CN215990617U

CN215990617U - Motor drive control circuit

Info

Publication number: CN215990617U
Application number: CN202122093725.8U
Authority: CN
Inventors: 唐浩; 吴小杰; 王啸; 卢联杰; 查坤; 张锐; 仁钦
Original assignee: Hubei Sanjiang Aerospace Wanfeng Technology Development Co Ltd
Current assignee: Hubei Sanjiang Aerospace Wanfeng Technology Development Co Ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-03-08
Anticipated expiration: 2031-08-31

Abstract

The utility model discloses a motor drive control circuit. The circuit comprises a main controller, a network interface circuit, a power management circuit, a switching value circuit and a motor driving circuit, wherein the first end of the main controller is electrically connected with the network interface circuit, the second end of the main controller is electrically connected with the switching value circuit, the main controller receives an upper computer signal through the network interface circuit and controls the switching value circuit to generate a switching value signal to output to the motor driving circuit and receive a switching value signal of the switching value circuit, the switching value signal is sent to the upper computer through the network interface circuit, and the power management circuit respectively provides power for the main controller, the network interface circuit, the switching value circuit and the motor driving circuit. The motor driving control circuit has good performance and high reliability.

Description

Motor drive control circuit

Technical Field

The utility model belongs to the technical field of control, and particularly relates to a motor drive control circuit.

Background

At present, devices for controlling the operation of a dc motor generally control the rotation direction and the rotation speed of the motor. The sensor is adopted to obtain the information of the current working state of the motor, and the steering or rotating speed of the motor is changed through the control circuit according to the purpose and the sampling information returned by the sensor, so that the purpose of control is achieved, and the control mode is single. When the requirements for the in-place state and the working state of the motor are higher, the above mode cannot be accurately controlled, the power failure when the motor works in place cannot be realized, and the current state of the motor driving device is locked. Once the power failure cannot be timely realized or the state after the power failure generates a rotation phenomenon due to reasons such as inertia and the like, the reliability of the product is greatly influenced.

SUMMERY OF THE UTILITY MODEL

In view of at least one of the drawbacks or needs for improvement in the related art, the present invention provides a motor driving control circuit with good performance and high reliability.

To achieve the above object, the present invention provides a motor drive control circuit including: main control unit, network interface circuit, power management circuit, switching value circuit and motor drive circuit, main control unit's first end with the network interface circuit electricity is connected, main control unit's second end with switching value circuit electricity is connected, main control unit passes through network interface circuit receives the host computer signal, and control switching value circuit produces switching value signal output and gives motor drive circuit, and the receipt switching value circuit's switching value signal of putting through network interface circuit sends for the host computer, power management circuit gives respectively main control unit network interface circuit switching value circuit the motor drive circuit power supply.

Preferably, the main controller is a dual-core ARM SOC platform, and the ARM SOC platform includes a UART interface, an HDLC interface, a GPIO interface, an SPI interface, a QSPI interface, and an I²And C, interface.

Preferably, the power management circuit comprises a 28V to 5V circuit and a main controller power supply circuit, the main controller power supply circuit is electrically connected with the 28V to 5V circuit, and the main controller power supply circuit is realized by adopting an LTM4644 chip.

Preferably, the network interface circuit comprises a network controller and an interface driving chip, the network controller is 88E1111-B2-BAB1I000 chip, and the interface driving chip is HX5004NL network transformer.

Preferably, the output end of the motor driving circuit is further connected with a sampling circuit, the sampling circuit feeds sampling signals back to the main controller, the main controller generates power control signals to the power management circuit, and the power management circuit receives the control of the main control module to input power supply voltage to the motor driving circuit or disconnects the control to input power supply voltage to the motor driving circuit.

Preferably, a fusing resistor is connected in series between the power management circuit and the motor driving circuit, two ends of the fusing resistor are connected in parallel with a control switch, and the control switch is controlled to be switched on or off by the main controller.

Generally, the motor drive control circuit has the advantages of good performance and high reliability through the structure of the main controller, the network interface circuit and the switching value circuit, and compared with the traditional bus interfaces such as RS422, CAN and 1553B, the network interface has obvious speed advantage and system matching advantage.

Drawings

Fig. 1 is a structural diagram of a motor drive control circuit according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, a motor drive control circuit according to an embodiment of the present invention includes: the main control unit, the network interface circuit, the power management circuit, switching value circuit and motor drive circuit, the first end and the network interface circuit electricity of main control unit are connected, the second end and the switching value circuit electricity of main control unit are connected, main control unit receives the host computer signal through network interface circuit, and control switching value circuit production switching output signal output gives motor drive circuit, main control unit receives switching value circuit's switching input signal and sends for the host computer through network interface circuit, the power management circuit is respectively for main control unit, the network interface circuit, switching value circuit, motor drive circuit power supply.

The network interface circuit mainly realizes the network communication function with the upper computer, controls the switching value circuit after being processed by the core controller after receiving the network signal of the upper computer, and uploads the switching value signal to the upper computer through the network interface circuit after being converted by the main core controller of the input signal.

Preferably, the main controller is a dual-core ARM SOC platform, and the ARM SOC platform comprises a UART interface, an HDLC interface, a GPIO interface, an SPI interface, a QSPI interface and an I²And C, interface. In one embodiment, the main controller selects a LSoCAM0201 type dual core ARM SOC platform. The dual-core ARM SoC circuit integrates 2 processor cores, each core comprises an SIMD architecture co-processing unit and has high-speed floating-point operation capability. The processor core is provided with resources such as a 2-level cache, an SDRAM interface and the like, so that the information is quickly interacted, and the MMU memory management unit realizes memory allocation and management. Simultaneously, a large number of peripheral interfaces support UART/HDLC, GPIO, SPI, QSPI and I²C. Gigabit Ethernet controller interface, etc., providing rich measurement resource and control resource, meeting the requirement of control and resolutionAnd process management and the like.

In one embodiment, a dual core ARM SOC may support 40 independent bi-directional GPIOs, each configurable as either an input or an output; the system supports a 1-path Ethernet controller, full-duplex or half-duplex communication and a DMA mode, a hard receiving buffer area and a sending buffer area are both 4K bytes and can be configured to be a 10M/100M/1000M working mode, a PHY interface is RGMII, an interrupt function is supported, and the technical requirements of control panel design are met.

The power supply part mainly processes input power supplies (DC 18V-33V) and converts the input power supplies into voltage signals required by each module, and mainly comprises SOC power consumption (3.3V, 2.5V and the like), a network interface circuit (3.3V), a starter output circuit (3.3V), a motor driving circuit and the like. The external power supply signals (DC 18V-33V) are converted into 5V signals through the DC/DC power supply module, and then are converted into voltages for each chip through the power supply chip.

In one embodiment, the power management circuit includes a 28V to 5V circuit and a main controller power supply circuit; the ARM dual-core Cortex-A9 SOC power supply circuit adopts the chip LTM4644, can output 4 paths of voltage signals, and each path can provide 4A DC and 5A peak output current to meet the use requirement. DDR supply voltage 1.5V and DDR reference voltage 0.75V adopt chip TPS 51200.

Preferably, the network interface circuit comprises a network controller and an interface driving chip, the network controller adopts an 88E1111-B2-BAB1I000 chip, the interface driving chip adopts an HX5004NL network transformer, and the ten-megabyte/hundred-megabyte/giga-megabyte Ethernet communication can be realized.

Preferably, in consideration of protection of the motor driving circuit, the reliability and safety of the circuit are further improved, the output end of the motor driving circuit is further connected with a sampling circuit, the sampling circuit feeds sampling signals back to the main controller, the main controller generates power control signals to the power management circuit, and the power management circuit receives control of the main control module to input power supply voltage to the motor driving circuit or disconnect the input of the power supply voltage to the motor driving circuit.

Preferably, a fusing resistor is connected in series between the power management circuit and the motor driving circuit, two ends of the fusing resistor are connected in parallel with a control switch, and the control switch is controlled by the main controller to be switched on or switched off.

After subsequent debugging and verification, the motor drive control circuit is correctly designed, can normally receive the instruction of the upper computer, and is switched on through the switching value circuit to control the equipment to act. Meanwhile, the state of the equipment can be correctly fed back, and the input information is converted into a network signal and then uploaded to an upper computer. The scheme can realize expected functions, greatly improves the universality of the equipment, and can be widely applied to the circuit design of the subsequent control single-machine communication interface.

It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the utility model, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims

1. A motor drive control circuit, comprising: main control unit, network interface circuit, power management circuit, switching value circuit and motor drive circuit, main control unit's first end with the network interface circuit electricity is connected, main control unit's second end with switching value circuit electricity is connected, main control unit passes through network interface circuit receives the host computer signal, and control switching value circuit produces switching value signal output and gives motor drive circuit, and the receipt switching value circuit's switching value signal of putting through network interface circuit sends for the host computer, power management circuit gives respectively main control unit network interface circuit switching value circuit the motor drive circuit power supply.

2. The motor drive control circuit of claim 1, wherein the master controller is a dual-core ARM SOC platform, the ARM SOC platform comprising a UART interface, an HDLC interface, a GPIO interface, an SPI interface, a QSPI interface, an I interface²And C, interface.

3. A motor drive control circuit according to claim 1 wherein the power management circuit comprises a 28V to 5V circuit and a main controller power supply circuit, the main controller power supply circuit is electrically connected to the 28V to 5V circuit, and the main controller power supply circuit is implemented using an LTM4644 chip.

4. The motor drive control circuit of claim 1 wherein said network interface circuit comprises a network controller and an interface driver chip, said network controller is selected from 88E1111-B2-BAB1I000 chip, said interface driver chip is selected from HX5004NL network transformer.

5. The motor driving control circuit according to claim 1, wherein a sampling circuit is further connected to an output end of the motor driving circuit, the sampling circuit feeds a sampling signal back to the main controller, the main controller generates a power supply control signal to the power management circuit, and the power management circuit receives control of the main controller to input a power supply voltage to the motor driving circuit or to disconnect the input of the power supply voltage to the motor driving circuit.

6. A motor driving control circuit according to claim 5, wherein a fuse resistor is connected in series between the power management circuit and the motor driving circuit, and control switches are connected in parallel to both ends of the fuse resistor, and the control switches are controlled by the main controller to be turned on or off.