Dual-redundancy integrated trim driver architecture

Abstract

The utility model belongs to the field of flight control, and particularly relates to a dual-redundancy integrated trim driver architecture. The architecture mainly comprises a signal acquisition unit which is connected with a control panel and is used for acquiring a balancing instruction given by the control panel; the main control unit is connected with the control panel, receives a balancing instruction given by the control panel, and obtains a current signal for driving the motor to rotate based on each balancing circuit; the standby control unit is connected with the control panel, receives a balancing instruction given by the control panel, and obtains a backup current signal for driving the motor to rotate based on each backup balancing circuit; the driving unit is connected with the main control unit and the standby control unit and is used for driving the motor to rotate according to the current signal or the standby current signal; and the power supply processing unit is connected with an onboard power supply and is used for supplying power to the signal acquisition unit, the main control unit, the standby control unit and the driving unit. The control driving functions of a plurality of balancing channels are integrated together, the weight can be saved, and the task reliability of the balancing mechanism is improved through the redundancy design.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of flight control, and particularly relates to a dual-redundancy integrated trim driver architecture. BACKGROUND

[0002] In order to reduce the burden of the pilot, most of the aircraft are provided with trim mechanisms, mainly including longitudinal trim, lateral trim and heading trim. The trim mechanism is driven by a brushless DC motor to replace the direct manipulation of the pilot. In the current common aircraft scheme, the three trim channels are provided with independent drivers and trim mechanisms, which requires a large weight cost, and the independent driver is usually simple in architecture and without redundancy design, resulting in low task reliability of the trim mechanism. In view of these problems, it is necessary to design an integrated driver to unify the control of each trim mechanism, so as to improve the safety and task reliability of the aircraft. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the above problems, the present application provides a dual-redundancy integrated trim driver architecture, mainly comprising:

[0004] A signal acquisition unit connected to the control board is used to acquire the trim command given by the control board, and the trim command includes longitudinal trim command, lateral trim command and heading trim command;

[0005] A main control unit connected to the control board receives the trim command given by the control board, and obtains a current signal for driving the motor to rotate based on each trim circuit, and the current signal includes longitudinal trim current, lateral trim current and heading trim current;

[0006] A backup control unit connected to the control board receives the trim command given by the control board, and obtains a backup current signal for driving the motor to rotate based on each backup trim circuit, and the backup current signal includes backup longitudinal trim current, backup lateral trim current and backup heading trim current;

[0007] A driving unit connected to the main control unit and the backup control unit is used to drive the motor to rotate according to the current signal or the backup current signal, and the motor includes longitudinal trim motor, backup lateral trim motor and backup heading trim motor;

[0008] A power supply processing unit connected to the on-board power supply is used to supply power to the signal acquisition unit, the main control unit, the backup control unit and the driving unit.

[0009] Preferably, the main control unit and the controlled unit are connected to transmit the normal or fault state of each other.

[0010] Preferably, the main control unit and the controlled unit are connected to transmit the normal or fault state of each other.

[0011] Preferably, the master control unit is connected with the slave control unit through a bus.

[0012] Preferably, the power supply processing unit comprises:

[0013] a voltage stabilizing circuit, an input end of which is connected with the on-board power supply, and an output end of which is connected with the secondary power supply circuit, the voltage stabilizing circuit being used for stabilizing the voltage of the on-board power supply;

[0014] a secondary power supply circuit, an input end of which is connected with the voltage stabilizing circuit, and an output end of which is connected with the signal processing unit, the secondary power supply circuit being used for converting the on-board power supply into a direct current output.

[0015] The application integrates the control and drive functions of multiple trim channels together, can save weight, improves the mission reliability of the trim mechanism through redundancy design, and further improves the safety and mission reliability of the aircraft. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a system architecture diagram of a preferred embodiment of the dual-redundancy integrated trim driver architecture of the application. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the application clearer, the technical scheme of the embodiments of the application will be described in more detail below with reference to the drawings of the embodiments of the application. In the drawings, the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The described embodiments are part of the embodiments of the application, not all of the embodiments of the application. The embodiments described below by reference to the drawings are exemplary and are intended to explain the application, and cannot be understood as a limitation of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application. The embodiments of the application will be described in detail below with reference to the drawings.

[0018] The application provides a dual-redundancy integrated trim driver architecture, as shown in Figure 1 mainly comprising:

[0019] a signal acquisition unit connected with the control board, used for acquiring the trim instructions given by the control board, the trim instructions including longitudinal trim instructions, lateral trim instructions and heading trim instructions;

[0020] a master control unit connected with the control board, receiving the trim instructions given by the control board, and obtaining current signals for driving the motor to rotate based on each trim circuit, the current signals including longitudinal trim current, lateral trim current and heading trim current;

[0021] The backup control unit is connected to the control panel and receives the balancing instruction given by the control panel, and obtains the backup current signal for driving the motor to rotate based on the backup balancing circuit, wherein the backup current signal includes a backup longitudinal balancing current, a backup transverse balancing current and a backup heading balancing current.

[0022] The drive unit is connected to the main control unit and the backup control unit, and is used to drive the motor to rotate according to the current signal or the backup current signal, wherein the motor includes a longitudinal balancing motor, a backup transverse balancing motor and a backup heading balancing motor.

[0023] The power processing unit is connected to the on-board power supply, and is used to supply power to the signal acquisition unit, the main control unit, the backup control unit and the drive unit.

[0024] The application first acquires the balancing instructions of each channel given by the control panel, and transmits the balancing instructions of each channel to the main control unit, and the main control unit uses the existing balancing logic processing circuit to solve the balancing instructions to obtain the current signal. At the same time, the acquired balancing instructions of each channel are transmitted to the backup control unit, and the backup control unit uses the existing balancing logic processing circuit to solve the balancing instructions to obtain the backup current signal. The main control unit and the backup control unit are both output to the drive unit, and the drive unit uses the balancing current signal solved by the main control unit by default, and uses the backup current signal solved by the backup control unit when the main control unit fails.

[0025] The signal acquisition unit of the application includes a discrete quantity acquisition circuit and an LVDT demodulation circuit. The discrete quantity acquisition circuit processes the instructions of the balancing control panel through the discrete quantity chip, and then accesses the main control unit and the backup control unit in the form of a bus. After being logically processed by the existing logic processing chip, the instructions are sent to the DSP. The main control unit and the backup control unit mainly complete the processing of all on-off quantity signals, and then transmit the signals to the drive unit. The drive unit includes a longitudinal balancing drive circuit, a transverse balancing drive circuit and a heading balancing drive circuit. Each drive circuit of each channel includes a current detection circuit, a Hall detection circuit, a clutch detection circuit, a clutch control circuit and a motor drive circuit.

[0026] In some optional embodiments, the main control unit and the backup control unit are connected to transmit the normal or fault state of each other, and this embodiment is used to realize the inter-board communication between the main control unit and the backup control unit.

[0027] In some optional embodiments, the main control unit and the backup control unit perform signal isolation on the calculated current signal and the backup current signal through an isolation circuit.

[0028] In some optional embodiments, the main control unit and the backup control unit are connected to the host computer through a bus. This embodiment is used to realize the control, state monitoring and fault reporting of all balancing mechanisms.

[0029] In some optional embodiments, the power processing unit comprises:

[0030] A voltage stabilizing circuit is connected to the onboard power supply at the input end and to the secondary power supply circuit at the output end, and is used to stabilize the voltage of the onboard power supply to reduce the influence of fluctuations in the input onboard power supply on the driver;

[0031] The secondary power supply circuit is connected to the voltage stabilizing circuit at the input end and to the signal processing unit at the output end, and is used to convert the onboard power supply into the DC output required by the controller.

[0032] The application is mainly applied to an aerial vehicle, adopts integrated design, and controls the longitudinal, lateral and heading trim of the aircraft through one driver, thereby saving weight and effectively improving the task reliability of the trim mechanism by virtue of the dual-redundancy design.

[0033] The above merely describes the specific embodiments of the application, but the protection scope of the application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the application, which shall be covered within the protection scope of the application. Therefore, the protection scope of the application shall be subject to the protection scope of the claims.

Claims

1. A dual-redundant integrated trim driver architecture, characterized in that, include: The signal acquisition unit is connected to the control board and is used to acquire the trim commands given by the control board. The trim commands include longitudinal trim commands, lateral trim commands and heading trim commands. The main control unit is connected to the control board, receives the trim command given by the control board, and obtains the current signal for driving the motor to rotate based on each trim circuit. The current signal includes longitudinal trim current, lateral trim current and heading trim current. The backup control unit is connected to the control board, receives the trim command given by the control board, and obtains the backup current signal for driving the motor rotation based on the backup trim circuits. The backup current signal includes backup longitudinal trim current, backup lateral trim current and backup heading trim current. A drive unit, connecting the main control unit and the backup control unit, is used to drive the motor to rotate according to the current signal or the backup current signal. The motor includes a longitudinal trim motor, a backup lateral trim motor and a backup yaw trim motor. The power supply unit is connected to the on-board power supply and is used to supply power to the signal acquisition unit, main control unit, backup control unit and drive unit.

2. The dual-redundant integrated trim driver architecture as described in claim 1, characterized in that, The main control unit is connected to the backup control unit to transmit their respective normal or fault status.

3. The dual-redundant integrated trimming driver architecture as described in claim 2, characterized in that, The main control unit and the backup control unit are isolated from each other by an isolation circuit.

4. The dual-redundant integrated trim driver architecture as described in claim 1, characterized in that, The main control unit and the backup control unit are connected to the host computer via a bus.

5. The dual-redundant integrated trim driver architecture as described in claim 1, characterized in that, The power processing unit includes: A voltage regulator circuit has its input terminal connected to the machine's power supply and its output terminal connected to a secondary power supply circuit. The voltage regulator circuit is used to stabilize the voltage of the machine's power supply. The secondary power supply circuit has a voltage regulator circuit connected to its input terminal and a signal processing unit connected to its output terminal, which is used to convert the machine's power supply into DC output.

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