Supercharge Your Innovation With Domain-Expert AI Agents!

Flight speed protection method and system for oil-driven unmanned helicopter and computer device

An unmanned helicopter, flight speed technology, applied in the control/regulation system, non-electric variable control, vehicle position/route/altitude control, etc. stability, high engineering application value, and the effect of preventing false positives and false positives

Pending Publication Date: 2021-10-08
NANJING RES INST ON SIMULATION TECHN
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some special cases (such as remote control link communication failure, operator error and other unexpected factors), the flight speed of the unmanned helicopter may exceed the specified range. Once it crosses the boundary, the flight status of the unmanned helicopter will deteriorate sharply. Protection measures, there is a risk of crash, and the current vacancy in the protection of the flight speed boundary of oil-powered unmanned helicopters needs to be resolved urgently

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Flight speed protection method and system for oil-driven unmanned helicopter and computer device
  • Flight speed protection method and system for oil-driven unmanned helicopter and computer device
  • Flight speed protection method and system for oil-driven unmanned helicopter and computer device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] For a surveying and mapping flight mission, the altitude of the take-off point is 1500m, and the flight environment temperature is 15°C. The ground speed boundary of a certain type of oil-powered unmanned helicopter in this environment is V ref , the airspeed boundary is V aero_max , the pitch angle attitude boundary is θ trim_max °, the control boundary of longitudinal variable pitch is δ e_max . Due to airflow disturbance factors, the unmanned helicopter triggered an attitude out-of-bounds alarm during the accelerated flight process. Under the action of the protection method proposed in this paper, the UAV system automatically adjusts the flight speed to a safe range to ensure flight safety.

[0110] Such as Figure 8 ~ Figure 10 As shown, the ground speed of the UAV exceeds the ground speed boundary V at 6’03” ref , the pitch angle exceeds the pitch angle attitude boundary at 6'04". Then, the ground speed and pitch angle exceed the corresponding boundary T1 time ...

Embodiment 2

[0114] For a surveying and mapping flight mission, the altitude of the take-off point is 3500m, and the flight environment temperature is 5°C. The ground speed boundary of a certain type of oil-powered unmanned helicopter in this environment is V ref , the airspeed boundary is V aero_max , the pitch angle attitude boundary is head down θ trim_max , the control boundary of longitudinal variable pitch is δ e_max . Due to airflow disturbance factors, the unmanned helicopter triggered an airspeed cross-border alarm during the accelerated flight process. Under the action of the protection method proposed in this paper, the UAV system automatically adjusts the flight speed to a safe range to ensure flight safety.

[0115] Such as Figure 12 to Figure 14 As shown, the ground speed of the UAV exceeds the ground speed boundary V at 5’17” ref , the airspeed exceeds the airspeed boundary V at 5'23" aero_max . Subsequently, the ground speed and airspeed exceeded the boundary at the ...

Embodiment 3

[0119] For a power inspection flight mission, the altitude of the take-off point is 2500m, and the flight environment temperature is 5°C. The ground speed boundary of a certain type of oil-powered unmanned helicopter in this environment is V ref , the airspeed boundary is V aero_max , the pitch angle attitude boundary is head down θ trim_max , the control boundary of longitudinal variable pitch is δ e_max . Due to airflow disturbance factors, the unmanned helicopter triggered a range-variable cross-border alarm during the acceleration flight process. Under the action of the protection method proposed in this paper, the UAV system automatically adjusts the flight speed to a safe range to ensure flight safety.

[0120] Such as Figure 16 ~ Figure 18 As shown, the drone's ground speed exceeds the ground speed boundary V at 6'35" ref , the longitudinal pitch exceeds the longitudinal pitch boundary δ at 6’35” e_max . Subsequently, the ground speed and the longitudinal variabl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a flight speed protection method and system for an oil-driven unmanned helicopter and a computer device. The method comprises the following steps: storing a height-speed flight envelope, a pitch attitude trim curve and a longitudinal variable pitch trim curve into a database; acquiring a current flight environment state of the unmanned helicopter; querying a database by adopting a linear difference method according to the current flight environment state to obtain a current boundary value; respectively judging whether the current pitch angle attitude, the flight airspeed and the longitudinal variable pitch manipulated variable of the unmanned helicopter are in an alarm state or not through an attitude cross-border judgment algorithm, an airspeed cross-border judgment algorithm and a variable pitch cross-border judgment algorithm; and if any one of the pitch angle attitude, the flight airspeed and the longitudinal variable pitch manipulated variable being in an alarm state, starting a speed protection strategy until the flight airspeed of the unmanned helicopter is adjusted to be within an allowable range. According to the invention, the accuracy and rationality of the speed cross-border judgment of the unmanned helicopter are improved, and the flight safety, the environmental adaptability and the intelligent level are effectively improved.

Description

technical field [0001] The invention relates to an unmanned helicopter, in particular to a method, system and computer equipment for protecting the flight speed of an oil-driven unmanned helicopter. Background technique [0002] The unmanned aerial vehicle system refers to the aircraft that uses ground wireless remote control equipment and airborne systems to finally realize wireless control. In order to achieve wireless control, the UAV system will be equipped with communication link equipment. When the UAV is flying, various control commands from the ground measurement and control station will be sent to the UAV through the sending station on the ground. After receiving the control command, the receiving station sends the command data to the flight control system for data analysis and processing. Finally, the flight control system will automatically control the UAV and complete the corresponding flight actions according to the ground control command. [0003] The flight e...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/08G05D1/10
CPCG05D1/0808G05D1/106
Inventor 赵佳於拯威吴平张浩黄兵旺杨帅
Owner NANJING RES INST ON SIMULATION TECHN
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com