Bipolar stepping motor electric actuator testing device

Abstract

The utility model relates to the technical field of motor control testing, in particular to a bipolar stepping motor electric actuator testing device, which is connected with a bipolar stepping motor electric actuator and an external power supply, the external power supply supplies power to the testing device, and the testing device controls the bipolar stepping motor electric actuator to operate and acquires operating parameters of the bipolar stepping motor electric actuator. And comparing the obtained operation parameters with preset parameters to judge whether the bipolar stepping motor electric actuator meets the design requirements or not. According to the technical scheme, the feedback signals of the digital angle sensor and the bipolar stepping motor electric actuator are compared with the preset parameters, whether the actuator meets the design requirement or not can be accurately judged, and the test accuracy is improved; the testing device can monitor and analyze a plurality of parameters such as operation angle, speed, current and the like of the bipolar stepping motor electric actuator, meets different testing requirements, and comprehensively evaluates the performance of the actuator.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor control test technical field, concretely relates to a bipolar stepping motor electric actuator testing arrangement. BACKGROUND

[0002] The existing bipolar stepping motor electric actuator testing arrangement has many deficiencies. In the test mode, it mainly relies on mechanical device test and indicates the running angle of the electric actuator, and can only judge whether the electric actuator can run and whether the feedback signal is in the normal range. In terms of function, it is not comprehensive, lacks digital angle measurement function, cannot compare with the feedback signal in real time, and has no abnormal alarm function; At the same time, it lacks voltage protection and overcurrent protection mechanism, has no display function, and it is difficult to accurately locate the problem point when the test fails, cannot accurately control the running speed and running step number of the actuator, and cannot realize automatic and efficient test. From the performance parameters, the mechanical angle indication accuracy is poor, lacks digital angle sensor, and cannot realize real-time angle comparison; It lacks voltage and current measurement, cannot realize accurate test, and has no protection function; It can only be tested at a specific speed, lacks speed regulation and step counting function; It has no display and sound prompt function, so it is difficult to determine the test parameters of each link during the test process, and it is difficult to determine the problem once the test fails. UTILITY MODEL CONTENT

[0003] The utility model aims at at least one of the technical problems in the related art. Therefore, the purpose of the utility model is to provide a heat energy recycling system and method and electronic equipment to solve the problems of incomplete function, inaccurate test, lack of protection function and inability to automatically and efficiently test existing test devices.

[0004] The purpose of the utility model can be realized by the following technical solutions:

[0005] A bipolar stepping motor electric actuator testing arrangement, the testing arrangement is connected with the bipolar stepping motor electric actuator and external power supply, the external power supply supplies power to the testing arrangement, the testing arrangement controls the bipolar stepping motor electric actuator to run and obtains its running parameters, and the obtained running parameters are compared with the preset parameters to determine whether the bipolar stepping motor electric actuator meets the design requirements.

[0006] The testing arrangement includes a power module, a control unit, an input and output unit and a double H-bridge stepping motor drive module, the control unit includes an MCU, a voltage detection module, a current detection module and a digital angle sensor, and the input and output unit includes a key input module, a display screen module and a buzzer module.

[0007] The driving source of the bipolar stepping motor electric actuator is a bipolar stepping motor, and a driving circuit of the bipolar stepping motor comprises resistors, a driving chip, a signal interface and eight MOSFETs.

[0008] In some embodiments of the utility model, the power module includes a 5V LDO module, and the power module is connected with an external power supply and an MCU respectively, and the power module is used for converting the power supply of the external power supply into 5V and transmitting the power supply to the MCU for power supply.

[0009] In some embodiments of the utility model, the voltage detection module is connected with the power module and the MCU respectively, and the voltage detection module detects the power supply voltage and transmits the voltage signal to the MCU for detection.

[0010] In some embodiments of the utility model, the key input module is connected with the MCU, and the key input module is used for controlling external signal input.

[0011] In some embodiments of the utility model, the buzzer module is connected with the MCU, and the buzzer module is used for outputting a prompt sound of a test result.

[0012] In some embodiments of the utility model, the double-H-bridge stepping motor driving module is connected with the MCU and the bipolar stepping motor electric actuator respectively, the MCU outputs a control signal to control the turn-on and turn-off of the double-H-bridge stepping motor driving module, and then the bipolar stepping motor in the bipolar stepping motor electric actuator is driven to operate through the double-H-bridge stepping motor driving module, and finally the bipolar stepping motor electric actuator is driven to operate.

[0013] In some embodiments of the utility model, the current detection module is connected with the MCU and the double-H-bridge stepping motor driving module respectively, and the current detection module is used for detecting a current signal used for driving the bipolar stepping motor in the double-H-bridge stepping motor driving module and transmitting the current signal to the MCU.

[0014] In some embodiments of the utility model, the display screen module is connected with the MCU, and the display screen module is used for displaying test parameters, test process data and test results.

[0015] In some embodiments of the utility model, the bipolar stepping motor electric actuator is connected with the MCU, and the bipolar stepping motor electric actuator is used for transmitting a feedback signal of the electric actuator body to the MCU.

[0016] In some embodiments of the utility model, digital angle sensor is connected with MCU and bipolar stepping motor electric actuator respectively, digital angle sensor obtains real-time running angle of bipolar stepping motor electric actuator and transmits to MCU, and is used for comparison, calculation and test result judgement.

[0017] The utility model discloses the beneficial effect:

[0018] Compared with the traditional method, the technical scheme can accurately judge whether the actuator meets the design requirement by comparing the feedback signal of the digital angle sensor and the bipolar stepping motor electric actuator with the preset parameter, improve the accuracy of the test, and the voltage detection module and the current detection module monitor the voltage and the current in real time, protect in time when the abnormality appears, prevent the equipment damage, prolong the service life of equipment, the test device can monitor and analyze the running angle, the speed, the current and multiple parameters of the bipolar stepping motor electric actuator, satisfy different test demand, and comprehensively evaluate the actuator performance. ACCURACY

[0019] The utility model makes further explanation in combination with the drawings.

[0020] Figure 1 It is the connection schematic drawing of test device, bipolar stepping motor electric actuator and external power supply in the utility model,

[0021] Figure 2 It is the control circuit connection schematic drawing of test device in the utility model,

[0022] Figure 3 It is the drive circuit schematic drawing of bipolar stepping motor in the utility model,

[0023] Figure 4 It is the circuit schematic drawing of current detection module in the utility model,

[0024] Figure 5 It is the circuit schematic drawing of key input module in the utility model,

[0025] Figure 6 It is the circuit schematic drawing of buzzer module in the utility model,

[0026] Figure 7 It is the circuit schematic drawing of display screen module in the utility model.

[0027] In the drawing: 1, external power supply, 2, power module, 3, voltage detection module, 4, key input module, 5, buzzer module, 6, MCU, 7, double H bridge stepping motor drive module, 8, current detection module, 9, display screen module, 10, bipolar stepping motor electric actuator, 11, digital angle sensor, 12, test device. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] As shown in Figure 1 , Figure 2 A bipolar stepper motor electric actuator testing device, the testing device 12 is connected with the bipolar stepper motor electric actuator 10 and the external power supply 1, the external power supply 1 supplies power for the testing device 12, the testing device 12 controls the bipolar stepper motor electric actuator 10 to run and obtains its running parameters, and the obtained running parameters are compared with preset parameters to determine whether the bipolar stepper motor electric actuator 10 meets the design requirements.

[0030] The testing device 12 comprises a power module 2, a control unit, an input and output unit and a double H-bridge stepper motor drive module 7, the control unit comprises an MCU 6, a voltage detection module 3, a current detection module 8 and a digital angle sensor 11, and the input and output unit comprises a key input module 4, a display screen module 9 and a buzzer module 5.

[0031] After the external power supply 1 supplies power for the testing device 12, the user inputs control instructions such as starting testing and setting testing parameters to the MCU 6 through the key input module 4; after the MCU 6 receives the instructions, the double H-bridge stepper motor drive module 7 is controlled to be turned on, and the bipolar stepper motor electric actuator 10 is driven to run, during the running process, the voltage detection module 3 monitors the power supply voltage, the current detection module 8 monitors the motor drive current, the digital angle sensor 11 obtains the actuator running angle, and the bipolar stepper motor electric actuator 10 itself also transmits feedback signals to the MCU 6; the MCU 6 continuously collects these data and compares and analyzes them with preset parameters, after the testing is completed, the MCU 6 controls the display screen module 9 to display the testing results, and controls the buzzer module 5 to emit corresponding prompt sounds, informing the user whether the testing is passed.

[0032] In some embodiments of the utility model, power module 2 integrates 5V LDO module, it has the ability of converting the power supply of external power supply 1 into stable 5V voltage. One end of power module 2 is connected with external power supply 1, and the other end is connected with MCU 6, and the converted 5V voltage is transmitted to MCU 6, and it is stably powered, and such design can ensure that MCU 6 works in stable voltage environment, avoids the influence of voltage fluctuation on the performance and stability of test device 12. Meanwhile, 5V LDO module has the characteristics of low voltage difference and high stability, can effectively reduce the energy loss in power conversion process, and improves power utilization efficiency.

[0033] In some embodiments of the utility model, voltage detection module 3 is connected with power module 2 and MCU 6 respectively. The working principle of voltage detection module 3 is to monitor the power supply voltage output by power module 2 in real time, and the voltage signal is collected through the internal voltage sampling circuit;Then, the collected voltage signal is transmitted to MCU 6;The normal voltage range is set in advance in the internal MCU 6, after receiving the voltage signal, it will compare it with the preset range. If the voltage exceeds the normal range, MCU 6 can take corresponding measures in time, such as controlling buzzer module 5 to issue an alarm, or controlling double H bridge stepping motor drive module 7 to stop working, to protect test device 12 and the tested bipolar stepping motor electric actuator 10, prevent equipment damage caused by overvoltage or undervoltage.

[0034] As an example, the circuit of voltage detection module 3 mainly consists of voltage stabilizing diode, resistance, capacitor, the main function of this circuit is to detect the input voltage of test device 12, has overvoltage and undervoltage protection function.

[0035] As Figure 5 As shown in some embodiments of the utility model, the key input module 4 is connected with MCU 6, and the key input module 4 is used for controlling external signal input and adjusting and testing the start and stop of control parameter.

[0036] As an example, the circuit of the key input module 4 mainly consists of keys and resistors, and the main function of the circuit is external signal input. Different keys are pressed, and the MCU 6 detects different voltage values to distinguish different key signals. Each key is used to adjust test parameters and control the start or end of the test. The key input module 4 is usually composed of multiple function keys, such as a start test key, a stop test key, a parameter setting key, etc. When the user presses different keys, the key input module 4 will generate corresponding electrical signal changes, which are recognized by the MCU 6. For example, when the start test key is pressed, the MCU 6 receives the signal and starts the entire test process, and controls the double-H bridge stepping motor driving module 7 to start working. When the parameter setting key is pressed, the user can adjust the preset parameters required for the test, such as motor running speed and running step number, etc., to provide a flexible control method for different test requirements

[0037] As shown in Figure 6 In some embodiments of the utility model, the buzzer module 5 is connected with the MCU 6 and is controlled by the MCU 6. During the test process, when the test is completed, the MCU 6 sends instructions to the buzzer module 5 according to the test results. If the test results show that the bipolar stepping motor electric actuator 10 meets the design requirements, the MCU 6 controls the buzzer module 5 to emit a short sound prompt. If the test fails, the MCU 6 controls the buzzer module 5 to emit continuous long sound or different frequency sound combinations to prompt the user that there is a problem with the test. This sound prompting method can enable the user to quickly know the test results even if he is away from the display screen module 9, thereby improving the convenience and efficiency of the test.

[0038] As an example, the circuit of the buzzer module 5 mainly consists of a voltage stabilizing diode, a triode, a resistor, and a buzzer. The main function of the circuit is that the MCU 6 controls the buzzer to emit different frequencies and rhythms of sound, which is used to prompt the test results.

[0039] In some embodiments of the utility model, the double-H bridge stepping motor driving module 7 is connected with the MCU 6 and the bipolar stepping motor electric actuator 10, respectively. The MCU 6 outputs control signals to control the turn-on and turn-off of the double-H bridge stepping motor driving module 7, and then drives the bipolar stepping motor in the bipolar stepping motor electric actuator 10 to run through the double-H bridge stepping motor driving module 7, and finally drives the bipolar stepping motor electric actuator 10 to run.

[0040] As an example, MCU 6 controls the turn-on and turn-off of double H-bridge stepper motor drive module 7 by outputting specific pulse control signals. When double H-bridge stepper motor drive module 7 is turned on, its internal circuit provides appropriate current and voltage for the bipolar stepper motor according to a certain logic, driving the bipolar stepper motor to operate. The operation of the bipolar stepper motor drives the operation of bipolar stepper motor electric actuator 10, realizing the driving test of the actuator. The design of this module makes the control of the motor operation more accurate, and can accurately control the speed, direction and number of steps of the motor according to the instructions of MCU 6, meeting the precise requirements of motor operation in different test scenarios.

[0041] As shown in Figure 3 The driving source of bipolar stepper motor electric actuator 10 is a single-stage stepper motor, and the bipolar stepper motor drive circuit mainly consists of resistors, a drive chip, a signal interface and eight MOSFETs. The eight MOSFETs are divided into two groups of double H-bridge structure, each H-bridge structure is used to drive two-phase windings of the bipolar stepper motor, and the drive chip is used to receive the control signals of MCU 6 to control the turn-on and turn-off of the MOSFETs. MCU 6 outputs control signals to the drive chip, which further controls the conduction state of each MOSFET. The two upper bridge arm MOSFETs of each H-bridge structure are connected to the positive electrode of power module 2, and the two lower bridge arm MOSFETs are grounded; the output ends of the double H-bridge structure are connected to the two-phase windings of the bipolar stepper motor, forming a bidirectional current path. In operation, MCU 6 generates pulse signals according to the preset control algorithm, and adjusts the conduction timing of each MOSFET through the drive chip; by controlling the combined conduction of different MOSFETs, the current flows bidirectionally in the two-phase windings of the bipolar stepper motor, realizing the forward rotation, reverse rotation, braking and precise stepping control of the motor; the double H-bridge structure supports full-step, half-step and micro-step driving modes, and can accurately adjust the speed and torque of the motor.

[0042] The bipolar stepper motor drive circuit combined with the control algorithm of MCU 6 can realize accurate regulation and control of the operating speed, number of steps and direction of the bipolar stepper motor. Through the real-time detection of current size and direction by the H-bridge structure, the test accuracy and stability are improved, and the overcurrent protection mechanism is integrated. When abnormal current is detected, the drive signal is automatically turned off to avoid damage to the motor and circuit, so it is suitable for various test requirements of bipolar stepper motor electric actuators 10 and supports motor driving of different voltage and current specifications.

[0043] Compared with single machine step motor, unipolar step motor drive circuit is simple and only needs transistor or integrated switch, while bipolar step motor drive is complex and needs H bridge circuit, the current direction in unipolar step motor drive circuit is unidirectional, the current direction in bipolar step motor drive circuit is bidirectional, the bipolar step motor drive circuit not only detects the size of the current but also judges the direction, the current detection module 8 in the test device 12 judges the direction of the current while measuring the size of the current, and the measurement is accurate, stable and reliable.

[0044] As shown in Figure 4 In some embodiments of the utility model, the current detection module 8 is connected with MCU 6 and double H bridge step motor drive module 7 respectively, and the current detection module 8 is used to detect the current signal used for driving bipolar step motor in double H bridge step motor drive module 7 and transmit to MCU 6.

[0045] Further refine the above scheme, the circuit of current detection module 8 is mainly composed of operational amplifier, resistance and capacitor, and the main function of this circuit is to detect bus current, with overcurrent, overload and dry running protection function. Current detection module 8 sets precision sampling resistance in the current loop of double H bridge step motor drive module 7, and uses the voltage drop between the resistance to detect the current signal used for driving bipolar step motor. After the detected current signal is amplified, filtered and processed, it is transmitted to MCU 6. MCU 6 also sets a normal current range in advance, and when detecting current anomaly, such as overcurrent or short circuit, MCU 6 will quickly respond, control double H bridge step motor drive module 7 to stop working, avoid damage to motor and test device 12 caused by excessive current, and ensure the safety of the test process.

[0046] As shown in Figure 7 In some embodiments of the utility model, display screen module 9 is connected with MCU 6, and display screen module 9 is used to display test parameters, test process data and test results.

[0047] It should be noted that before testing, the user can set test parameters through key input module 4, and these parameters will be displayed on display screen module 9 in real time, which is convenient for the user to confirm and modify. In the test process, display screen module 9 will dynamically display the running parameters of bipolar step motor electric actuator 10, such as real-time running angle, speed, current, etc., so that the user can intuitively understand the test progress. After testing, display screen module 9 will clearly show the test results, and if the test fails, it will also show the reason and specific problem point, which provides convenience for the user to analyze test data and find problems.

[0048] In some embodiments of the utility model, bipolar stepper motor electric actuator 10 is connected with MCU 6, bipolar stepper motor electric actuator 10 is used to transmit the feedback signal of electric actuator body to MCU 6, and compares its data with digital angle sensor 11 in testing device 12.These feedback signals contain the actual running state information of motor, such as the actual position of motor, running speed etc.MCU 6 receives the feedback signal, compares and analyzes it with the angle data obtained by digital angle sensor 11, thereby judging whether the running of bipolar stepper motor electric actuator 10 meets the design requirement, and providing important basis for the determination of test result.

[0049] In some embodiments of the utility model, digital angle sensor 11 is connected with MCU 6 and bipolar stepper motor electric actuator 10 respectively, digital angle sensor 11 obtains the real-time running angle of bipolar stepper motor electric actuator 10 and transmits it to MCU 6, for comparison, calculation and test result judgment.

[0050] As an example, digital angle sensor 11 obtains the real-time running angle of bipolar stepper motor electric actuator 10 in real time through internal angle measuring element.Digital angle sensor 11 transmits the measured angle data to MCU 6 in the form of digital signal.MCU 6 compares and calculates these data with the feedback signal of bipolar stepper motor electric actuator 10, and judges the precision and accuracy of motor running.For example, if the angle measured by digital angle sensor 11 deviates greatly from the feedback angle of actuator, it indicates that the actuator may have abnormal running, and MCU 6 makes corresponding judgment accordingly, improving the accuracy and reliability of test result.

[0051] In the description of the specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the utility model.In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way.

[0052] The above is only an example and description of the utility model, and those skilled in the art can make various modifications or supplements or replace with similar ways, as long as it does not deviate from the utility model or exceed the scope defined by the present claims, which shall belong to the protection scope of the utility model.

Claims

1. A dual pole stepper motor electric actuator test apparatus, characterized by, The test device is connected with a bipolar stepping motor electric actuator and an external power supply, the external power supply supplies power for the test device, the test device controls the operation of the bipolar stepping motor electric actuator and acquires operation parameters of the bipolar stepping motor electric actuator, and the acquired operation parameters are compared with preset parameters to determine whether the bipolar stepping motor electric actuator meets design requirements; The test device comprises a power module, a control unit, an input and output unit and a double-H-bridge stepping motor driving module, the control unit comprises an MCU, a voltage detection module, a current detection module and a digital angle sensor, and the input and output unit comprises a key input module, a display screen module and a buzzer module. The driving source of the bipolar stepping motor electric actuator is a bipolar stepping motor, the driving circuit of the bipolar stepping motor comprises resistors, a driving chip, a signal interface and eight MOSFETs, the eight MOSFETs are divided into two groups of double-H-bridge structures, each H-bridge structure is used for driving two-phase windings of the bipolar stepping motor, and the driving chip is used for receiving control signals of the MCU.

2. A double pole stepper motor electro-actuator testing device according to claim 1, characterised in that, The power module comprises a 5V LDO module, the power module is connected with the external power supply and the MCU respectively, and the power module is used for converting power supply of the external power supply into 5V and transmitting the power supply to the MCU for power supply.

3. A double pole stepper motor electric actuator testing device according to claim 1, characterized in that, The voltage detection module is connected with the power module and the MCU respectively, detects the power supply voltage, and transmits a voltage signal to the MCU for detection.

4. A double pole stepper motor electro-actuator testing device as claimed in claim 1, wherein, The key input module is connected with the MCU, and is used for controlling external signal input.

5. A double pole stepper motor electro-actuator testing device as claimed in claim 1, wherein, The buzzer module is connected with the MCU, and is used for outputting prompt sound of a test result.

6. A double pole stepper motor electro-actuator testing device as claimed in claim 1, wherein, The double-H-bridge stepping motor driving module is connected with the MCU and the bipolar stepping motor electric actuator respectively, the MCU outputs control signals to control opening and closing of the double-H-bridge stepping motor driving module, and then drives the bipolar stepping motor in the bipolar stepping motor electric actuator to operate through the double-H-bridge stepping motor driving module, and finally drives the bipolar stepping motor electric actuator to operate.

7. A double pole stepper motor electric actuator testing device as claimed in claim 1, wherein, The current detection module is connected with the MCU and the double-H-bridge stepping motor driving module respectively, and is used for detecting a current signal used for driving the bipolar stepping motor in the double-H-bridge stepping motor driving module and transmitting the current signal to the MCU.

8. A double pole stepper motor electro-actuator testing device as claimed in claim 1, wherein, The display screen module is connected with the MCU, and is used for displaying test parameters, test process data and test results.

9. A double pole stepper motor electric actuator testing device as claimed in claim 1, wherein, The bipolar stepping motor electric actuator is connected with the MCU, and is used for transmitting feedback signals of a body of the electric actuator to the MCU.

10. A double pole stepper motor electric actuator testing device as claimed in claim 1, wherein, The digital angle sensor is connected with the MCU and the bipolar stepping motor electric actuator respectively, acquires real-time operation angles of the bipolar stepping motor electric actuator and transmits the real-time operation angles to the MCU, and is used for comparison, calculation and judgment of test results.

Images