Passive electric control brake valve controller

Abstract

A passive electric control brake valve controller comprises a single-chip microcomputer, a motor, a pressure sensor, a Hall sensor and a power source, the single-chip microcomputer is connected with the motor in a driving mode through an H bridge, a current detection module is arranged between the motor and the single-chip microcomputer and used for detecting the current of the motor, and pressure information collected by the pressure sensor is transmitted to the single-chip microcomputer after being subjected to signal conditioning; the single-chip microcomputer can receive PWM signals input by the emergency brake controller and control the motor to operate, the motor operates to output corresponding brake valve pressure to control the brake valve to work to achieve braking, the pressure sensor is used for collecting the brake valve pressure, the Hall sensor is used for collecting the zero position and the final position of the motor, and the power source is used for supplying power to the controller. The pressure sensor is arranged to collect the brake pressure of the brake valve, pressure data are fed back to the single chip microcomputer to be compared with PWM signals, PID calculation is conducted, the brake signals can be adjusted in time, the Hall sensor is arranged to indicate the position of the motor, the motor can be controlled to stop rotating in time, and the controller is high in response speed and brake efficiency.

Description

Technical Field

[0001] This invention relates to the field of aircraft braking technology, and in particular to a passive electronic brake valve controller. Background Technology

[0002] The emergence and development of electronic brake valve controller components have led to faster and more precise responses to braking commands. Electronic control replaces or enhances traditional mechanical / hydraulic links through electrical signals, using these signals to drive a motor and provide braking force. This results in a system with simple structure, light weight, easy maintenance, and high safety. However, existing electronic brake valve controllers do not accurately correlate braking signals and pressures, leading to slow braking response and low braking efficiency. Summary of the Invention

[0003] To address the problems mentioned in the background section, this invention provides a passive electronic brake valve controller.

[0004] This invention discloses the following technical solution: a passive electronically controlled brake valve controller, comprising a microcontroller, a motor, a pressure sensor, a Hall sensor, and a power supply. The microcontroller is connected to the motor via an H-bridge drive. A current detection module is provided between the motor and the microcontroller to detect the motor current. The pressure information collected by the pressure sensor is transmitted to the microcontroller after signal conditioning. The microcontroller can receive the PWM signal input from the emergency brake controller and control the motor to run. The motor operation outputs the corresponding brake valve pressure to control the brake valve to work and achieve braking. The pressure sensor is used to collect the brake valve pressure, and the Hall sensor is used to collect the zero-point position and end-point position of the motor. The power supply is used to power the controller.

[0005] Furthermore, the Hall sensor includes a zero-point Hall sensor and an end-point Hall sensor, corresponding to the zero-point and end-point travel positions of the motor, respectively.

[0006] Furthermore, the controller also includes a housing and a cover for mounting the controller. The controller is mounted and fixed inside the housing, and the cover is mounted on the housing using screws. The side of the housing also has two sets of plugs and sockets for connecting power or sensors.

[0007] Furthermore, a sealing gasket is provided at the mating point between the outer casing and the cover to improve the sealing performance of the outer casing and protect the controller.

[0008] Furthermore, the plug and socket model is J599 / 26WA35SN.

[0009] Beneficial effects: Compared with the prior art, the passive electronic brake valve controller of the present invention collects the braking pressure of the brake valve by setting a pressure sensor. The pressure data is fed back to the microcontroller and compared with the PWM signal and PID calculation is performed. The brake signal can be adjusted in time. The Hall sensor indicates the zero point position and end point position of the motor, which can control the motor to stop in time. The controller has a fast response speed and high braking efficiency. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the controller of the present invention; Figure 2 This is a schematic diagram of the controller structure of the present invention; Figure 3 This is a schematic diagram of the Hall sensor structure of the present invention.

[0011] In the diagram: 1. Outer shell; 2. Cover; 3. Screw; 4. Sealing gasket; 5. Socket; 6. Hall sensor; 7. Detailed Implementation

[0012] like Figures 1 to 3 As shown, a passive electronic brake valve controller includes a microcontroller, a motor, a pressure sensor, a Hall sensor 7, and a power supply. The microcontroller is connected to the motor via an H-bridge drive. A current detection module is provided between the motor and the microcontroller to detect the motor current. The pressure information collected by the pressure sensor is transmitted to the microcontroller after signal conditioning. The microcontroller can receive the PWM signal input from the emergency brake controller and control the motor to run. The motor operation outputs the corresponding brake valve pressure to control the brake valve to work and achieve braking. The pressure sensor is used to collect the brake valve pressure, and the Hall sensor 7 is used to collect the zero-point position and the end-point position of the motor. The power supply is used to power the controller. The Hall sensor 7 includes a zero-point Hall sensor and an end-point Hall sensor, which correspond to the zero-point and end-point stroke positions of the motor, respectively.

[0013] The controller also includes a housing 1 and a cover 2 for mounting the controller. The controller is installed and fixed inside the housing 1. The cover 2 is installed on the housing 1 using screws 3. The side of the housing 1 is also provided with two sets of plugs 5 and sockets 6 for connecting power or sensors. A sealing gasket 4 is provided at the mating point between the housing 1 and the cover 2 to improve the sealing performance of the housing 1 and protect the controller. The plugs 5 and sockets 6 are model J599 / 26WA35SN.

[0014] The controller's hardware circuitry includes lightning protection, filtering, power supply voltage conversion, pressure input, pressure feedback, Hall signal processing, microcontroller, motor drive, and current detection modules.

[0015] The power supply voltage conversion module, which generates the 12V and 3.3V voltages required for the operation of various modules within the controller assembly, is composed of a power filter, a voltage regulator, and a TVS diode.

[0016] The microcontroller module performs sampling processing. It compares the PWM signal output by the emergency brake controller with the brake valve pressure and performs PID calculations.

[0017] The Hall sensor module is used to indicate the zero and end positions of the motor. When the motor magnet reaches the position of the Hall element on the Hall sensor, the Hall element outputs a low-level signal. The microcontroller recognizes the low-level signal and controls the motor to stop.

[0018] The pressure feedback module uses an operational amplifier to form a non-inverting proportional amplifier. The (0-3)V voltage, which has been amplified by the instrument operational amplifier, is amplified again to a (0-5)V voltage signal and fed back to the flight management computer so that the flight management computer can determine whether the product pressure meets the requirements.

[0019] The current detection module is used to collect the current of the motor, and then the microcontroller determines whether an overload has occurred by judging the magnitude of the current.

[0020] The motor drive circuit consists of an H-bridge driver and MOSFETs. Its main function is to control the forward, reverse, and stop of the motor based on the PWM signal output by the microcontroller.

[0021] In operation, the controller determines the duty cycle of the PWM signal based on the high-level time of the 1kHz PWM signal output by the emergency brake controller; the microcontroller performs sampling processing; the microcontroller compares the PWM signal output by the emergency brake controller with the brake valve pressure and performs PID calculation, and outputs the corresponding PWM signal to the DC motor H-bridge drive component based on the PID calculation result, controlling the motor's forward rotation, reverse rotation, and stop to obtain the output pressure corresponding to the PWM signal of the emergency brake controller; the Hall sensor detects the zero point and end point travel position of the motor, and when the motor travels to the zero point and end point travel position, the Hall sensor outputs a low-level signal, and the controller component controls the motor to stop based on this signal.

[0022] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A passive electrically controlled brake valve controller, characterized by: It includes single-chip microcomputer, motor, pressure sensor, Hall sensor (7) and power supply, the single-chip microcomputer is connected with motor through H bridge drive, current detection module is arranged between motor and single-chip microcomputer for detecting the current of motor, the pressure information collected by pressure sensor is transmitted to single-chip microcomputer after signal conditioning, single-chip microcomputer can receive the PWM signal input by emergency brake controller and control the operation of motor, the corresponding brake valve pressure control brake valve work is realized by the output of motor operation, pressure sensor is used for collecting brake valve pressure, Hall sensor (7) is used for collecting zero point position and end point position of motor, the power supply is used for power supply of controller.

2. The passive electrically controlled brake valve controller of claim 1, wherein: The Hall sensor (7) includes zero point Hall sensor and end point Hall sensor, corresponding to the zero point and end point stroke position of the motor respectively.

3. The passive electrically controlled brake valve controller of claim 1, wherein: The controller further includes a shell (1) and a cover (2), the controller is fixedly installed in the shell (1), the cover (2) is installed on the shell (1) by using screws (3), and the shell (1) is further provided with two groups of plugs (5) and sockets (6) on the side.

4. The passive electrically controlled brake valve controller of claim 3, wherein: The shell (1) and the cover (2) are provided with sealing gaskets (4) at the cooperation positions.

5. The passive electrically controlled brake valve controller of claim 3, wherein: The plug (5) and the socket (6) are J599 / 26WA35SN.

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