阅读说明：本技术 一种冲压涡轮控制系统 (Stamping turbine control system ) 是由 邢晓斌 翟东 杨美萍 时洪宇 陈跃霞 庞旭辉 党彦明 高荣军 田会平 张党峰 于 2021-05-14 设计创作，主要内容包括：本发明属于航空技术领域,涉及一种冲压涡轮控制系统。本发明主要包括圆形连接器、RAT控制器、防雷板组件、连接底板组件、控制板组件、电源及功率驱动板组件。RAT控制器通过感受飞机速度和液压系统内的压力,向展开电磁铁,卸荷阀,电磁阀等执行部件发出控制指令,放出或收起RAT；根据来自飞机的指令,对信号灯工作状态进行控制,给驾驶舱提供工作指示信号,给飞参提供转速信号。本发明提供了一种功能齐全、结构简单、操作简便,且互换性较好的冲压涡轮控制装置。(The invention belongs to the technical field of aviation, and relates to a control system of a stamping turbine. The invention mainly comprises a circular connector, an RAT controller, a lightning protection plate component, a connecting bottom plate component, a control plate component, a power supply and a power driving plate component. The RAT controller sends control instructions to executing components such as an unfolding electromagnet, an unloading valve, an electromagnetic valve and the like by sensing the speed of the airplane and the pressure in a hydraulic system, and releases or retracts the RAT; and controlling the working state of the signal lamp according to an instruction from the airplane, providing a working indication signal for the cockpit, and providing a rotating speed signal for the flight parameters. The invention provides the stamping turbine control device which is complete in function, simple in structure, simple and convenient to operate and good in interchangeability.)

1. A ram turbine control system, characterized by: the system comprises a controller, an electromagnet, a stamping turbine and a hydraulic pump, wherein the signal output end of the controller is connected with the control signal input end of the electromagnet, and the first signal input end of the controller receives an atmospheric airspeed signal and pressure signals of three sets of main hydraulic systems; the stamping turbine is connected with the hydraulic pump and is used for driving the hydraulic pump to supply pressure to the flight control hydraulic system; and the controller is used for electrifying the electromagnet to release the stamping turbine when detecting that low-pressure warning signals appear in all the three sets of main hydraulic systems and the airspeed of the airplane reaches 185 km/h.

2. The ram turbine control system of claim 1, wherein: the system further comprises a manual switch, a signal output end of the manual switch is connected with a second signal input end of the controller, the manual switch is used for sending a stamping turbine release signal to the controller, and the controller is further used for controlling the electromagnet to be electrified to release the stamping turbine after detecting the release signal sent by the manual switch.

3. The ram turbine control system of claim 1, wherein: the control signal output end of the controller is also connected with the control signal input end of a hydraulic pump unloading valve, and the hydraulic pump unloading valve is connected with a hydraulic pump of the stamping turbine; the controller is also used for releasing the stamping turbine and opening the hydraulic pump unloading valve to release pressure for the hydraulic pump of the stamping turbine.

4. The ram turbine control system of claim 3, wherein: the stamping turbine is provided with a rotating speed sensor for detecting the rotating speed of the stamping turbine, the signal output end of the rotating speed sensor is connected with the rotating speed signal input end of the controller, the controller is further used for closing the unloading valve of the hydraulic pump after the rotating speed of the stamping turbine reaches 4500r/m, and the hydraulic pump starts to supply pressure for the flight control hydraulic system.

5. The ram turbine control system of claim 1, wherein: and the controller is used for powering off the electromagnet after the electromagnet is electrified for 10 seconds.

6. The ram turbine control system of claim 1, wherein: the system further comprises an electromagnetic valve and a hydraulic actuating cylinder, a signal output end of the controller is connected with a signal input end of the electromagnetic valve, and the electromagnetic valve is used for controlling the hydraulic actuating cylinder to retract the stamping turbine after receiving a retraction signal of the controller.

7. The ram turbine control system of claim 1, wherein: the system further includes a ground switch, the ground switch comprising: a maintenance switch and a retraction switch;

the signal output ends of the maintenance switch and the recovery switch are connected with a third signal input end of the controller;

the maintenance switch is used for switching on the electromagnet through the controller to release the stamping turbine during ground maintenance; the withdrawing switch is used for withdrawing the stamping turbine by connecting the electromagnetic valve through the controller after ground maintenance is finished.

8. The ram turbine control system of claim 7, wherein: and when ground maintenance is carried out, the controller controls the unloading valve of the hydraulic pump to be closed after receiving the maintenance switch signal.

Technical Field

The invention belongs to the technical field of aviation, and particularly relates to a control system for a stamping turbine.

Background

In the airworthiness standard of 25.671 control system in 25 part of China civil aviation regulations (CCAR-25-R4) transport-type aircraft airworthiness standard, item (d) requires that the aircraft must be designed to be still operable under the condition that all engines are failed, and for a certain type, the emergency state is that under the condition that four engines are stopped, a flight control hydraulic system must meet the aircraft control requirement. The addition of a ram turbine (RAT) to the aircraft hydraulic system allows for all engine shutdowns, providing sufficient hydraulic power to the aircraft to ensure that the aircraft is controllable.

Disclosure of Invention

The invention provides the stamping turbine control system which has complete functions, simple structure, simple and convenient operation and better interchangeability without depending on an electromechanical management computer.

A control system of a stamping turbine comprises a controller, an electromagnet, the stamping turbine and a hydraulic pump, wherein a signal output end of the controller is connected with a control signal input end of the electromagnet, and a first signal input end of the controller receives an atmospheric airspeed signal and three sets of pressure signals of a main hydraulic system; the stamping turbine is connected with the hydraulic pump and is used for driving the hydraulic pump to supply pressure to the flight control hydraulic system; and the controller is used for electrifying the electromagnet to release the stamping turbine when detecting that low-pressure warning signals appear in all the three sets of main hydraulic systems and the airspeed of the airplane reaches 185 km/h.

Further, the system also comprises a manual switch, a signal output end of the manual switch is connected with a second signal input end of the controller, the manual switch is used for sending a stamping turbine release signal to the controller, and the controller is also used for controlling the electromagnet to be electrified to release the stamping turbine after detecting the release signal sent by the manual switch.

Further, the manual switch further includes a left switch and a right switch for left and right driver manipulation, respectively; the left switch has a higher priority than the right switch.

Furthermore, a control signal output end of the controller is also connected with a control signal input end of a hydraulic pump unloading valve, and the hydraulic pump unloading valve is connected with a hydraulic pump of the stamping turbine; the controller is also used for releasing the stamping turbine and opening the hydraulic pump unloading valve to release pressure for the hydraulic pump of the stamping turbine.

Furthermore, the stamping turbine is provided with a rotating speed sensor for detecting the rotating speed of the stamping turbine, the signal output end of the rotating speed sensor is connected with the rotating speed signal input end of the controller, the controller is further used for closing the unloading valve of the hydraulic pump after the rotating speed of the stamping turbine reaches 4500r/m, and the hydraulic pump starts to supply pressure for the flight control hydraulic system.

Further, the controller is used for powering off the electromagnet after the electromagnet is electrified for 10 seconds.

The system further comprises an electromagnetic valve and a hydraulic actuator cylinder, the signal output end of the controller is connected with the signal input end of the electromagnetic valve, and the electromagnetic valve is used for controlling the hydraulic actuator cylinder to retract the stamping turbine after receiving a retraction signal of the controller.

Further, the system further includes a ground switch, the ground switch including: a maintenance switch and a retraction switch;

the signal output ends of the maintenance switch and the recovery switch are connected with a third signal input end of the controller;

the maintenance switch is used for switching on the electromagnet through the controller to release the stamping turbine during ground maintenance; the withdrawing switch is used for withdrawing the stamping turbine by connecting the electromagnetic valve through the controller after ground maintenance is finished.

Further, during ground maintenance, the controller receives a maintenance switch signal and then controls the unloading valve of the hydraulic pump to be closed.

The invention provides a control system of a stamping turbine, which discharges or retracts the stamping turbine by sensing the speed of an airplane and the pressure in a hydraulic system; and providing a working indication signal for the cockpit and a rotating speed signal for the flight parameters. The product adopts DSP technology, software and hardware control technology and self-monitoring/self-detecting technology, and has high integration level and reliability.

Drawings

FIG. 1 is a schematic diagram of a ram turbine control system.

Detailed Description

As shown in FIG. 1, a ram turbine control system consists of a Q/KZQ-234RAT controller and a Q/KZH-876 ground maintenance box.

The RAT controller controls the RAT to be automatically released in the air and can also control the release manually through a switch; automatic discharge conditions: receiving an airspeed signal of one path of an air machine through an ARINC429 communication bus, opening an unfolding electromagnet signal 1 and an unfolding electromagnet signal 2 when the airspeed is detected to be more than 185km/h and low-pressure alarm signals are detected to appear in three sets of main hydraulic systems, and disconnecting the electromagnet signals 1 and 2 after 10 s;

detecting manual discharging conditions: after the manual switch signal is detected, the unfolding electromagnet signal 1 and the unfolding electromagnet signal 2 are turned on, and after 10s, the electromagnet signals 1 and 2 are disconnected.

Opening the unfolding electromagnet signal 1 and the unfolding electromagnet signal 2, and simultaneously switching on a hydraulic pump unloading valve to unload the hydraulic pump; when the rotating speed of the air ram turbine is detected to reach 4500r/m, the unloading valve of the hydraulic pump is disconnected, and the pressure of the hydraulic pump is built; when the RAT is released, the controller provides an unlocking indicator light signal for the cockpit, the RAT controller provides a continuous rotating speed signal for the flight parameter, and when the rotating speed of the air ram turbine reaches 4500r/m, the RAT controller provides a working indicator light signal for the cockpit.

When the ground is maintained, the ground maintenance switch is switched on, the RAT controller switches off the hydraulic pump unloading valve, and the ground driving device drives the ram air turbine hydraulic pump to build pressure; RAT ground manual payout: the ground maintenance switch signal is switched on, after the manual switch signal is detected, the unfolding electromagnet signal 1 and the unfolding electromagnet signal 2 are switched on, and after 10s, the electromagnet signals 1 and 2 are switched off; RAT recovery: and (4) switching on the ground maintenance switch, detecting that the recovery switch signal is effective, and switching on the electromagnetic valve signal after 20 s. The unlock indicator light signal is turned off.

The RAT controller is divided into four functional boards and a connecting bottom board according to functional modules. The board comprises an AP1 board, a CPU function board assembly, an AP3 board, a power supply and power driving board assembly, an AP4 board, a connecting bottom board assembly, an AP5 board, a lightning protection board assembly, an AP6 board, a CPU standard board assembly and the like.

a) AP1 board, CPU feature board assembly: the pressure signal conditioning system comprises an RS422 communication module, an ARINC429 communication module, a pressure signal conditioning circuit module and the like; b) AP3 board, power supply components: the independent secondary power supply conversion circuit meets the power supply requirement in a protocol, can resist the voltage spike of a power supply network and the influence of surge voltage, and adopts an EMI filtering module at the input end of a power supply signal to eliminate common mode interference and differential mode interference on a power line and output a circuit module of an alarm signal; c) AP4 board, connection backplane assembly: realizing signal connection of each component module; d) AP5 board, lightning protection panel assembly: the lightning protection device consists of a lightning protection component transient suppression diode; e) The AP6 board and the CPU standard board component are composed of a working channel CPU module, a data storage module, a program online updating module, a watchdog module, a logic control module, a detection module and the like. The ground maintenance box mainly comprises a case component, a button switch and an electric connector.