the input analog and frequency signals to improve the signal-to-noise ratio and measurement accuracy.
[0032] Analog-to-digital conversion and transmission: The DAQ card performs analog-to-digital conversion (ADC) on the conditioned analog signal and transmits the converted digital signal (including frequency counting results) to the host industrial computer (or dedicated data acquisition unit / PLC) via a high-speed bus (such as USB, PCIe, Ethernet).
[0033] Data processing and display: The host computer receives angle feedback signals from the electric angle adjuster controller 5, records and displays the current test posture angle in real time. It provides a human-machine interface for setting test parameters (such as target angle sequence, speed commands), starting / stopping the test, real-time display of waveform curves (changes in tension, speed, voltage, current, power, efficiency, etc. over time or angle), storing test data, and generating test reports.
[0034] It should be noted that the computer programs or algorithms involved in the above control process are not within the protection scope of this utility model, and are only used by those skilled in the art to understand the processing of sensor-collected data.
[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the disclosed methods and techniques, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Therefore, all equivalent changes made based on the shape, structure, and principle of this utility model without departing from its technical solution should be covered within the protection scope of this utility model.
Claims
1. A performance testing platform for an eVTOL power system motor, characterized in that, The device includes a support frame, on which an installation platform is fixedly connected. An electric angle adjuster is installed at one end of the installation platform. A motor under test is fixedly installed at the rotating end of the electric angle adjuster. The output shaft of the motor under test is connected to a propeller. A photoelectric speed sensor is installed inside the protective cover of the propeller. An elastic body of a tension sensor is connected to the hub of the propeller. The housing of the tension sensor is fixedly installed on the installation platform.
2. The eVTOL power system motor performance testing platform as described in claim 1, characterized in that, The bottom of the support frame is fixedly connected to a base, which is a rectangular plate structure. The support frame is a three-dimensional structure composed of multiple vertical and horizontal steel beams welded together.
3. The eVTOL power system motor performance testing platform as described in claim 1, characterized in that, The fixed end of the electric angle adjuster is mounted on the mounting platform by fastening bolts, and the rotating end of the electric angle adjuster is fixedly connected to the rear housing of the motor under test by fastening bolts.
4. The eVTOL power system motor performance testing platform as described in claim 1, characterized in that, The elastic body of the tension sensor is connected to the hub of the propeller via a tie rod.
5. The eVTOL power system motor performance testing platform as described in claim 1, characterized in that, The transceiver of the photoelectric speed sensor is aligned with the propeller shaft or a reflective mark fixed on the propeller shaft. By detecting the frequency of the light pulses when the propeller blades or the mark pass by, the propeller speed can be obtained in real time.
6. The eVTOL power system motor performance testing platform as described in claim 1, characterized in that, The electrical input terminal of the motor under test is connected to a voltage and current sensor, wherein the voltage and current sensor includes a voltage sensor and a current sensor. The voltage sensor is a resistive voltage divider type, which is connected in parallel to the input power line of the motor under test. It obtains a low voltage signal proportional to the input voltage through resistive voltage division. The current sensor is a Hall effect current sensor, which is connected in series with the drive power line of the motor under test. The current value is measured by sensing the magnetic field strength around the conductor.