Processing method and device for power failure and shutdown of motor

Abstract

The invention discloses a processing method and a processing device for power failure and shutdown of a motor. The method comprises the following steps: in the process that a control power supply of the motor power-off shutdown control system supplies power to an isolation power supply of the motor power-off shutdown control system, charging a farad capacitor in an energy storage isolation power supply through the isolation power supply, and supplying power to an MCU (Microprogrammed Control Unit) of the motor power-off shutdown control system through a first buck-boost circuit in the energy storage isolation power supply, meanwhile, power is supplied to a brake pipe driving circuit in the energy storage isolation power supply through a second buck-boost circuit; monitoring the control power supply to obtain a monitoring result; and when the monitoring result shows that the control power supply is switched off, discharging is performed through the farad capacitor so as to supply power to the first buck-boost circuit and the second buck-boost circuit. The technical problems that in the prior art, a brake circuit is generally formed by connecting a resistor and a controllable switch to a bus to rapidly discharge the bus, but after weak current is cut off, the controllable switch is uncontrollable, and great potential safety hazards exist are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of motor safety, and in particular to a method and device for processing power failure and shutdown of a motor. Background Art

[0002] With the rapid development of industries such as industrial automation and high-end industrial equipment, high-power and high-speed motors are being used in more and more applications, especially in new energy vehicles, machine tool electric spindles and other products. When designing the drive of high-power and high-speed motors, the back electromotive force generated by motor braking is an issue that must be addressed.

[0003] These back electromotive forces will be applied to the DC bus capacitor, causing the voltage across the bus capacitor to rise sharply, resulting in capacitor damage or even explosion. In the prior art, a brake circuit is generally formed by connecting a resistor and a controllable switch to the bus to quickly discharge the bus, but when the weak current is disconnected, the controllable switch cannot be controlled, which poses a great safety hazard.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present invention provide a method and device for processing power failure and shutdown of a motor, so as to at least solve the technical problem in the related art that a braking circuit is generally formed by connecting a resistor and a controllable switch on the bus to quickly discharge the bus, but when the weak current is disconnected, the controllable switch cannot be controlled, and there is a great safety hazard.

[0006] According to one aspect of an embodiment of the present invention, a motor power-off shutdown control system is provided, comprising: a controller, connected to a module driver and an isolated data transceiver, for obtaining a pulse width modulation (PWM) signal required to drive the motor to operate according to received voltage data and current data, and sending the PWM signal to the module driver to control the power module of the motor, wherein the module driver is a drive circuit of the power module; a brake tube drive circuit, connected to the isolated data transceiver, for isolating and transmitting the PWM signal to the source of the switch tube of the motor through the isolated data transceiver, triggering the switch tube to turn on when the PWM signal is at a high level, and triggering the switch tube to turn off when the PWM signal is at a low level; a bleeder resistor, connected in parallel with the power module, for converting the energy of the bus in the power module into heat dissipation after the switch tube is turned on.

[0007] Optionally, the controller includes: a main control chip, connected to the microcontroller MCU of the motor, and used to obtain the PWM signal according to the voltage data and the current data after receiving the voltage data sent by the MCU, wherein the current data is the current collected from the output of the power module; a peripheral circuit, used to enable the main control chip to work normally, wherein the peripheral circuit includes: a configuration resistor, a filter capacitor, a reset circuit, and an oscillation circuit.

[0008] Optionally, the motor power-off and shutdown control system further includes: a controller power supply, connected to the controller and used to provide working power to the controller.

[0009] Optionally, the motor power-off shutdown control system also includes: a voltage sampling circuit, connected to the MCU and the power module, and used to divide the bus voltage of the motor into a voltage acquisition range of the analog-to-digital conversion module built into the MCU through a voltage-dividing resistor, so as to use the MCU to calculate the bus voltage value of the motor, wherein, when the bus voltage value exceeds a voltage threshold, the switch tube is controlled to discharge the bus; when the bus voltage value does not drop to a predetermined voltage value within a preset time period, the discharge speed of the switch tube is increased until the bus voltage value drops to the predetermined voltage value.

[0010] Optionally, the motor power-off and shutdown control system also includes: an energy storage isolation power supply, connected to the MCU, the brake pipe drive circuit and the controller power supply, and used to, after the controller power supply of the motor is disconnected, generate a first predetermined value voltage through the output of the farad capacitor through a first buck-boost circuit to enable the MCU and the voltage sampling circuit to work normally; and generate a second predetermined value voltage through a second buck-boost circuit to provide a working voltage for the brake pipe drive circuit, so that the switch tube is normally turned on or off.

[0011] Optionally, the energy storage isolation power supply includes: an isolated power supply for input / output of a power supply isolated from each other; a limiting resistor for limiting the maximum charging current of the farad capacitor; a low forward conduction voltage drop diode connected to the limiting resistor for limiting the current flow direction; and the farad capacitor for storing energy to power a low power consumption circuit.

[0012] Optionally, the energy storage isolation power supply also includes: the first buck-boost circuit, which is connected to the MCU and the voltage sampling circuit, and when the farad capacitor is used for power supply, outputs the first predetermined value voltage to provide working power for the MCU and the voltage sampling circuit; the second buck-boost circuit, which is connected to the brake tube drive circuit, is used to provide the second predetermined value voltage to the switch tube to turn the switch tube on or off.

[0013] According to one aspect of an embodiment of the present invention, a method for processing a motor power failure and shutdown is also provided, comprising: in the process in which the control power supply of the motor power failure and shutdown control system supplies power to the isolated power supply of the motor power failure and shutdown control system, charging a farad capacitor in an energy storage isolated power supply of the motor power failure and shutdown control system through the isolated power supply, and supplying power to the MCU of the motor power failure and shutdown control system through a first buck-boost circuit in the energy storage isolated power supply, and supplying power to the brake tube drive circuit in the energy storage isolated power supply through a second buck-boost circuit in the energy storage isolated power supply; monitoring the control power supply to obtain a monitoring result; when the monitoring result indicates that the control power supply is disconnected, discharging through the farad capacitor to supply power to the first buck-boost circuit and the second buck-boost circuit, wherein the first buck-boost circuit outputs a first predetermined value voltage after supplying power to provide a working power supply for the MCU and the voltage sampling circuit, and the second buck-boost circuit provides a second predetermined value voltage to the switch tube of the motor power failure and shutdown control system after supplying power to turn the switch tube on or off.

[0014] According to another aspect of an embodiment of the present invention, a processing device for motor power failure and shutdown is also provided, which is applied to the above-mentioned processing method for motor power failure and shutdown, including: a power supply module, which is used to charge the farad capacitor in the energy storage isolation power supply of the motor power failure and shutdown control system through the isolation power supply during the process in which the control power supply of the motor power failure and shutdown control system supplies power to the isolation power supply of the motor power failure and shutdown control system, and to power the MCU of the motor power failure and shutdown control system through the first buck-boost circuit in the energy storage isolation power supply, and at the same time, power the brake tube drive circuit in the energy storage isolation power supply through the second buck-boost circuit in the energy storage isolation power supply; a monitoring module, which is used to monitor the control power supply to obtain a monitoring result; a discharging module, which is used to discharge through the farad capacitor when the monitoring result indicates that the control power supply is disconnected, so as to power the first buck-boost circuit and the second buck-boost circuit, wherein the first buck-boost circuit outputs a first predetermined value voltage after powering on to provide working power for the MCU and the voltage sampling circuit, and the second buck-boost circuit provides a second predetermined value voltage for the switch tube of the motor power failure and shutdown control system after powering on to turn the switch tube on or off.

[0015] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is further provided, wherein the computer-readable storage medium includes a stored program, wherein the program executes the above-mentioned method for processing power failure and shutdown of the motor.

[0016] According to another aspect of an embodiment of the present invention, a processor is further provided, and the processor is used to run a program, wherein the program executes the above-mentioned processing method for power failure and shutdown of the motor when running.

[0017] According to another aspect of an embodiment of the present invention, a computer program product is provided, comprising computer instructions, wherein when the computer instructions are executed by a processor, the method for processing power failure and shutdown of a motor described above is executed.

[0018] In an embodiment of the present invention, in the process that the control power supply of the motor power-off and shutdown control system supplies power to the isolated power supply of the motor power-off and shutdown control system, the farad capacitor in the energy storage isolation power supply of the motor power-off and shutdown control system is charged through the isolated power supply, and the MCU of the motor power-off and shutdown control system is powered by the first buck-boost circuit in the energy storage isolation power supply, and the brake tube drive circuit in the energy storage isolation power supply is powered by the second buck-boost circuit in the energy storage isolation power supply; the control power supply is monitored to obtain the monitoring result; when the monitoring result indicates that the control power supply is disconnected, the farad capacitor is discharged to power the first buck-boost circuit and the second buck-boost circuit, wherein the first buck-boost circuit outputs a first predetermined value voltage after powering on to provide working power to the MCU and the voltage sampling circuit, and the second buck-boost circuit provides a second predetermined value voltage to the switch tube of the motor power-off and shutdown control system after powering on to make the switch tube turn on or off. Through the technical solution provided by the present invention, the farad capacitor is used to provide temporary power supply for the brake circuit when the driver is powered off. At the same time, the bus voltage is controlled within a safe range by detecting the actual value of the bus voltage and controlling the brake pipe switch, thereby achieving the technical effect of reliably protecting the motor and the driver when both the strong current and the weak current of the driver are disconnected, improving the reliability and safety of the system, and further solving the technical problem in the related art that a brake circuit is generally formed by connecting a resistor and a controllable switch on the bus to quickly discharge the bus, but when the weak current is disconnected, the controllable switch cannot be controlled, and there is a great safety hazard. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 A schematic diagram of a motor power-off shutdown control system according to an embodiment of the present invention;

[0021] Figure 2 is a framework diagram of the overall hardware of a method for processing a motor power failure and shutdown according to an embodiment of the present invention;

[0022] Figure 3 is a flowchart of the execution of the method for processing the motor power failure and shutdown according to an embodiment of the present invention;

[0023] Figure 4is a hardware framework diagram of an energy storage isolation power supply according to an embodiment of the present invention;

[0024] Figure 5 It is a hardware structure block diagram of a mobile terminal of a method for processing a motor power failure and shutdown according to an embodiment of the present invention;

[0025] Figure 6 is a flow chart of a method for processing a motor power failure shutdown according to an embodiment of the present invention;

[0026] Figure 7 is a flowchart of the operation of the isolated energy storage power supply circuit according to an embodiment of the present invention;

[0027] Figure 8 4 is a schematic diagram of a processing device for power failure and shutdown of a motor according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] As introduced in the background technology, in the related art, a brake circuit is generally formed by connecting a resistor and a controllable switch to the bus to quickly discharge the bus, but when the weak current is disconnected, the controllable switch cannot be controlled, which poses a great safety hazard. In view of the above defects, in the embodiments of the present invention, a motor power failure shutdown control system, a motor power failure shutdown processing method and device, a computer readable storage medium, a processor and a computer program product are provided.

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0032] According to one aspect of an embodiment of the present invention, a motor power-off shutdown control system is provided. Figure 1 A schematic diagram of a motor power-off shutdown control system according to an embodiment of the present invention is shown in FIG. Figure 1 As shown, the motor power-off shutdown control system may include: a controller 101, a brake pipe drive circuit 103 and a discharge resistor 105. The motor power-off shutdown control system is described in detail below.

[0033] The controller 101 is connected to the module driver and the isolated data transceiver, and is used to obtain the pulse width modulation PWM signal required to drive the motor according to the received voltage data and current data, and send the PWM signal to the module driver to control the power module of the motor, wherein the module driver is the driving circuit of the power module.

[0034] Figure 2 is a framework diagram of the overall hardware of the method for processing a motor power failure and shutdown according to an embodiment of the present invention, such as Figure 2 As shown, the isolated energy storage circuit includes a controller, a control power supply, an isolated transceiver, an MCU, an S drive, a voltage sampling, an energy storage isolated power supply, a module drive, a power module, C1, C2, S, and R load motors M, wherein the controller is generally composed of a main control chip and its peripheral circuits, and is connected to the module drive and the isolated data transceiver.

[0035] Optionally, the above data may include: voltage data sent by the MCU, current data sampled at the output of the power module, position and speed data fed back by the encoder, and an alarm signal of the drive circuit.

[0036] It should be noted that the processing of the above data is to use the voltage signal, current signal, and position signal for the FOC control algorithm, wherein the alarm signal is used to trigger the alarm and cut off the control PWM output; the sending of the above data is to output the PWM control signal to the module drive circuit.

[0037] Specifically, the main control chip receives the voltage data sent by the MCU, and uses the voltage data together with the collected current data to perform calculations to obtain the PWM signal required to drive the motor, and then sends the PWM signal to the module drive circuit to control the power module.

[0038] It should be noted that the above-mentioned MCU is a microcontroller / single-chip computer, which is used to process the output voltage of the voltage sampling circuit through the internal AD to obtain the bus voltage value and control the switch of the brake pipe. Among them, the AD built into the MCU is mainly based on the successive approximation method. By comparing the analog input signal with the digital output signal, the value of the input signal is gradually determined, thereby converting the analog voltage into a digital signal that can be processed by the MCU. The specific calculation method is as follows: For an analog-to-digital converter (AD) with a range of 3V and a resolution of 12bit, 3V is quantized into 4096 (2^12) parts. When the analog voltage is 1.5V, the output digital quantity is 2048.

[0039] The brake tube drive circuit 103 is connected to the isolated data transceiver, and is used to isolate the PWM signal and transmit it to the source of the motor's switch tube through the isolated data transceiver, triggering the switch tube to turn on when the PWM signal is at a high level, and triggering the switch tube to turn off when the PWM signal is at a low level.

[0040] like Figure 2 As shown, the above brake pipe driving circuit is the driving circuit of the brake pipe S, that is, S drive, and its working principle is as follows: the PWM control signal sent by the MCU is isolated and transmitted to the power side (the S side of the switch tube) (that is, the source of the switch tube) by using isolation devices (optical couplers, capacitive couplers and magnetic couplers) (that is, isolated data transceivers), and the power side drives the S switch tube through the driving voltage generated by the boost DC / DC using MOS or transistors.

[0041] For example, when the PWM wave sent by the MCU is at a high level, the isolation device isolates the high-level signal and transmits it to the power side. The high-level signal controls the MOS or transistor to turn on, thereby turning on the S switch tube. Similarly, when the PWM sent by the MCU is at a low level, the S switch tube is turned off.

[0042] It should be noted that the above-mentioned isolated data transceiver (i.e., isolated transceiver), such as a bidirectional high-speed optocoupler, is used to isolate the data of the control part and the power part, and can isolate strong current and weak current signals. Its principle and working method are as follows: It can generally be divided into optocouplers, capacitive couplers and magnetic couplers. Optocouplers use photoelectric conversion to isolate and transmit signals through light-emitting diodes and phototransistors. Capacitive couplers use electric fields to isolate and transmit signals through capacitors. Magnetic couplers use magnetic fields to isolate and transmit signals through two inductors (coils) that do not contact each other.

[0043] The discharge resistor 105 is connected in parallel with the power module and is used to convert the energy of the bus in the power module into heat energy for dissipation after the switch tube is turned on.

[0044] like Figure 2 As shown, R (i.e., a bleeder resistor) is connected in parallel with the power module, and is used to convert the energy in the bus into heat energy through R for dissipation after the brake pipe is opened.

[0045] In addition, if Figure 2 As shown, the module driver is the driving circuit of the power module; the power module is a module composed of multiple controllable switch tubes; C1 and C2 are bus capacitors, which are used to store energy and provide the power module with the stable voltage required for inversion; S is the brake tube, which is generally a high-power switch tube, and can also be a controllable switch such as a relay and an electromagnetic contactor; the load motor M is generally a high-speed motor (above 10,000 rpm / min) such as an electric spindle.

[0046] It should be noted that the above-mentioned power module and bus capacitors C1 and C2 are protected objects. When abnormal conditions such as power failure and shutdown occur, the control power supply and main control fail, and the electromotive force generated by the motor shutdown is superimposed on the DC bus, which will cause the bus voltage to rise rapidly, causing damage to the protected objects, the power module and bus capacitors C1 and C2. In the field of servo drive, the power module is generally a module composed of multiple IGBTs or MOS power tubes. The role of the power module in the servo drive is: the power tube in the module is turned on and off under the control of the drive circuit, and the DC power in the DC bus is converted into AC power with the frequency and voltage required by the user, which is used to drive the servo motor.

[0047] As can be seen from the above, in an embodiment of the present invention, by connecting the controller to the module driver and the isolated data transceiver, a pulse width modulation (PWM) signal required for driving the motor to operate is generated according to the received voltage data and current data, and the signal is sent to the module driver, thereby controlling the power module of the motor; the brake tube drive circuit is connected to the isolated data transceiver to control the switch tube of the motor, so that when it receives the PWM signal, it can control the on and off of the switch tube according to the high and low levels of the signal, which is used to accurately control the speed and direction of the motor; the discharge resistor is connected in parallel with the power module, which is used to convert the energy of the bus in the power module into heat dissipation after the switch tube is turned on, so as to achieve the purpose of using the farad capacitor to provide temporary power supply for the brake circuit when the driver is powered off. At the same time, by detecting the actual value of the bus voltage and controlling the brake tube switch, the bus voltage is controlled within a safe range, thereby achieving the technical effect of reliably protecting the motor and the driver when both the strong and weak currents of the driver are disconnected, thereby improving the reliability and safety of the system.

[0048] The technical solution provided by the embodiment of the present invention solves the technical problem that in the related art, a braking circuit is generally formed by connecting a resistor and a controllable switch on the bus to quickly discharge the bus, but when the weak current is disconnected, the controllable switch cannot be controlled, which poses a great safety hazard.

[0049] According to the above embodiment of the present invention, the controller includes: a main control chip, which is connected to the microcontroller MCU of the motor, and is used to obtain a PWM signal according to the voltage data and current data after receiving the voltage data sent by the MCU, wherein the current data is the current collected from the output of the power module; a peripheral circuit, which is used to make the main control chip work normally, wherein the peripheral circuit includes: a configuration resistor, a filter capacitor, a reset circuit, and an oscillation circuit.

[0050] Figure 3 FIG. 4 is a flowchart of the execution of the method for processing the motor power failure and shutdown according to an embodiment of the present invention. Figure 3 As shown, the main control chip is used to receive the voltage data sent by the MCU. The main control uses these voltage data together with the collected current data to perform calculations to obtain the PWM signal required to drive the motor, and then sends the PWM signal to the module drive circuit to control the power module. The peripheral circuit is a necessary circuit to enable the main control chip to work normally.

[0051] According to the above embodiment of the present invention, the motor power-off and shutdown control system further includes: a controller power supply connected to the controller and used to provide working power to the controller.

[0052] In this embodiment, the controller power supply is connected to the controller for powering the controller, which is generally a switching power supply, a power module, etc., to ensure that the controller can operate normally and realize the power-off and shutdown control function of the motor. The stable power supply of the controller power supply is the basis for the normal operation of the system.

[0053] According to the above embodiment of the present invention, the motor power-off and shutdown control system also includes: a voltage sampling circuit, which is connected to the MCU and the power module, and is used to divide the bus voltage of the motor into the voltage acquisition range of the analog-to-digital conversion module built into the MCU through a voltage-dividing resistor, so as to use the MCU to calculate the bus voltage value of the motor, wherein when the bus voltage value exceeds the voltage threshold, the switch tube is controlled to discharge the bus; when the bus voltage value does not drop to the predetermined voltage value within a preset time length, the discharge speed of the switch tube is increased until the bus voltage value drops to the predetermined voltage value.

[0054] In this embodiment, voltage sampling is generally performed by dividing the voltage with multiple resistors, and there are also sensors that utilize Hall effect sampling. The voltage sampling circuit can monitor the motor bus voltage in real time, and implement power-off and shutdown control of the motor by sampling and processing the voltage. By increasing the discharge speed of the switching tube, the motor shutdown process can be accelerated to ensure that the bus voltage drops rapidly to a predetermined safe voltage value, thereby effectively protecting the safe operation of the motor and related equipment.

[0055] Specifically, the sampling object of the above-mentioned voltage sampling circuit is the DC bus voltage, and the sampling method is: the voltage sampling circuit divides the bus voltage into the acquisition range of the MCU built-in AD through resistance division, and the built-in AD converts the analog voltage into a digital quantity, and the MCU obtains the bus voltage value by calculating the digital quantity.

[0056] like Figure 3 As shown, when the bus voltage exceeds the voltage threshold, the MCU generates PWM information according to the main control braking command, controls the drive circuit to drive the S switch tube according to PWM and turns it on and off according to the drive signal to brake.

[0057] According to the above embodiment of the present invention, the motor power-off and shutdown control system also includes: an energy storage isolation power supply, which is connected to the MCU, the brake pipe drive circuit and the controller power supply, and is used to, after the controller power supply of the motor is disconnected, generate a first predetermined value voltage through the output of the farad capacitor through a first buck-boost circuit to enable the MCU and the voltage sampling circuit to work normally; and generate a second predetermined value voltage through a second buck-boost circuit to provide a working voltage for the brake pipe drive circuit, so that the switch tube can be turned on or off normally.

[0058] Figure 4 is a hardware framework diagram of an energy storage isolation power supply according to an embodiment of the present invention, such as Figure 4 As shown, the isolated energy storage circuit includes an isolated power supply, R1, D1, D2, C3, a buck-boost DC / DC and a buck DC / DC. After the control power supply is disconnected, the isolated power supply loses input and disconnects output. At this time, the farad capacitor stores electrical energy, which is output through the diode D2. The diode D1 prevents the electrical energy of the farad capacitor from flowing back to the switching power supply. The output of the farad capacitor generates a stable 3.3V (i.e., a first predetermined value voltage) through the buck-boost DC / DC circuit (i.e., the first buck-boost circuit) to enable the MCU and the voltage sampling and conditioning circuit to work normally. The stable 15V (i.e., the second predetermined value voltage) is generated through the boost DC / DC (i.e., the second buck-boost circuit) to provide the required voltage to the brake pipe drive circuit, so that the brake pipe can be opened and closed normally.

[0059] In this embodiment, the energy storage isolation power supply is used to isolate the control part from the power supply of the power part, and at the same time ensure that the braking circuit can still work normally after the weak current is cut off.

[0060] According to the above embodiment of the present invention, the energy storage isolation power supply includes: an isolation power supply, which is used for input / output of a power supply isolated from each other; a limiting resistor, which is used to limit the maximum charging current of a farad capacitor; a low forward conduction voltage drop diode, which is connected to the limiting resistor and is used to limit the current flow direction; and a farad capacitor, which is used to store energy to power a low-power circuit.

[0061] like Figure 4As shown, the isolated power supply is used for power supply with isolated input and output. Since only the MCU, voltage sampling and conditioning circuit, and brake tube drive circuit need to be powered, a single low-power isolated power supply can meet the requirements, such as a 5VDC to 5VDC isolated power supply module, etc. R1 (i.e., limiting resistor) is a farad capacitor charging current limiting resistor, which is used to limit the maximum charging current of the farad capacitor. D1 and D2 are low forward conduction voltage drop diodes, which are used to limit the current flow and prevent current backflow. C3 is a farad capacitor with a capacity of F class. Small-volume farad capacitors generally have a very low withstand voltage and can be used to store energy to power low-power circuits.

[0062] According to the above embodiment of the present invention, the energy storage isolation power supply also includes: a first buck-boost circuit, which is connected to the MCU and the voltage sampling circuit, and when using a farad capacitor for power supply, outputs a first predetermined value voltage to provide working power for the MCU and the voltage sampling circuit; a second buck-boost circuit, which is connected to the brake tube drive circuit, and is used to provide a second predetermined value voltage to the switch tube to turn the switch tube on or off.

[0063] In this embodiment, a buck-boost DC / DC (i.e., a first buck-boost circuit) is connected to the MCU and the voltage sampling circuit. The DC / DC conversion circuit can step up and down. When a farad capacitor is used for power supply, the input voltage of the DC / DC circuit (the output voltage of the farad capacitor) will keep decreasing. The buck-boost circuit can output a stable voltage (such as 3.3V) to the MCU and voltage sampling and conditioning circuits. The boost DC / DC (i.e., the second buck-boost circuit) is connected to the brake pipe drive circuit. Since the drive voltage of the brake pipe is much higher than the power supply voltage of the MCU, a boost DC / DC is required to ensure that the brake pipe is opened and closed normally.

[0064] Table 1 is a parameter description table according to an embodiment of the present invention. Table 1 shows Figure 2 and Figure 3 Specific description of the device:

[0065] Table 1

[0066]

[0067] From the above, it can be seen that in an embodiment of the present invention, a PWM signal is generated by a controller according to the received voltage and current data, and then the power module of the motor is controlled through the module driver; the brake tube drive circuit transmits the PWM signal to the switch tube of the motor through an isolated data transceiver, thereby controlling the conduction and closing of the switch tube to achieve the start and stop control of the motor. At the same time, the energy in the motor bus is converted into heat energy dissipation through a discharge resistor to ensure the safety of the motor after stopping, so that the motor power-off shutdown control system has the characteristics of high efficiency, stability and safety, and is suitable for various motor application scenarios that require precise control and shutdown.

[0068] The method embodiments provided in the embodiments of the present invention can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking running on a mobile terminal as an example, Figure 5 1 is a hardware structure block diagram of a mobile terminal of a method for processing a motor power failure and shutdown according to an embodiment of the present invention. Figure 5 As shown, the mobile terminal may include one or more ( Figure 5 Only one is shown in the figure) a processor 502 (the processor 502 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 504 for storing data, wherein the mobile terminal may also include a transmission device 506 and an input / output device 508 for communication functions. It can be understood by those skilled in the art that Figure 5 The structure shown is for illustration only and does not limit the structure of the mobile terminal. Figure 5 More or fewer components as shown, or with Figure 5 Different configurations are shown.

[0069] The memory 504 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the processing method for power failure and shutdown of the motor in the embodiment of the present invention. The processor 502 executes various functional applications and data processing by running the computer program stored in the memory 504, that is, the above method is implemented. The memory 504 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 504 may further include a memory remotely arranged relative to the processor 502, and these remote memories can be connected to the mobile terminal via a network. Examples of the above-mentioned network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof. The transmission device 506 is used to receive or send data via a network. The above-mentioned specific examples of the network may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 506 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 506 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0070] According to an embodiment of the present invention, a method embodiment of a method for processing a motor power failure and shutdown is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0071] Figure 6 is a flow chart of a method for processing a motor power failure shutdown according to an embodiment of the present invention, such as Figure 6 As shown, the method comprises the following steps:

[0072] Step S602, in the process of the control power supply of the motor power-off shutdown control system supplying power to the isolated power supply of the motor power-off shutdown control system, the farad capacitor in the energy storage isolation power supply of the motor power-off shutdown control system is charged through the isolated power supply, and the MCU of the motor power-off shutdown control system is powered by the first buck-boost circuit in the energy storage isolation power supply, and the brake pipe drive circuit in the energy storage isolation power supply is powered by the second buck-boost circuit in the energy storage isolation power supply.

[0073] Figure 7 is a flow chart of the operation of the isolated energy storage power supply circuit according to an embodiment of the present invention. Figure 7 As shown, in the process of the system's control power supply supplying power to the isolated power supply, the farad capacitor is charged through the isolated power supply, and the subsequent boost circuit and the buck-boost circuit are powered, that is, the MCU is powered by the buck-boost circuit (that is, the first buck-boost circuit), and the S drive circuit is powered by the boost circuit (that is, the second buck-boost circuit).

[0074] In this embodiment, through the design of the charging farad capacitor and the buck-boost circuit, a stable power supply can be provided for each component of the system, thereby ensuring the reliability and stability of the system. At the same time, through the power supply of the brake pipe drive circuit, rapid braking of the motor can be achieved, ensuring the safety of the equipment, so that the motor power-off shutdown control system can still operate normally and achieve safe shutdown when the main power supply is lost.

[0075] Step S604, monitoring the control power supply to obtain a monitoring result.

[0076] In this embodiment, the control power supply can be monitored to determine whether the control power supply fails, so that the status and performance of the power supply can be understood and power supply failure or abnormality can be discovered in time.

[0077] Step S606, when the monitoring result indicates that the control power supply is disconnected, the farad capacitor is discharged to power the first buck-boost circuit and the second buck-boost circuit, wherein the first buck-boost circuit outputs a first predetermined value voltage after powering on to provide working power for the MCU and the voltage sampling circuit, and the second buck-boost circuit provides a second predetermined value voltage to the switch tube of the motor power-off shutdown control system after powering on to turn the switch tube on or off.

[0078] In this embodiment, when the control power fails, that is, when the control power is disconnected, the Farad capacitor can be discharged to supply power to the subsequent boost circuit and the buck-boost circuit to ensure the normal operation of the MCU, the voltage sampling circuit and the motor power-off and shutdown control system, thereby realizing the power-off and shutdown control of the motor.

[0079] like Figure 7 As shown, when the control power supply is not failed, the control power supply supplies power to the isolated power supply.

[0080] The embodiment is explained by taking the example that the driver is driving the electric spindle to run at a speed of 30000rpm / min. When a power failure occurs suddenly during operation, the cutting load of the spindle will cause the electric spindle to decelerate rapidly, and the generated induced electromotive force will cause the bus voltage to increase rapidly. At this time, since the control power supply is disconnected, the main control circuit loses its function, and the isolated power supply also disconnects the output. The brake circuit is switched to the farad capacitor for power supply. The output of the farad capacitor generates a stable 3.3V through the step-up and step-down DC / DC circuit to enable the MCU and the voltage sampling and conditioning circuit to work normally. The step-up DC / DC generates a stable 15V to provide the required voltage to the brake pipe drive circuit, so that the brake pipe can be opened and closed normally. The voltage sampling circuit divides the bus voltage into the AD acquisition range built into the MCU through a resistor divider. The MCU obtains the bus voltage value through calculation. If the bus voltage exceeds the set voltage threshold, the brake pipe S switch is controlled to discharge the bus. If the drop rate of the bus voltage does not meet expectations within the set time, the brake pipe opening time is further increased to accelerate the discharge until the bus voltage drops rapidly to a safe range, and then the initial duty cycle is restored until the motor stops.

[0081] In addition, if the motor and drive are operating normally, the motor is controlled to brake rapidly to increase the bus voltage. The MCU will collect and calculate the bus voltage value and send it to the main control through the isolated data transceiver. The main control will adjust the braking rate. If the bus voltage exceeds the set safety threshold, the main control will disconnect the strong power input, send instructions to the MCU to discharge energy, and output a bus overvoltage alarm.

[0082] It should be noted that the above-mentioned isolated energy storage circuit is a pure hardware circuit, which runs automatically without program control. Its functions are: to supply power to the MCU and S drive circuit, and to ensure that the MCU and S drive circuit can run for a period of time when the control power supply fails, so as to ensure that the S switch tube can complete the bus energy discharge work.

[0083] From the above, it can be seen that in an embodiment of the present invention, in the process in which the control power supply of the motor power-off shutdown control system supplies power to the isolated power supply of the motor power-off shutdown control system, the farad capacitor in the energy storage isolation power supply of the motor power-off shutdown control system is charged through the isolated power supply, and the MCU of the motor power-off shutdown control system is powered by the first buck-boost circuit in the energy storage isolation power supply, and at the same time, the brake pipe drive circuit in the energy storage isolation power supply is powered by the second buck-boost circuit in the energy storage isolation power supply; the control power supply is monitored to obtain a monitoring result; when the monitoring result indicates that the control power supply is disconnected, the farad capacitor is discharged to power the first buck-boost circuit and the second buck-boost circuit. Two buck-boost circuits are used for power supply, wherein the first buck-boost circuit outputs a first predetermined voltage after power supply to provide working power for the MCU and the voltage sampling circuit, and the second buck-boost circuit provides a second predetermined voltage for the switch tube of the motor power-off and shutdown control system after power supply to make the switch tube turn on or off, thereby achieving the purpose of using the farad capacitor to provide temporary power supply for the brake circuit when the driver is powered off. At the same time, by detecting the actual value of the bus voltage and controlling the brake tube switch, the bus voltage is controlled within a safe range, thereby achieving the technical effect of reliably protecting the motor and the driver when the strong current and weak current of the driver are disconnected, thereby improving the reliability and safety of the system.

[0084] The technical solution provided by the embodiment of the present invention solves the technical problem that in the related art, a braking circuit is generally formed by connecting a resistor and a controllable switch on the bus to quickly discharge the bus, but when the weak current is disconnected, the controllable switch cannot be controlled, which poses a great safety hazard.

[0085] The technical solution provided by the above embodiment of the present invention solves the following problems: 1) When both strong and weak currents are powered off, the motor and driver are effectively protected; 2) It covers high-end and low-end products in multiple fields and has a wide range of applications. It also has the following beneficial effects: 1) When the motor is operating normally, the brake circuit is powered by an isolated power supply, and the farad capacitor is charged at the same time; 2) When the motor stops abnormally and the weak current is disconnected, the brake circuit is powered by a farad capacitor to ensure that the bus voltage is within a safe and controllable range. The reliability of the system is improved, the bus voltage is controlled within a safe range, and the life of the driver is extended.

[0086] That is, the technical solution provided by the embodiment of the present invention comprehensively considers various factors and can temporarily supply power to the braking circuit through a farad capacitor when a power outage occurs in the driver. At the same time, the braking circuit controls the brake pipe switch by detecting the actual value of the bus voltage, thereby controlling the bus voltage within a safe range. The motor and driver can be reliably protected when both the strong and weak currents of the driver are disconnected, thereby greatly improving the reliability of the system.

[0087] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0088] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods of each embodiment of the present application.

[0089] According to an embodiment of the present invention, a motor power-off shutdown processing device for implementing the above-mentioned motor power-off shutdown processing method is also provided. Figure 8 is a schematic diagram of a processing device for power failure and shutdown of a motor according to an embodiment of the present invention. Figure 8 As shown, the device comprises: a power supply module 801, a monitoring module 803 and a discharge module 805. The device for processing the power failure and shutdown of the motor is described below.

[0090] The power supply module 801 is used to charge the farad capacitor in the energy storage isolation power supply of the motor power off and shutdown control system through the isolated power supply during the process in which the control power supply of the motor power off and shutdown control system supplies power to the isolated power supply of the motor power off and shutdown control system, and to power the MCU of the motor power off and shutdown control system through the first buck-boost circuit in the energy storage isolation power supply, and at the same time, to power the brake pipe drive circuit in the energy storage isolation power supply through the second buck-boost circuit in the energy storage isolation power supply.

[0091] The monitoring module 803 is used to monitor the control power supply and obtain monitoring results.

[0092] The discharge module 805 is used to discharge through the farad capacitor to power the first buck-boost circuit and the second buck-boost circuit when the monitoring result indicates that the control power is disconnected, wherein the first buck-boost circuit outputs a first predetermined value voltage after powering on to provide a working power supply for the MCU and the voltage sampling circuit, and the second buck-boost circuit provides a second predetermined value voltage to the switch tube of the motor power-off shutdown control system after powering on to make the switch tube turn on or off.

[0093] It should be noted here that the above-mentioned power supply module 801, monitoring module 803 and discharge module 805 correspond to steps S602 to S606 in the above-mentioned embodiment, and the three modules and the corresponding steps implement the same instances and application scenarios, but are not limited to the contents disclosed in the above-mentioned embodiment.

[0094] As can be seen from the above, in the scheme recorded in the above-mentioned embodiment of the present invention, first, the power supply module can be used to charge the farad capacitor in the energy storage isolation power supply of the motor power off and shutdown control system through the isolation power supply during the process in which the control power supply of the motor power off and shutdown control system supplies power to the isolation power supply of the motor power off and shutdown control system, and the first buck-boost circuit in the energy storage isolation power supply is used to power the MCU of the motor power off and shutdown control system, and at the same time, the second buck-boost circuit in the energy storage isolation power supply is used to power the brake pipe drive circuit in the energy storage isolation power supply; then, the monitoring module can be used to monitor the control power supply to obtain the monitoring result; finally, the discharge module can be used to charge the farad capacitor through the isolation power supply when the monitoring result indicates that the control power supply is disconnected. The capacitor is discharged to power the first buck-boost circuit and the second buck-boost circuit, wherein the first buck-boost circuit outputs a first predetermined value voltage after powering on to provide working power for the MCU and the voltage sampling circuit, and the second buck-boost circuit provides a second predetermined value voltage for the switch tube of the motor power-off and shutdown control system after powering on to make the switch tube turned on or off, thereby achieving the purpose of using the farad capacitor to provide temporary power supply for the brake circuit when the driver is powered off. At the same time, by detecting the actual value of the bus voltage and controlling the brake tube switch, the bus voltage is controlled within a safe range, thereby achieving the technical effect of reliably protecting the motor and the driver when both the strong current and the weak current of the driver are disconnected, thereby improving the reliability and safety of the system.

[0095] The technical solution provided by the embodiment of the present invention solves the technical problem that in the related art, a braking circuit is generally formed by connecting a resistor and a controllable switch on the bus to quickly discharge the bus, but when the weak current is disconnected, the controllable switch cannot be controlled, which poses a great safety hazard.

[0096] According to another aspect of an embodiment of the present invention, a processor is further provided, and the processor is used to run a program, wherein the above-mentioned processing method for power failure and shutdown of the motor is executed when the program is run.

[0097] According to another aspect of an embodiment of the present invention, a computer program product is provided, including computer instructions. When the computer instructions are executed by a processor, the above-mentioned method for processing power failure and shutdown of the motor is executed.

[0098] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein the program executes any one of the above-mentioned methods for processing power failure and shutdown of a motor.

[0099] Optionally, in this embodiment, the computer-readable storage medium may be located in any one of the computer terminals in a computer terminal group in a computer network, or in any one of the communication devices in a communication device group.

[0100] Optionally, in this embodiment, the computer-readable storage medium is configured to store program codes for executing the following steps: in the process of the control power supply of the motor power-off shutdown control system supplying power to the isolated power supply of the motor power-off shutdown control system, the farad capacitor in the energy storage isolation power supply of the motor power-off shutdown control system is charged through the isolated power supply, and the MCU of the motor power-off shutdown control system is powered by the first buck-boost circuit in the energy storage isolation power supply, and the brake tube drive circuit in the energy storage isolation power supply is powered by the second buck-boost circuit in the energy storage isolation power supply; the control power supply is monitored to obtain a monitoring result; when the monitoring result indicates that the control power supply is disconnected, the farad capacitor is discharged to power the first buck-boost circuit and the second buck-boost circuit, wherein the first buck-boost circuit outputs a first predetermined value voltage after powering on to provide a working power supply for the MCU and the voltage sampling circuit, and the second buck-boost circuit provides a second predetermined value voltage to the switch tube of the motor power-off shutdown control system after powering on to make the switch tube turn on or off.

[0101] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0102] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0103] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0104] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed over multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0105] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0106] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0107] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A motor power failure shutdown control system, characterized in that: include: A controller, connected to the module driver and the isolated data transceiver, for obtaining a pulse width modulation (PWM) signal required for driving the motor according to the received voltage data and current data, and sending the PWM signal to the module driver to control the power module of the motor, wherein the module driver is a driving circuit of the power module; A brake tube driving circuit, connected to the isolated data transceiver, used to isolate and transmit the PWM signal to the source of the switch tube of the motor through the isolated data transceiver, trigger the switch tube to turn on when the PWM signal is at a high level, and trigger the switch tube to turn off when the PWM signal is at a low level; The discharge resistor is connected in parallel with the power module and is used to convert the energy of the bus in the power module into heat energy for dissipation after the switch tube is turned on.

2. The motor power failure and shutdown control system according to claim 1, characterized in that: The controller comprises: A main control chip is connected to the microcontroller MCU of the motor, and is used to obtain the PWM signal according to the voltage data and the current data after receiving the voltage data sent by the MCU, wherein the current data is the current collected from the output of the power module; The peripheral circuit is used to make the main control chip work normally, wherein the peripheral circuit includes: a configuration resistor, a filter capacitor, a reset circuit, and an oscillation circuit.

3. The motor power failure and shutdown control system according to claim 2, characterized in that: Also includes: A controller power supply is connected to the controller and is used to provide working power for the controller.

4. The motor power-off shutdown control system according to claim 2, characterized in that: Also includes: A voltage sampling circuit is connected to the MCU and the power module, and is used to divide the bus voltage of the motor into a voltage acquisition range of the analog-to-digital conversion module built into the MCU through a voltage-dividing resistor, so as to use the MCU to calculate the bus voltage value of the motor, wherein, when the bus voltage value exceeds a voltage threshold, the switch tube is controlled to discharge the bus; when the bus voltage value does not drop to a predetermined voltage value within a preset time period, the discharge speed of the switch tube is increased until the bus voltage value drops to the predetermined voltage value.

5. The motor power-off shutdown control system according to claim 3, characterized in that: Also includes: An energy storage isolation power supply is connected to the MCU, the brake pipe drive circuit and the controller power supply, and is used to generate a first predetermined value voltage through a first buck-boost circuit for the output of the farad capacitor to enable the MCU and the voltage sampling circuit to work normally after the controller power supply of the motor is disconnected; A second predetermined voltage is generated by a second buck-boost circuit to provide a working voltage for the brake tube drive circuit, so that the switch tube is normally turned on or off.

6. The motor power-off shutdown control system according to claim 5, characterized in that: The energy storage isolation power supply comprises: Isolated power supply, used for power supply with input / output isolated from each other; A limiting resistor, used to limit the maximum charging current of the farad capacitor; A low forward conduction voltage drop diode connected to the limiting resistor to limit the current flow direction; The farad capacitor is used to store energy to power low power circuits.

7. The motor power-off shutdown control system according to claim 5, characterized in that: The energy storage isolation power supply also includes: The first buck-boost circuit is connected to the MCU and the voltage sampling circuit, and when the farad capacitor is used for power supply, outputs the first predetermined value voltage to provide working power for the MCU and the voltage sampling circuit; The second buck-boost circuit is connected to the brake tube driving circuit, and is used to provide the second predetermined value voltage to the switch tube to turn the switch tube on or off.

8. A method for processing a motor power failure and shutdown, characterized in that: The motor power-off shutdown control system applied to any one of claims 1 to 7 above comprises: In the process that the control power supply of the motor power-off shutdown control system supplies power to the isolated power supply of the motor power-off shutdown control system, the farad capacitor in the energy storage isolated power supply of the motor power-off shutdown control system is charged by the isolated power supply, and the MCU of the motor power-off shutdown control system is powered by the first buck-boost circuit in the energy storage isolated power supply, and the brake pipe drive circuit in the energy storage isolated power supply is powered by the second buck-boost circuit in the energy storage isolated power supply; Monitoring the control power supply to obtain a monitoring result; When the monitoring result indicates that the control power supply is disconnected, the farad capacitor is discharged to power the first buck-boost circuit and the second buck-boost circuit, wherein the first buck-boost circuit outputs a first predetermined voltage after powering on to provide working power for the MCU and the voltage sampling circuit, and the second buck-boost circuit provides a second predetermined voltage to the switch tube of the motor power-off shutdown control system to turn the switch tube on or off after powering on.

9. A device for processing a motor power failure and shutdown, characterized in that: The method for processing the motor power failure and shutdown as described in claim 8 above comprises: A power supply module, used for charging the farad capacitor in the energy storage isolation power supply of the motor power off and shutdown control system through the isolation power supply during the process in which the control power supply of the motor power off and shutdown control system supplies power to the isolation power supply of the motor power off and shutdown control system, and for supplying power to the MCU of the motor power off and shutdown control system through the first buck-boost circuit in the energy storage isolation power supply, and for supplying power to the brake pipe drive circuit in the energy storage isolation power supply through the second buck-boost circuit in the energy storage isolation power supply; A monitoring module, used to monitor the control power supply and obtain monitoring results; A discharge module is used to discharge the farad capacitor to power the first buck-boost circuit and the second buck-boost circuit when the monitoring result indicates that the control power supply is disconnected, wherein the first buck-boost circuit outputs a first predetermined value voltage after powering up to provide a working power supply for the MCU and the voltage sampling circuit, and the second buck-boost circuit provides a second predetermined value voltage to the switch tube of the motor power-off shutdown control system after powering up to turn the switch tube on or off.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein the program executes the method for processing power failure and shutdown of a motor as claimed in claim 8.

11. A computer program product comprising computer instructions, characterized in that: When the computer instructions are executed by the processor, the method for processing the power failure and shutdown of the motor described in claim 8 is executed.

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