Electromagnetic servo motor encoder

Abstract

This invention relates to an electromagnetic servo motor encoder, which includes at least a power supply circuit, a communication interface, a servo motor controller, an MCU control unit, and an electromagnetic digital angle sensor. The communication interface serves as the connection interface between the MCU control unit and the servo motor controller, enabling signal exchange between them. The servo motor controller receives signals from the MCU control unit to drive the servo motor. The MCU control unit is used to set the operating mode of the servo motor and connects to the servo motor controller via the communication interface. The electromagnetic digital angle sensor is a hardware component connected to the MCU control unit. It uses electromagnetic induction to convert signals measured from the servo motor into changes in the self-inductance and mutual inductance of a coil, allowing the servo motor to operate more accurately.

Description

Technical Field

[0001] This invention relates to an electromagnetic induction type servo motor encoder, and more particularly to an innovative design that uses an electromagnetic digital angle sensor to measure changes in displacement, pressure, flow rate, and vibration during the operation of a servo motor, transmits the data to an MCU control unit, and then uses the MCU control unit to calculate and drive the servo motor to operate more precisely. Prior Technology

[0002] To meet the needs of certain industries that require high precision in motor control, servo motors are often used instead of traditional motors. However, the accuracy of a servo motor depends on the angle sensor. Common sensors include optical and electromagnetic types. While optical sensors offer better accuracy, they have drawbacks: image signal processing generates a lot of heat, causing components to operate in a high-temperature environment, resulting in a very high failure rate. Furthermore, lubricating oil vapors can seep in during maintenance, contaminating the lens and related components and causing sensor misjudgments.

[0003] As a result, electromagnetic digital angle sensors have emerged. This invention rapidly improves the accuracy of electromagnetic digital angle sensors by using magnetic field sensing ICs to measure magnetic field strength, which is then processed and converted into digital data and sent to the MCU control unit for interpretation. The MCU control unit then drives the servo motor controller to control the speed and direction of the servo motor, thereby eliminating the shortcomings of optical sensors in application. Summary of the Invention

[0004] The purpose of this invention is to provide an innovative electromagnetic servo motor encoder, which obtains the signal of a servo motor detected by an electromagnetic digital angle sensor through an MCU control unit, and then sets the operating mode of the servo motor by the MCU control unit and drives the servo motor controller to control the speed and direction of the servo motor, so that the servo motor can operate more accurately.

[0005] To achieve the aforementioned objectives, the electromagnetic servo motor encoder of the present invention includes at least: a power supply circuit, a communication interface, a servo motor controller, an MCU control unit, and an electromagnetic digital angle sensor; the aforementioned communication interface is the connection interface between the aforementioned MCU control unit and the aforementioned servo motor controller, enabling signal communication between the aforementioned MCU control unit and the aforementioned servo motor controller; the aforementioned servo motor controller receives signals from the aforementioned MCU control unit to drive a servo motor to operate; the aforementioned MCU control unit is used to set the operating mode of the aforementioned servo motor and is connected to the aforementioned servo motor controller via the aforementioned communication interface; the aforementioned electromagnetic digital angle sensor is a hardware component connected to the aforementioned MCU control unit, and the aforementioned electromagnetic digital angle sensor converts the signal measured from the aforementioned servo motor into changes in the self-inductance and mutual inductance of the coil through the principle of electromagnetic induction, enabling the servo motor to operate more accurately.

[0006] The present invention, the aforementioned MCU control unit, includes at least: an interface format A / B to a-format conversion line, used to receive signals such as displacement, pressure, flow rate, and vibration detected by an electromagnetic digital angle sensor, and convert them into digital signals; a noise filter, used to filter out noise from the aforementioned digital signals to avoid affecting the correct operation of the MCU control unit; an a-format sequence data receiving line, used to extract valid data from the a-format for use; a data interpretation, used to read the operating information of the electromagnetic digital angle sensor or to perform sensor operation calibration; a sequence data transmission interface A, which can transmit the operating information of the electromagnetic digital angle sensor read by the data interpretation to the operation of the electromagnetic digital angle sensor; and a sequence data transmission interface B, which can transmit calibration information to the electromagnetic digital angle sensor to correct the operation of the electromagnetic digital angle sensor in a timely manner and ensure the correct operation of the servo motor. Simple Explanation of the Diagram

[0007] Figure 1 is a block diagram of the operation of the present invention. Figure 2 is a block diagram of the operation of the MCU control unit. Implementation

[0008] To further understand the present invention, the optimal implementation of the electromagnetic servo motor encoder can be referred to the embodiments in Figures 1 and 2. The electromagnetic servo motor encoder of the present invention includes at least a power supply circuit 1, a communication interface 2, a servo motor controller 3, an MCU control unit 4, and an electromagnetic digital angle sensor 5.

[0009] The aforementioned power supply circuit 1 provides power to all system units of the electromagnetic servo motor encoder.

[0010] The aforementioned communication interface 2 serves as the connection interface between the aforementioned MCU control unit 4 and the aforementioned servo motor controller 3, enabling signal communication between them. Furthermore, the illustrations of this invention use an RS-485 communication interface to explain the operation of the invention, but this is not intended to limit it to that RS-485 communication interface. Any other suitable communication interface 2 that can resolve the effects of noise and data corruption is acceptable. Examples include RS-422, RS-232, RS-232C, Universal Serial Bus (USB), or IEEE 1394 (also known as FireWire or i-Link), etc.

[0011] The aforementioned servo motor controller 3 receives signals from the aforementioned MCU control unit 4 to drive a servo motor 6 to operate, so that the servo motor 6 can operate correctly or modify the action of the servo motor 6.

[0012] The aforementioned MCU control unit 4 is used to set the operating mode of the aforementioned servo motor 6 and is connected to the aforementioned servo motor controller 3 via the aforementioned communication interface 2. The aforementioned MCU control unit 4 includes at least: an interface format A / B to a-format conversion line 40, a noise filter 41, an a-format sequence data receiving line 42, a data interpretation unit 43, a sequence data transmission interface (A) 44, and a sequence data transmission interface (B) 45.

[0013] The aforementioned A / B to a-format conversion line 40 is used to receive signals (including displacement, pressure, flow, and vibration signals) detected by the aforementioned electromagnetic digital angle sensor 5 from the aforementioned servo motor 6, and convert them into digital signals. The aforementioned noise filter 41 is used to filter out noise from the digital signals of the aforementioned A / B to a-format conversion line 40, so as to avoid affecting the correct operation of the MCU control unit 4. The aforementioned a-format sequence data receiving line 42 extracts the valid data from the a-format digital signals for use. The aforementioned data interpretation unit 43 is used to read the operating information of the aforementioned electromagnetic digital angle sensor 5 and to perform the operation correction of the aforementioned electromagnetic digital angle sensor 5. The aforementioned sequence data transmission interface (A) 44 transmits the operating information read by the aforementioned data interpretation unit 43 to the aforementioned electromagnetic digital angle sensor 5, so that the electromagnetic digital angle sensor 5 can operate correctly. The aforementioned sequence data transmission interface (B) 45 transmits the information from the aforementioned data interpretation unit 43 for operation correction to the aforementioned electromagnetic digital angle sensor 5, so as to correct the operation of the aforementioned electromagnetic digital angle sensor 5 in a timely manner and ensure the correct operation of the aforementioned servo motor 6.

[0014] The aforementioned electromagnetic digital angle sensor 5 is a hardware component and is connected to the aforementioned MCU control unit 4. The aforementioned electromagnetic digital angle sensor 5 uses the principle of electromagnetic induction to convert the signals (including displacement, pressure, flow and vibration signals) measured from the aforementioned servo motor 6 into changes in the self-inductance coefficient and mutual inductance coefficient of the coil, so that the aforementioned servo motor 6 can operate more accurately.

[0015] Thus, this invention uses the A / B to a-format conversion line 40 of the MCU control unit to receive operating data from the electromagnetic digital angle sensor 5, converts it into digital signals, and processes it through the data interpretation unit 43 to obtain the operating information of the electromagnetic digital angle sensor 5, or to perform operation calibration of the electromagnetic digital angle sensor 5. The correct operating information is then transmitted to the electromagnetic digital angle sensor 5 via the sequential data transmission interface (A) 44, ensuring the correct operation of the electromagnetic digital angle sensor 5. Alternatively, if the read information requires correction, the correction signal is transmitted to the electromagnetic digital angle sensor 5 via the sequential data transmission interface (B) 45 to correct the operation of the electromagnetic digital angle sensor 5 in a timely manner, ensuring the correct operation of the servo motor 6. Therefore, this invention, by using the MCU control unit 4 to read the operating signals of the electromagnetic digital angle sensor 5, can accurately control the operation of the servo motor 6. This invention indeed meets the criteria of inventiveness, practicality, and progressiveness, and constitutes part of this application.

[0016] The foregoing embodiments or figures are not intended to limit the nature or use of the present invention. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

[0017] 1: Power supply circuit 2: Communication Interface 3: Servo motor controller 4: MCU control unit 40: Interface format A / B to a-format conversion path 41: Noise Filter 42: A-format sequence data receiving line 43: Data Interpretation Unit 44: Sequence Data Transfer Interface (A) 5: Electromagnetic digital angle sensor 6: Servo Motor

Claims

1. An electromagnetic servo motor encoder, comprising at least: a power supply circuit, a communication interface, a servo motor controller, an MCU control unit, and an electromagnetic digital angle sensor; the communication interface is a connection interface between the MCU control unit and the servo motor controller, enabling signal communication between the MCU control unit and the servo motor controller; the servo motor controller receives signals from the MCU control unit to drive a servo motor; the MCU control unit is used to set the operating mode of the servo motor and is connected to the servo motor controller via the communication interface; the electromagnetic digital angle sensor is a hardware component connected to the MCU control unit, and the electromagnetic digital angle sensor converts the signal measured from the servo motor into changes in the self-inductance and mutual inductance of the coil using the principle of electromagnetic induction.

2. The electromagnetic servo motor encoder according to claim 1, wherein the aforementioned MCU control unit includes at least an interface format A / B to a-format conversion circuit, a noise filter, an a-format sequence data receiving circuit, a data interpretation unit, a sequence data transmission interface (A) and a sequence data transmission interface (B). The aforementioned interface format A / B to a-format conversion circuit is used to receive the signal obtained from the aforementioned servo motor detected by the aforementioned electromagnetic digital angle sensor and convert it into a digital signal; the aforementioned noise filter is used to filter out noise from the digital signal of the aforementioned interface format A / B to a-format conversion circuit; the aforementioned a-format sequence data receiving circuit extracts the valid data from the a-format digital signal for use; the aforementioned data interpretation unit is used to read the operating information of the aforementioned electromagnetic digital angle sensor and to perform the operating correction of the aforementioned electromagnetic digital angle sensor; the aforementioned sequence data transmission interface (A) transmits the operating information read by the aforementioned data interpretation unit to the aforementioned electromagnetic digital angle sensor; the aforementioned sequence data transmission interface (B) transmits the operating correction information performed by the aforementioned data interpretation unit to the aforementioned electromagnetic digital angle sensor to correct the operation of the aforementioned electromagnetic digital angle sensor.

3. The electromagnetic servo motor encoder according to claim 1 or 2, wherein the aforementioned electromagnetic digital angle sensor measures the displacement, pressure, flow rate and vibration signals of the aforementioned servo motor.

4. The electromagnetic servo motor encoder according to claim 1 or 2, wherein the aforementioned communication interface may be an RS-422 communication interface, an RS-232 communication interface, an RS-232C communication interface, a Universal Sequence Bus communication interface, or an IEEE1394 communication interface.

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