A momentum wheel run-in test system

Abstract

A momentum wheel running-in test system, including data acquisition module, power module, drive module and control module;Data acquisition module is used for collecting the state data of momentum wheel when running-in test, state data includes voltage data;Power module is used for providing original voltage;Drive module includes gear conversion submodule and linear power regulation submodule, gear conversion submodule is used for changing original voltage to generate drive voltage capable of driving momentum wheel, linear power regulation submodule is used for compensating drive voltage;Linear power regulation submodule includes operational amplifier U1A, reference source U18 and darlington power tube Q3, operational amplifier U1A is used for comparing reference voltage of reference source U18 and voltage data to generate error signal, and darlington power tube Q3 is used for linear compensation of drive voltage according to error signal;Control module is connected with power module, drive module and data acquisition module.The utility model improves the accuracy of momentum wheel running-in test result.

Description

Technical Field

[0001] This utility model relates to the field of momentum wheel running-in testing technology, specifically a momentum wheel running-in testing system. Background Technology

[0002] The momentum wheel is a core actuator in a satellite attitude control system. It primarily relies on its gyroscopic stability and the reaction force generated by velocity changes to stabilize or alter the satellite's attitude, thus finding widespread application in the aerospace field. A failure in the momentum wheel will lead to satellite attitude misalignment. To ensure reliable satellite operation throughout its expected on-orbit lifespan, ground-based running-in tests are necessary to eliminate defective momentum wheels.

[0003] Ground running-in testing is a crucial long-life lubrication assessment and assurance measure for momentum wheel bearing systems before installation. On one hand, it allows the momentum wheel to quickly reach its optimal lubrication state through break-in; on the other hand, by testing the current or power consumption of the momentum wheel, the lubrication and operating conditions of the shaft system can be quantitatively reflected, thus eliminating defective products early in the manufacturing process. However, in existing technologies, momentum wheel running-in testing often uses adjusting the duty cycle of the pulse width modulation signal to control the motor speed, achieving coarse adjustment. This adjustment method results in poor current and speed stability of the motor, affecting the accuracy of the momentum wheel running-in test results. Utility Model Content

[0004] To address the problem that existing technologies, which control motor speed by adjusting the duty cycle of pulse width modulation signals, affect the accuracy of momentum wheel running-in test results, this invention provides a momentum wheel running-in test system that improves the stability of the current and speed of the momentum wheel motor, thereby enhancing the accuracy of the momentum wheel running-in test results.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a momentum wheel running-in test system, including a data acquisition module, a power supply module, a drive module and a control module;

[0006] The data acquisition module is used to collect the status data of the momentum wheel during the break-in test. The status data includes voltage data.

[0007] The power module is used to provide the raw voltage;

[0008] The drive module includes a gear shifting submodule and a linear power regulation submodule. The gear shifting submodule is used to change the original voltage to generate a drive voltage that can drive the momentum wheel, and the linear power regulation submodule is used to compensate for the drive voltage.

[0009] The linear power regulation submodule includes an operational amplifier U1A, a reference source U18, and a Darlington power transistor Q3. The operational amplifier U1A is used to compare the reference voltage of the reference source U18 with the voltage data to generate an error signal. The Darlington power transistor Q3 is used to linearly compensate the drive voltage according to the error signal.

[0010] The control module is connected to the power supply module, drive module, and data acquisition module.

[0011] As a further optimization of the momentum wheel running-in test system of the utility model: the gear shifting submodule includes a rheostat unit, a relay unit and a resistor network unit. The rheostat unit is used to set the driving voltage. The rheostat unit includes multiple rheostat subunits with different resistance ranges. The resistor network unit is connected to the data acquisition module.

[0012] As a further optimization of the momentum wheel running-in test system of the utility model: the relay unit is used to switch the rheostat subunit.

[0013] As a further optimization of the momentum wheel running-in test system of the utility model: the rheostat subunit includes rheostat W1 and rheostat W2, the relay unit includes relay U12, relay U13 and relay U15, and the resistor network unit includes resistors R7-1, R7-2, R7-3, R7-4, R7-5 and R7-6 connected in series.

[0014] As a further optimization of the momentum wheel running-in test system of the utility model: the test system includes a drive protection module connected to the control module, the drive protection module is used to drive the Darlington power transistor Q3 and provide overcurrent protection for the test system.

[0015] As a further optimization of the momentum wheel running-in test system of the utility model: the drive protection module includes resistor R3, resistor R4, transistor Q1 and transistor Q2, and transistor Q1 is connected to the linear power regulation submodule.

[0016] As a further optimization of the momentum wheel running-in test system of the utility model: the data acquisition module includes a voltage sensor, a current sensor, a Hall sensor, a vibration sensor, a temperature sensor and a data acquisition card. The voltage sensor is used to acquire the voltage data, the current sensor is used to acquire the current data, the Hall sensor is used to acquire the rotational speed data, the vibration sensor is used to acquire the vibration data, the temperature sensor is used to acquire the temperature data, and the data acquisition card is used to integrate the voltage data, current data, rotational speed data, vibration data and temperature data into the status data and transmit it to the control module.

[0017] As a further optimization of the momentum wheel running-in test system of the utility model: the test system includes a data management module and an early warning module connected to the control module. The data management module is used to store the preset data of the momentum wheel and the status data.

[0018] The preset data includes a warning threshold, and the control module can control the warning module to issue a warning message when the status data exceeds the warning threshold.

[0019] As a further optimization of the momentum wheel running-in test system of the utility model: the preset data includes model parameters, electrical parameters and running-in parameters, and the control module controls the gear shifting submodule to change the driving voltage based on the model parameters, electrical parameters and running-in parameters.

[0020] As a further optimization of the momentum wheel running-in test system of the utility model: the test system includes a communication interface module connected to the control module, and the control module obtains commands from the host computer through the communication interface module.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] The drive module of this invention includes a gear shifting submodule and a linear power adjustment submodule. The gear shifting submodule is used to change the original voltage to generate a drive voltage capable of driving the momentum wheel, and the linear power adjustment submodule is used to compensate for the drive voltage. The linear power adjustment submodule includes an operational amplifier U1A, a reference source U18, and a Darlington power transistor Q3. The operational amplifier U1A is used to compare the reference voltage of the reference source U18 with the voltage data to generate an error signal, and the Darlington power transistor Q3 is used to linearly compensate the drive voltage according to the error signal. This invention changes the motor phase voltage of the momentum wheel by directly adjusting the drive voltage used to drive the momentum wheel, thereby changing the motor speed of the momentum wheel. Compared with the method of controlling the motor speed by adjusting the duty cycle of the pulse width modulation signal, this invention has higher current and speed stability, thus improving the accuracy of the momentum wheel running-in test results. Attached Figure Description

[0023] Figure 1 This is a module diagram of this utility model;

[0024] Figure 2 This is the circuit diagram of the gear shifting submodule, the linear power regulation submodule, and the drive protection module of this utility model. Detailed Implementation

[0025] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. Parts not described or disclosed in detail in the following embodiments of this utility model should be understood as prior art known or should be known by those skilled in the art, such as the model of voltage sensor, current sensor, Hall sensor, vibration sensor, temperature sensor and data acquisition card, and how the control module is connected to the power module, drive module and data acquisition module.

[0026] A momentum wheel run-in test system, such as Figure 1 and Figure 2 As shown, it includes a data acquisition module, a power supply module, a drive module, and a control module. The control module is connected to the power supply module, the drive module, and the data acquisition module.

[0027] The data acquisition module is used to collect the status data of the momentum wheel during the break-in test, including voltage data. The module includes a voltage sensor, a current sensor, a Hall sensor, a vibration sensor, a temperature sensor, and a data acquisition card. The voltage sensor acquires voltage data, i.e., the operating voltage of the momentum wheel; the current sensor acquires current data, i.e., the operating current of the momentum wheel; the Hall sensor acquires rotational speed data, i.e., the operating speed of the momentum wheel; the vibration sensor acquires vibration data, i.e., the vibration of the momentum wheel during break-in; and the temperature sensor acquires temperature data, i.e., the operating temperature of the momentum wheel. The data acquisition card integrates the voltage, current, rotational speed, vibration, and temperature data into status data and transmits it to the control module.

[0028] The power module is used to provide the raw voltage.

[0029] The drive module includes a gear shifting submodule and a linear power regulation submodule. The gear shifting submodule is used to change the original voltage to generate a drive voltage that can drive the momentum wheel, and the linear power regulation submodule is used to compensate for the drive voltage.

[0030] The linear power regulation submodule includes operational amplifier U1A, reference source U18, and Darlington power transistor Q3. Operational amplifier U1A is used to compare the reference voltage of reference source U18 with the voltage data to generate an error signal. Darlington power transistor Q3 is used to linearly compensate the drive voltage based on the error signal. The operational amplifier U1A is model LM358H, the reference source U18 is model LM399, and the Darlington power transistor Q3 is model C2073.

[0031] The gear shifting submodule includes a rheostat unit, a relay unit, and a resistor network unit. The rheostat unit is used to set the drive voltage and includes multiple rheostat subunits with different resistance ranges. The resistor network unit is connected to the data acquisition module. The relay unit is used to switch the rheostat subunits. The rheostat subunits include rheostats W1 and W2. The relay unit includes relays U12, U13, and U15. The resistor network unit includes resistors R7-1, R7-2, R7-3, R7-4, R7-5, and R7-6 connected in series.

[0032] The test system includes a drive protection module connected to the control module. This module drives the Darlington power transistor Q3 and provides overcurrent protection for the test system. The drive protection module includes resistors R3 and R4, transistors Q1 and Q2, with transistor Q1 connected to the linear power regulation submodule. Transistor Q1 is a TIP122, and transistor Q2 is a 2N2222.

[0033] This invention changes the motor phase voltage of the momentum wheel by directly adjusting the driving voltage used to drive the momentum wheel, thereby altering the motor speed of the momentum wheel. Compared to controlling the motor speed by adjusting the duty cycle of the pulse width modulation signal, this invention offers higher current and speed stability, thus improving the accuracy of momentum wheel break-in test results.

[0034] The testing system includes a data management module and an early warning module connected to the control module. The data management module stores preset data and status data of the momentum wheel. The preset data includes early warning thresholds. When the status data exceeds the early warning thresholds, the control module can control the early warning module to issue an early warning message, which is displayed via audible and visual alarms. All early warning messages and status data are recorded in the data management module to ensure data integrity and traceability. The preset data includes model parameters, electrical parameters, and running-in parameters. Based on these parameters, the control module controls the gear shifting submodule to change the drive voltage. The control module can analyze the momentum wheel's power consumption, lubrication status, vibration characteristics, and other key performance indicators based on the collected status data. Based on the analysis results, the control module generates a report containing the status data and analysis results, which is stored in the data management module for subsequent quality control and product improvement reference.

[0035] The testing system includes a communication interface module connected to the control module. The control module obtains commands from the host computer through the communication interface module, thus realizing data transmission and command reception.

[0036] This invention integrates multiple modules, including a control module, a drive module, and a data acquisition module, to construct an automated testing system. It achieves full-process control and automated management of the momentum wheel break-in testing process. The control module precisely regulates the running-in operation status by issuing command sets; simultaneously, the data acquisition module monitors the momentum wheel's running status data in real time. This invention improves testing efficiency and reduces the risk of human intervention, making test results more reliable.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A momentum wheel running-in test system, characterized in that: It includes a data acquisition module, a power supply module, a drive module, and a control module; The data acquisition module is used to collect the status data of the momentum wheel during the break-in test. The status data includes voltage data. The power module is used to provide the raw voltage; The drive module includes a gear shifting submodule and a linear power regulation submodule. The gear shifting submodule is used to change the original voltage to generate a drive voltage that can drive the momentum wheel, and the linear power regulation submodule is used to compensate for the drive voltage. The linear power regulation submodule includes an operational amplifier U1A, a reference source U18, and a Darlington power transistor Q3. The operational amplifier U1A is used to compare the reference voltage of the reference source U18 with the voltage data to generate an error signal. The Darlington power transistor Q3 is used to linearly compensate the drive voltage according to the error signal. The control module is connected to the power supply module, drive module, and data acquisition module.

2. The momentum wheel running-in test system as described in claim 1, characterized in that: The gear shifting submodule includes a rheostat unit, a relay unit, and a resistor network unit. The rheostat unit is used to set the driving voltage and includes multiple rheostat subunits with different resistance ranges. The resistor network unit is connected to the data acquisition module.

3. The momentum wheel running-in test system as described in claim 2, characterized in that: The relay unit is used to switch the rheostat subunit.

4. The momentum wheel running-in test system as described in claim 2, characterized in that: The rheostat subunit includes rheostats W1 and W2, the relay unit includes relays U12, U13 and U15, and the resistor network unit includes resistors R7-1, R7-2, R7-3, R7-4, R7-5 and R7-6 connected in series.

5. The momentum wheel running-in test system as described in claim 1, characterized in that: The test system includes a drive protection module connected to the control module. The drive protection module is used to drive the Darlington power transistor Q3 and provide overcurrent protection for the test system.

6. The momentum wheel running-in test system as described in claim 5, characterized in that: The drive protection module includes resistors R3 and R4, transistor Q1 and transistor Q2, with transistor Q1 connected to the linear power regulation submodule.

7. The momentum wheel running-in test system as described in claim 1, characterized in that: The data acquisition module includes a voltage sensor, a current sensor, a Hall sensor, a vibration sensor, a temperature sensor, and a data acquisition card. The voltage sensor is used to acquire voltage data, the current sensor is used to acquire current data, the Hall sensor is used to acquire rotational speed data, the vibration sensor is used to acquire vibration data, and the temperature sensor is used to acquire temperature data. The data acquisition card is used to integrate the voltage data, current data, rotational speed data, vibration data, and temperature data into the status data and transmit it to the control module.

8. The momentum wheel running-in test system as described in claim 7, characterized in that: The testing system includes a data management module and an early warning module connected to the control module. The data management module is used to store preset data of the momentum wheel and the status data. The preset data includes an early warning threshold. The control module can control the early warning module to issue an early warning message when the status data exceeds the early warning threshold.

9. The momentum wheel running-in test system as described in claim 8, characterized in that: The preset data includes model parameters, electrical parameters, and running-in parameters. The control module controls the gear shifting submodule to change the drive voltage based on the model parameters, electrical parameters, and running-in parameters.

10. The momentum wheel running-in test system as described in claim 1, characterized in that: The testing system includes a communication interface module connected to the control module, through which the control module obtains commands from the host computer.

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