Digital pressurization control method and device based on fitting algorithm

Abstract

The invention relates to a digital supercharging control method and device based on a fitting algorithm, and belongs to the field of carrier rocket gas flow monitoring. According to the digital pressurization control method based on the fitting algorithm, the gas flow adjusting efficiency and the response speed are improved through the steps of signal recording, data rationality judgment and fitting algorithm processing, the pressurization control algorithm and a two-out-of-three control mode are adopted, control decision making is conducted, and an auxiliary electromagnetic valve is controlled. As the two-out-of-three control mode is adopted in the three paths of redundant signals, two paths of most reliable signals are selected for control decision making, and the reliability of the control method is further improved. The design of double-path independent short-circuit protection, double EMI filters, double DC / DC modules, redundant power output and the like is adopted in the power supply module in the digital boost control equipment, high-reliability power supply from a primary power supply to a secondary power supply is achieved, the fault-tolerant capability of the system is improved, and the stability and reliability of the power supply module are remarkably enhanced.

Description

Technical Field

[0001] The invention belongs to the field of launch vehicle gas flow monitoring and relates to a digital boost control method and equipment based on a fitting algorithm. Background Art

[0002] In the existing boost control equipment system, the setting of control parameters often depends on the operator's experience or direct and fixed criteria. Although this approach can maintain the basic operation of the equipment to a certain extent, it has many limitations. For example, it may cause the control accuracy to fail to meet the expected high standards, the response speed to be slow, and it is difficult to adapt to various complex and changeable working conditions in a timely and effective manner. In addition, its reliability will also be questioned and challenged to a certain extent during long-term operation. In view of the above defects, it is necessary to provide a boost control device that can intelligently and dynamically adjust the control parameters according to the actual operating data to improve the efficiency of boost control, the adjustment rate of gas flow and the overall response speed of the system, and further enhance the adaptability and reliability of the equipment. Summary of the invention

[0003] In view of the fact that the setting of control parameters in existing digital boost control devices often relies on experience or direct judgment, resulting in low control accuracy, slow response speed, and difficult gas flow control, etc. The purpose of the present invention is to provide a digital boost control method and device based on a fitting algorithm.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] A digital boost control method based on a fitting algorithm comprises the following steps:

[0006] Signal acquisition: Acquire signals from three groups of redundant tank pressure sensors;

[0007] Data rationality judgment and fitting algorithm processing: judging and checking the received sensor signal; processing the sensor signal using a fitting algorithm;

[0008] Adopting a boost control algorithm and a two-out-of-three control method: inputting the processed sensor signal into the boost control algorithm and calculating the opening and closing method of the control secondary electromagnetic valve to adjust the flow of the boost gas; the two-out-of-three control method is to select two groups of signals from the three groups of tank redundant pressure signals for control decision;

[0009] Control the secondary solenoid valve: Generate a control signal based on the output of the boost control algorithm, and control the opening and closing of the secondary solenoid valve through the arrow-shaped resistor box to adjust the pressure in the tank.

[0010] Further, the method further comprises the following steps:

[0011] Pressure sensor signal forwarding: The pressure sensor signal is forwarded to a test bench, which monitors and analyzes the tank pressure in real time.

[0012] Further, the method further comprises the following steps:

[0013] Output Pulse Code Modulation (PCM) data: Before forwarding the pressure sensor signal to the test bench, the control signal, working status identification and sensor signal data are framed and combined into a larger data unit and output to the peripheral device in the form of a serial PCM data stream for data interpretation.

[0014] Further, among the three groups of tank redundant pressure signals, two groups of signals are selected for control decision making, specifically:

[0015] The control signals are divided into two groups. The first group of control signals are: K1, K2 and K3, which correspond to the output signals of the first group of sensors: sensor 1, sensor 2 and sensor 3 respectively; the second group of control signals are: K4, K5 and K6, which correspond to the output signals of the second group of sensors: sensor 4, sensor 5 and sensor 6 respectively; when the states of at least two signals in each group of control signals are the same, three identical control signals are generated in each group.

[0016] Further, the method further comprises the following steps:

[0017] The control signals: K2, K3, K4 and K5 are used to control the solenoid valve; the control signals K1 and K6 are used to trigger the telemetry system to collect data.

[0018] A digital boost control device based on a fitting algorithm, comprising:

[0019] The power module 1 is arranged at the end of the device close to the ground; the control module 2 is connected to the end of the power module 1 away from the ground; the upper cover plate 3 is arranged on the end of the device surface away from the ground; the lower cover plate 4 is arranged on the end of the device surface close to the ground; the upper cover plate 3 is provided with connectors 5 of different models and specifications; the lower cover plate 4 is provided with mounting holes 6 and shock-absorbing pads.

[0020] Furthermore, each functional module is installed in sequence on the side of the control module 2 away from the ground in a series-drawer structure with overlapping layers, and is electrically interconnected through an internal bus.

[0021] Furthermore, the power supply module 1 also outputs two redundant power supplies and is provided with the following components:

[0022] Two independent short-circuit protection circuits monitor and respond to short-circuit conditions at the power supply output;

[0023] Two independent electromagnetic interference filters (EMI) act on the two power supply signals respectively to isolate and filter out potential interference signals;

[0024] Two independent DC / DC converters convert the DC voltage of the primary power supply into a corresponding voltage level for use by the secondary power supply; when one of the DC / DC converters fails, the other DC / DC converter continues to provide power output.

[0025] Further, the control module 2 is composed of a field programmable gate array (FPGA) control chip, a memory and an interface;

[0026] When the power module 1 supplies power, the control chip in the control module 2 starts and runs its internal program, reads the bit rate information from the memory, and performs frequency configuration on the direct digital synthesizer (DDS) device to generate a signal of a required frequency;

[0027] After completing the frequency configuration of the DDS device, the control chip reads other configuration information from the memory and initializes the configuration of each working register; the other configuration information includes: code pattern control information, digital quantity working mode switching information and source information of the PCM signal;

[0028] After completing the initialization configuration, the control chip enters a periodic working state, regularly reads frame format information from the memory, starts the digital quantity acquisition process, stores the acquired digital signal in the internal buffer of the control chip, and outputs it to an external device.

[0029] The beneficial effects of the present invention are:

[0030] The digital boost control method based on the fitting algorithm improves the gas flow regulation efficiency and response speed. Since the three-out-of-two control method is adopted, two of the most reliable signals are selected from the three redundant signals to make control decisions, which further improves the reliability of the control method. The power module in the proposed digital boost control device adopts dual-channel independent short-circuit protection, dual EMI filters, dual DC / DC modules and redundant power output designs to achieve high-reliability power supply from primary power supply to secondary power supply, which not only improves the fault tolerance of the system, but also significantly enhances the stability and reliability of the power module. The digital boost control device is convenient to improve the gas flow regulation efficiency and response speed; it adopts the field-programmable gate array (Field-Programmable GateArray, FPGA) control chip for control, with high control accuracy, fast response speed, stable and reliable data, and easy detection and transmission; it adopts standardized, modular and universal design, and the function is configurable and flexible and convenient.

[0031] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be achieved through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0033] Figure 1 This is a structural diagram of a digital boost control device based on a fitting algorithm according to an embodiment of the present invention;

[0034] Figure 2 A three-dimensional diagram of a digital boost control device based on a fitting algorithm according to an embodiment of the present invention;

[0035] Figure 3 A hardware schematic diagram of a digital boost control device based on a fitting algorithm according to an embodiment of the present invention;

[0036] Figure 4 A software algorithm implementation diagram of a digital boost control device based on a fitting algorithm according to an embodiment of the present invention;

[0037] Figure numerals: 1-power module, 2-control module, 3-upper cover, 4-lower cover, 5-connector, 6-mounting hole. DETAILED DESCRIPTION

[0038] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0039] Among them, the drawings are only used for illustrative explanations, and they only represent drawings rather than actual drawings, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0040] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0041] See also Figure 1 , is an architecture diagram of a digital boost control device based on a fitting algorithm according to an embodiment of the present invention; the digital boost control device based on a fitting algorithm (hereinafter referred to as the "device") is mainly composed of a power module and a control module; the power module adopts a 28V DC power supply and adopts a floating ground design to ensure electromagnetic compatibility. The device has the following functions:

[0042] 1. Use peripheral power distribution equipment to provide power, receive and detect parameters from various sensors, and forward control instructions from the above sensors;

[0043] 2. Summarize and optimize the parameter information, status information and control instructions of different sensors.

[0044] 3. The data after aggregation and fitting optimization processing is transmitted to the peripheral receiving device through a specific interface device (such as a communication module, a data bus, etc.) to realize communication with the external device.

[0045] 4. Real-time monitoring of the working status of each sensor (such as checking whether the sensors are operating normally and whether they are providing accurate data). By monitoring these parameters, the equipment can detect and solve potential problems in a timely manner, thereby ensuring the stability and reliability of the system.

[0046] The control module in the device is responsible for receiving and processing the signals from the three sets of redundant pressure sensors of the tanks, and controlling the opening and closing of the secondary solenoid valve according to the processing results, thereby adjusting the flow of the pressurized gas and maintaining the tank pressure within the ideal range. At the same time, the device can also forward the pressure sensor signal to the test bench and output the control signal, working status identification and sensor signal data in the form of pulse code modulation (PCM) data stream. The specific working process of the device is as follows:

[0047] 1. Signal acquisition

[0048] First, the signals of three sets of redundant tank pressure sensors are recorded. These sensors are used to monitor the pressure in the tank and convert the pressure information into electrical signal output. "Three sets of redundant tank pressure sensors" means that the redundant tank pressure sensor signals received by the equipment come from three independent sensor systems, which can improve the reliability and accuracy of the system. If one set of sensors fails, the other two sets can still work normally.

[0049] 2. Data rationality judgment and fitting algorithm processing

[0050] After receiving the sensor signal, the device will perform data rationality judgment, that is, check whether the signal is within a reasonable range, whether there are any abnormal values, etc. Next, the device will apply a fitting algorithm to process the signal, estimate the value of the unknown data point based on the known data points, so as to smooth the sensor signal, reduce noise, and improve the accuracy of the signal.

[0051] 3. Boost control algorithm and three-out-of-two control method

[0052] The processed signal is input into the boost control algorithm, which calculates how to control the opening and closing of the secondary solenoid valve according to the input signal to adjust the flow of the boost gas. The "two out of three control method" means that among the three redundant signals, the device will select two signals (usually the two most reliable signals) to make control decisions. This can further improve the reliability of the system.

[0053] 4. Control the secondary solenoid valve

[0054] According to the output of the boost control algorithm, the device generates a control signal to control the opening and closing of the secondary solenoid valve through the arrow resistor box (the arrow resistor box is a resistor assembly specially designed for spacecraft, such as launch vehicles. It is usually composed of multiple fixed resistors connected in a certain way to adjust the resistance value in the circuit, thereby achieving precise control of current and voltage). The opening and closing state of the solenoid valve determines the flow rate of the boost gas, thereby adjusting the pressure in the tank.

[0055] 5. Pressure sensor signal forwarding and PCM data stream output

[0056] 1. The device will also forward the pressure sensor signal to the test bench to facilitate the test bench to monitor and analyze the tank pressure in real time. Before forwarding the signal, the device will perform comprehensive framing of the control signal, working status identification and sensor signal data, combining multiple data units into a larger data unit for data transmission and processing. Finally, the device outputs this data in the form of a serial PCM data stream to the peripheral device for data interpretation. PCM is a commonly used digital signal processing technology that can convert analog signals into digital signals for transmission and processing.

[0057] The digital boost control device proposed in this implementation is a highly integrated system that uses redundant sensors, data rationality judgment, fitting algorithms, boost control algorithms, and three-out-of-two control methods to achieve precise control of tank pressure. At the same time, the device can also forward the pressure sensor signal to the test bench and output relevant data in the form of PCM data stream, which facilitates system monitoring and analysis.

[0058] See also Figure 2 , which is a three-dimensional diagram of a digital boost control device based on a fitting algorithm according to an embodiment of the present invention; the power module 1 is installed at the bottom of the device, and the control module 2 is installed on the side of the power module 1 away from the ground; the functional modules are in a drawer-type structure with overlapping layers, and are installed in sequence on the side of the control module 2 away from the ground, and are electrically interconnected through an internal bus. The device also has an upper cover 3 and a lower cover 4, and identification information such as the factory time, number, code, etc. can be marked on the upper cover to facilitate device identification and installation. In addition, the device is also provided with 4 connectors 5, and the model specifications of each connector are inconsistent, which can effectively prevent the risk of wrong connection of the connector. Furthermore, there are 4 mounting holes 6 on the lower cover 4 of the device, which are equipped with shock-absorbing pads to ensure effective contact and effective shock absorption of the equipment.

[0059] See also Figure 3, is a hardware schematic diagram of a digital boost control device based on a fitting algorithm according to an embodiment of the present invention; the device is mainly composed of a power module and a control module; the power module 1 adopts a redundant design concept, and enhances the fault tolerance of the system by adding backup components, realizing a high-reliability power supply design from the primary power supply to the secondary power supply, and providing power supply voltage for the entire boost control device. Specifically, the following components are embedded in the module:

[0060] 1. Dual independent short-circuit protection circuit

[0061] The two circuits operate independently to monitor and respond to short circuits at the power supply output. Once a short circuit is detected, the corresponding protection circuit will immediately start to cut off the fault path and prevent damage from spreading. Importantly, the failure of one circuit will not affect the normal operation of the other circuit, thus ensuring the continued effectiveness of the short circuit protection function.

[0062] 2. Two independent electromagnetic interference filters (EMI) for suppressing electromagnetic interference

[0063] In order to eliminate electromagnetic interference, the power module 1 is equipped with two independent EMI filters, which act on the two power signals respectively, effectively isolating and filtering out potential interference signals to prevent them from interfering with each other or affecting external devices. This design not only improves the electromagnetic compatibility of the power module, but also enhances the overall stability of the system.

[0064] 3. Dual DC / DC module design

[0065] Two independent DC / DC converters are integrated to convert the DC voltage of the primary power supply into different voltage levels suitable for the secondary power supply. Each DC / DC module has complete conversion and regulation functions and works independently of each other. This design ensures that even if one DC / DC module fails, the other can continue to provide stable power output to ensure the continuity of power supply.

[0066] 4. Redundant power output

[0067] Based on the above dual DC / DC module design, the power module 1 can output two redundant power supplies. The two power supplies are completely isolated electrically and have the same power supply capacity. When one of the power supplies fails to supply power due to a fault, the other power supply will immediately take over the load to ensure that the normal operation of the system is not affected.

[0068] Therefore, the power module 1 realizes high-reliability power supply from primary power supply to secondary power supply by adopting designs such as dual-circuit independent short-circuit protection, dual EMI filters, dual DC / DC modules, and redundant power output. This redundant design not only improves the fault tolerance of the system, but also significantly enhances the stability and reliability of the power module.

[0069] The control module 2 is mainly composed of a field-programmable gate array (FPGA) control chip, memory, and various interfaces. The hardware operation of the device is a highly automated process involving multiple links such as reading, configuring, collecting, and outputting the control chip. Through this process, the device can generate and output signals of specific frequencies and formats as needed, as follows:

[0070] 1. Equipment power-on and initialization

[0071] Device power-on: When the device is powered on, the power supply starts to supply power to various components within the device, including control chips, memory, direct digital synthesizer (DDS) devices, etc.

[0072] Control chip starts: With the supply of power, the control chip starts to start and run its internal program.

[0073] Reading bit rate information: The control chip will first read the bit rate information from the memory. This information is usually stored in digital form, representing the frequency of the signal that the DDS device needs to generate, and determines the frequency characteristics of the signal output by the DDS.

[0074] DDS device frequency configuration: Based on the read bit rate information, the control chip will configure the frequency of the DDS device to generate a signal of the required frequency.

[0075] 2. Read configuration information and initialize working registers

[0076] Read configuration information: After completing the frequency configuration of the DDS device, the control chip will continue to read other configuration information from the memory, including:

[0077] Pattern control: specifies the waveform type (such as sine wave, square wave, triangle wave, etc.) output by the DDS device.

[0078] Digital quantity working mode switching information: indicates the working mode that the control chip needs to switch during the digital quantity acquisition and output process.

[0079] PCM source selection: Specify the source of the PCM signal.

[0080] Initialize working registers: Based on the read configuration information, the control chip will initialize the configuration of each working register.

[0081] 3. Periodically read frame format information and output data

[0082] Periodically read frame format information: After completing the initialization configuration, the control chip will enter a periodic working state and periodically read the frame format information from the memory. The frame format information defines the organization of the data, including the length, format, and sequence of the data.

[0083] Control starts digital quantity acquisition: According to the read frame format information, the control chip will start the digital quantity acquisition process.

[0084] Output the collected data: The collected digital signals will be stored in the internal buffer of the control chip and output to the external device or system as needed.

[0085] In this embodiment, the control signals are divided into two groups, each group contains three identical signals. These signals come from two groups of sensors and are processed by the judgment of the three-out-of-two control method. The processed signals are used to control the solenoid valve and perform telemetry collection.

[0086] Specifically:

[0087] 1. Control signal grouping and source

[0088] The first group of control signals (K1, K2, K3) correspond to the output signals of the first group of sensors (sensor 1, sensor 2, sensor 3). The output signals of these sensors are processed by the judgment of the three-out-of-two control method to generate three identical control signals K1, K2, and K3. The three-out-of-two control method means that the corresponding control signal will be triggered only when at least two of the output signals of the three sensors are in the same state, which improves the reliability and fault tolerance of the system.

[0089] The second group of control signals (K4, K5, K6) correspond to the output signals of the second group of sensors (sensor 4, sensor 5, sensor 6). The output signals of these sensors are also processed by the three-out-of-two control method to generate three identical control signals K4, K5, and K6.

[0090] 2. Control signal processing

[0091] Control solenoid valve:

[0092] The four control signals K2, K3, K4 and K5 are used to control the solenoid valve, improving the reliability and safety of the system.

[0093] Telemetry Collection:

[0094] The two control signals K1 and K6 are used for telemetry acquisition (the process of remotely measuring and collecting data) to trigger the telemetry system to collect data.

[0095] Since the control chip needs to be powered by 3.3V voltage and the relay needs to be driven by 5V complementary metal oxide semiconductor (CMOS) level, the signal must be filtered, pulled up or pulled down after level driving to avoid incorrect instantaneous voltage output at the moment of power-on. In order to improve the reliability of the device, this embodiment adopts a multi-area data storage strategy and adopts a three-out-of-two control method to ensure the accuracy of any two sensor data; in addition, according to the protocol, after evaluating the data validity, data fitting optimization is performed every 200 milliseconds.

[0096] See also Figure 4 , is a software algorithm implementation diagram of a digital boost control device based on a fitting algorithm according to an embodiment of the present invention; this embodiment is explained by taking the data processing of 6-way sensors as an example. Since the pressure data output by the 6-way sensors are completely consistent in the receiving, protocol parsing and caching links, after the timing cycle arrives, the time-sharing fitting calculation is performed according to the actual collected data. The calculation results and the original data are then stored in a random access memory (RAM) for subsequent use. Then, the data is packaged according to the specifications of the telemetry data transmission frame and transmitted to the peripheral control device. In addition, the fitting results are evaluated in combination with the threshold to determine whether the current channel has been boosted, and the on-off control signal of the solenoid valve is output in a three-out-of-two control mode. By applying software fitting algorithms (such as the least squares method), the reliability and stability of the software system are effectively enhanced.

[0097] The present invention proposes a digital boost control device based on a fitting algorithm, which uses a control chip such as an FPGA to achieve precise control. It is characterized by high control accuracy, fast response time, data stability and reliability, and is convenient for detection and data transmission. The device effectively solves the problems of insufficient control accuracy, slow response speed, and difficult gas flow control in traditional control technologies, and significantly improves the efficiency and response speed of gas flow regulation.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A digital boost control method based on a fitting algorithm, characterized in that: The following steps are involved: Signal acquisition: Acquire signals from three groups of redundant tank pressure sensors; Data rationality judgment and fitting algorithm processing: judging and checking the received sensor signal; processing the sensor signal using a fitting algorithm; Adopting a boost control algorithm and a two-out-of-three control method: inputting the processed sensor signal into the boost control algorithm and calculating the opening and closing method of the control secondary electromagnetic valve to adjust the flow of the boost gas; the two-out-of-three control method is to select two groups of signals from the three groups of tank redundant pressure signals for control decision; Control the secondary solenoid valve: Generate a control signal based on the output of the boost control algorithm, and control the opening and closing of the secondary solenoid valve through the arrow-shaped resistor box to adjust the pressure in the tank.

2. The digital boost control method based on fitting algorithm according to claim 1, characterized in that: The following steps are also included: Pressure sensor signal forwarding: The pressure sensor signal is forwarded to a test bench, which monitors and analyzes the tank pressure in real time.

3. The digital boost control method based on fitting algorithm according to claim 2 is characterized in that: The following steps are also included: Output Pulse Code Modulation (PCM) data: Before forwarding the pressure sensor signal to the test bench, the control signal, working status identification and sensor signal data are framed and combined into a larger data unit and output to the peripheral device in the form of a serial PCM data stream for data interpretation.

4. The digital boost control method based on the fitting algorithm according to claim 1, characterized in that: Among the three groups of tank redundant pressure signals, two groups of signals are selected for control decision making, specifically: The control signals are divided into two groups. The first group of control signals are: K1, K2 and K3, which correspond to the output signals of the first group of sensors: sensor 1, sensor 2 and sensor 3 respectively; the second group of control signals are: K4, K5 and K6, which correspond to the output signals of the second group of sensors: sensor 4, sensor 5 and sensor 6 respectively; when the states of at least two signals in each group of control signals are the same, three identical control signals are generated in each group.

5. According to claim 4, a digital boost control method based on a fitting algorithm is characterized in that: The following steps are also included: The control signals: K2, K3, K4 and K5 are used to control the solenoid valve; the control signals K1 and K6 are used to trigger the telemetry system to collect data.

6. A digital boost control device based on a fitting algorithm, characterized in that: include: A power module (1) is arranged at one end of the device close to the ground; a control module (2) is connected to one end of the power module (1) away from the ground; an upper cover (3) is arranged at one end of the device surface away from the ground; a lower cover (4) is arranged at one end of the device surface close to the ground; connectors (5) of different models and specifications are arranged on the upper cover (3); and mounting holes (6) and shock-absorbing pads are arranged on the lower cover (4).

7. The digital boost control device based on the fitting algorithm according to claim 6, characterized in that: Each functional module has a drawer-type structure with overlapping layers, and is installed in sequence on the side of the control module (2) away from the ground, and is electrically interconnected through an internal bus.

8. The digital boost control device based on fitting algorithm according to claim 6, characterized in that: The power supply module (1) also outputs two redundant power supplies and is provided with the following components: Two independent short-circuit protection circuits monitor and respond to short-circuit conditions at the power supply output; Two independent electromagnetic interference filters (EMI) act on the two power supply signals respectively to isolate and filter out potential interference signals; Two independent DC / DC converters convert the DC voltage of the primary power supply into a corresponding voltage level for use by the secondary power supply; when one of the DC / DC converters fails, the other DC / DC converter continues to provide power output.

9. The digital boost control device based on fitting algorithm according to claim 6, characterized in that: The control module (2) is composed of a field programmable gate array (FPGA) control chip, a memory and an interface; When the power module (1) supplies power, the control chip in the control module (2) starts and runs its internal program, reads code rate information from a memory, and performs frequency configuration on a direct digital synthesizer (DDS) device to generate a signal of a required frequency; After completing the frequency configuration of the DDS device, the control chip reads other configuration information from the memory and initializes the configuration of each working register; The other configuration information includes: code type control information, digital quantity working mode switching information and PCM signal source information; After completing the initialization configuration, the control chip enters a periodic working state, regularly reads frame format information from the memory, starts the digital quantity acquisition process, stores the acquired digital signal in the internal buffer of the control chip, and outputs it to an external device.

Images