Driving device of electromagnetic driving micro motor
阅读说明：本技术 一种电磁驱动微型电机的驱动装置 (Driving device of electromagnetic driving micro motor ) 是由 邓自然 黄宇传 姜亚敏 王书方 于 2019-08-15 设计创作，主要内容包括：本发明公开了一种电磁驱动微型电机的驱动装置,包括主控模块、信号调变模块、全桥驱动电路、振镜模块和感应模块；所述主控模块用于发送PWM信号,并可接收所述感应模块的反馈信号；所述信号调变模块将主控模块发送的PWM信号进行转换和放大,使得驱动信号变成可以驱动所述全桥驱动电路的驱动信号；本发明通过设置感应模块实时反馈驱动电机的状态,能够提供准确的电机工作状态信息；振镜模块可以实现正转和反转角度分别调整；通过主控模块和信号调变模块可以实现自动扫频；第二光电感应器可以替换为扫描镜,结构更简单,成本更低。(The invention discloses a driving device of an electromagnetic driving micro motor, which comprises a main control module, a signal modulation module, a full-bridge driving circuit, a galvanometer module and an induction module, wherein the main control module is used for sending PWM signals and receiving feedback signals of the induction module, the signal modulation module converts and amplifies the PWM signals sent by the main control module to enable the driving signals to be changed into driving signals capable of driving the full-bridge driving circuit, the driving device can provide accurate motor working state information by setting the induction module to feed back the state of the driving motor in real time, the galvanometer module can respectively adjust the positive rotation angle and the negative rotation angle, automatic frequency sweeping can be realized by the main control module and the signal modulation module, and a second photoelectric sensor can be replaced by a scanning mirror, so that the driving device is simpler in structure and lower in cost.)
The driving device of the electromagnetic driving micro motor is characterized by comprising a main control module, a signal modulation module, a full-bridge driving circuit, a galvanometer module and an induction module;
the main control module is used for sending PWM signals and receiving feedback signals of the induction module;
the signal modulation module converts and amplifies the PWM signal sent by the main control module, so that the driving signal is changed into a driving signal for driving the full-bridge driving circuit;
the full-bridge driving circuit receives a driving signal from the signal modulation module and converts the driving signal into a switch control signal of the galvanometer module;
the galvanometer module rotates forwards and backwards according to a switch control signal received from the full-bridge driving circuit and reflects the irradiated light to the sensing module;
after the sensing module senses the light irradiated by the galvanometer module, the sensing module converts the light signal into an electrical signal, the electrical signal is a feedback signal, and the sensing module sends the feedback signal to the main control module.
2. The driving apparatus of kinds of electromagnetic driven micro-motors as claimed in claim 1, wherein the main control module is a main control chip;
the signal modulation module comprises an th full-bridge driver and a second full-bridge driver;
the full-bridge driving circuit comprises an th transistor, a second transistor, a third transistor and a fourth transistor;
the vibration mirror module is an electromagnetic drive micro motor, the PWM output end of the main control chip is connected with the input ends of an th full-bridge driver and a second full-bridge driver, the main control chip sends PWM signals to the two full-bridge drivers, the output end of the th full-bridge driver is connected with the gates of a th transistor and a third transistor, the output end of the second full-bridge driver is connected with the gates of a second transistor and a fourth transistor, the source electrode of the th transistor and the source electrode of the fourth transistor are connected with a positive power supply, the drain electrode of the th transistor and the source electrode of the second transistor are connected with a electrode of the electromagnetic drive micro motor, the drain electrode of the fourth transistor and the drain electrode of the third transistor are connected with the other electrode of the electromagnetic drive micro motor, the drain electrode of the second transistor and the drain electrode of the third transistor are connected with a negative power supply, and the induction module.
3. The driving device for the electromagnetic micro-motor according to claim 2, wherein the sensing module includes a photoelectric sensor and a second photoelectric sensor, the photoelectric sensor and the second photoelectric sensor are connected to the input end of the main control chip, the photoelectric sensor is disposed on the side of the galvanometer module for receiving the optical signal reflected by the galvanometer module to the side, and the second photoelectric sensor is disposed on the other side of the galvanometer module for receiving the optical signal reflected by the galvanometer module to the other side.
4. The driving device of electromagnetic micro motor as claimed in claim 2, wherein the sensing module includes a photoelectric sensor and a reflector, the photoelectric sensor is connected to the input terminal of the main control chip, the photoelectric sensor is disposed on the side of the galvanometer module for receiving the optical signal reflected by the galvanometer module to the side, the reflector is disposed on the other side of the galvanometer module, and the reflector reflects the optical signal irradiated by the galvanometer module to the photoelectric sensor.
Technical Field
The invention relates to the field of micro motor driving, in particular to a driving device of electromagnetic driving micro motors.
Background
The micro motor is a motor with small volume and capacity and output power of which is below hundreds of watts, and a motor with special requirements on application, performance and environmental conditions, and the micro motor is widely applied in the fields of printing, copying and radar in the existing digital scanning system.
When the laser scanner is used, an operator selects the voltage amplitude, increment value and period of a driving motor according to needs to obtain various different scanning patterns.
Therefore, the conventional driving method of the micro motor is to give voltage signals, and the motor is determined by the structure and the characteristics of the motor and runs at a certain specific rotating speed under a given voltage, such as micro motors disclosed in
The existing driving method of the micro motor is a low-speed control method of servo motors disclosed in publication No. US20100156336A1, which can acquire a speed signal from the servo motor and encode the speed signal to output a low-resolution encoded signal, an insertion calculation unit is provided to receive a low-resolution encoded signal from an encoder to be encoded through an interpolation operation to convert the low-resolution encoded signal into a high-resolution encoded signal to be output therefrom, an insertion servo control chip is provided to set internal parameters and receive the high-resolution encoded signal from the insertion calculation unit and process the high-resolution encoded signal through calculation processing to output a switching control command, and a power module is provided to receive the switching control command from the servo control chip and then transmit the switching control command to the servo motor to adjust the operation speed of the servo motor, but the working states of the motor, such as the rotation speed and the position, cannot be known exactly.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides micro motor driving methods capable of providing feedback information of the running working state of a motor in time, which can correct the working state of the motor in time, improve the consistency of products, realize independent adjustment of forward rotation and reverse rotation of the motor and improve the driving device of the electromagnetic driving micro motor of a motor installation process window.
In order to achieve the above object, the present invention provides driving devices for electromagnetically driving a micro-motor;
comprises a main control module, a signal modulation module, a full-bridge driving circuit, a galvanometer module and an induction module,
the main control module is used for sending PWM signals and receiving feedback signals of the induction module;
the signal modulation module converts and amplifies the PWM signal sent by the main control module, so that the driving signal is changed into a driving signal capable of driving the full-bridge driving circuit;
the full-bridge driving circuit receives a driving signal from the signal modulation module and converts the driving signal into a switch control signal of the galvanometer module;
the galvanometer module rotates forwards and backwards according to a switch control signal received from the full-bridge driving circuit and reflects the irradiated light to the sensing module;
after the sensing module senses the light irradiated by the galvanometer module, the sensing module converts the light signal into an electrical signal, the electrical signal is a feedback signal, and the sensing module sends the feedback signal to the main control module.
Preferably, the main control module is a main control chip;
the signal modulation module comprises an th full-bridge driver and a second full-bridge driver;
the full-bridge driving circuit comprises an th transistor, a second transistor, a third transistor and a fourth transistor;
the vibration mirror module is an electromagnetic drive micro motor, the PWM output end of the main control chip is connected with the input ends of an th full-bridge driver and a second full-bridge driver, the main control chip sends PWM signals to the two full-bridge drivers, the output end of the th full-bridge driver is connected with the gates of a th transistor and a third transistor, the output end of the second full-bridge driver is connected with the gates of a second transistor and a fourth transistor, the source electrode of the th transistor and the source electrode of the fourth transistor are connected with a positive power supply, the drain electrode of the th transistor and the source electrode of the second transistor are connected with a electrode of the electromagnetic drive micro motor, the drain electrode of the fourth transistor and the drain electrode of the third transistor are connected with the other electrode of the electromagnetic drive micro motor, the drain electrode of the second transistor and the drain electrode of the third transistor are connected with a negative power supply, and the induction module.
Preferably, the sensing module includes photoelectric sensors and a second photoelectric sensor, the photoelectric sensor and the second photoelectric sensor are connected to the input end of the main control chip, the photoelectric sensor is disposed on the side of the galvanometer module and is used for receiving the optical signal reflected by the galvanometer module to the side, and the second photoelectric sensor is disposed on the other side of the galvanometer module and is used for receiving the optical signal reflected by the galvanometer module to the other side.
Preferably, the sensing module includes photoelectric sensors and a reflector, the photoelectric sensor is connected to the input end of the main control chip, the photoelectric sensor is disposed on the side of the galvanometer module and is configured to receive the optical signal reflected by the galvanometer module to the side, the reflector is disposed on the other side of the galvanometer module, and the reflector can reflect the optical signal irradiated by the galvanometer module to the photoelectric sensor.
The beneficial effects obtained by the invention are as follows:
1. the induction module is arranged to feed back the state of the driving motor in real time, so that accurate motor working state information can be provided;
2. the galvanometer module can realize the adjustment of the forward rotation angle and the reverse rotation angle respectively;
3. automatic frequency sweeping can be realized through the main control module and the signal modulation module;
4. the second photoelectric sensor can be replaced by a scanning mirror, so that the structure is simpler and the cost is lower.
Drawings
The present invention may be further understood from the following description taken in conjunction with the accompanying drawings, the components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments.
FIG. 1 is a relational block diagram of modules of the present invention;
FIG. 2 is a circuit diagram of embodiments of the present invention;
FIG. 3 is a schematic view of a scanning range of the galvanometer module and the sensing module according to the present invention;
FIG. 4a is a diagram of the main frequency signal of the polarizer of the present invention;
FIG. 4b is a diagram of a galvanometer master frequency PWM modulated preamble signal of the present invention;
FIG. 4c is a diagram of the master frequency PWM modulated synchronization signal of the vibrating mirror of the present invention;
FIG. 4d is a diagram of the electrical signals after PWM modulation of the present invention;
FIG. 4e is a quadrant graph of current after PWM modulation according to the present invention;
fig. 5 is a driving flow chart of the electromagnetic driving micro motor of the invention.
In the figure, a
Detailed Description
For purposes of making the present invention more apparent and readily appreciated, the present invention will now be described in detail with reference to the examples thereof, it being understood that the specific examples described herein are for purposes of illustration only and are not intended to be limiting of the invention.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms described above will be understood by those of ordinary skill in the art according to the specific circumstances.
The micro motor of the present invention is mainly applied to the fields of scanning, laser, etc., for example, in the laser field, the micro motor drives the scanning mirror to reflect the laser irradiated from the laser emitter or other light sources at different angles, so the irradiated light described in the following embodiments all represents the light signal of the above light source, and therefore, no further description is made on the light signal or the light source part.
- 上一篇：一种医用注射器针头装配设备
- 下一篇：一种电动工具的速度控制方法及电动工具