Efficient Design Scheme Research Articles

Intelligent control of quad-rotor aircrafts with a STM32 microcontroller using deep neural networks

PurposeDeployment of deep neural networks on embedded devices is becoming increasingly popular because it can reduce latency and energy consumption for data communication. This paper aims to give out a method for deployment the deep neural networks on a quad-rotor aircraft for further expanding its application scope.Design/methodology/approachIn this paper, a design scheme is proposed to implement the flight mission of the quad-rotor aircraft based on multi-sensor fusion. It integrates attitude acquisition module, global positioning system position acquisition module, optical flow sensor, ultrasonic sensor and Bluetooth communication module, etc. A 32-bit microcontroller is adopted as the main controller for the quad-rotor aircraft. To make the quad-rotor aircraft be more intelligent, the study also proposes a method to deploy the pre-trained deep neural networks model on the microcontroller based on the software packages of the RT-Thread internet of things operating system.FindingsThis design provides a simple and efficient design scheme to further integrate artificial intelligence (AI) algorithm for the control system design of quad-rotor aircraft.Originality/valueThis method provides an application example and a design reference for the implementation of AI algorithms on unmanned aerial vehicle or terminal robots.

ОБОСНОВАНИЕ КОНСТРУКТИВНЫХ СХЕМ ПОДВИЖНОГО СОСТАВА ДЛЯ ОРГАНИЗАЦИИ ПЕРЕВОЗКИ АВТОПОЕЗДОВ И КОЛЕСНОЙ ТЕХНИКИ

The work is dedicated to the substantiation of design schemes of platform-cars for the organization of road-trains and wheel engineering transportation by railway. In the paper the analysis presented of rolling-stock designs for the organization of road-train and wheel equipment transportation, legislation requirements, a standard legislation for designing rolling-stock, requirements of transport operators and a logistic infrastructure existing in the country allowed formulating criteria for the choice of an efficient design scheme of a platform-car. 
 In accordance with the criteria accepted there are offered three versions for the design of cars. In the first two versions of platform-cars there is foreseen a lower stationary platform on a based length. The difference of the second version consists in the application of a bearing element in a truss structure as a basic one. For both designs there are obtained utility patents. The third version provides for the presence of a load lifting platform. For the substantiation of an efficient design of a platform-car there is carried out an analysis of operation engineering-economic properties, values of driving dynamics, strength, fatigue life and a life cost of three car versions under consideration. The comparison of designs according to all parameters mentioned allowed defining the fact that taking into account the specificity of the domestic legislation, requirements of standard-regulation documentation for rolling-stock designing, and also the interests of transport operators the most efficient design scheme is a platform-car with a stationary lower level of a load platform on a base length and a bearing design of a truss type.

Three-dimensional nanodome-printed transparent conductors for high-performing Si photodetectors

A high-performing photodetector was achieved by nanoscale three-dimensional (3D) structures. Optically transparent and electrically conductive indium–tin–oxide (ITO) was periodically patterned onto a Si substrate by a nano-imprint method. This 3D ITO nanodome structures serve as a window layer of photo-reactive Si semiconductor material. The ITO nanodome photodetector provided remarkably high photoresponses for broad wavelengths (λs) of light by 77588.45% at λ=400nm, 162192% at λ=600nm, and 5615.30% at λ=1100nm. The ITO nanodome design is significantly effective to resolve the light-absorption limit of Si materials for short and long λs. We can suggest an efficient design scheme of Si-based photodetectors.

Study on the Efficient Design Scheme of Intelligent Building

As the global economy continues to grow, the resource consumption and environmental effects of the building and its running are growing. It is our common task to reduce building energy consumption and pollution emissions, to conserve resources, to protect the environment and achieve the harmonious coexistence of architecture and nature. And China, as a developing country, is facing with the heavy tasks to develop economy and improve peoples livelihood, at the same time, also facing with the challenges of resource and environmental constraints. Building energy conservation will be a long and arduous historical task, also an important and urgent realistic work. Currently, China is undergoing the worlds largest urban construction, while the building energy efficiency is the key area of energy conservation. Promoting the development of intelligent and green building is an important measure to implement the concept of the scientific development and to build a resource-saving and friendly society. Strengthening the international green building cooperation and exchanges will promote building energy efficiency to play a positive role.

Efficient Digital Compensation Technique for Path Imbalances in LINC Transmitters Using Complex Gain and Linear Model

In this paper, a simple and efficient design scheme for digital compensation of path imbalances in linear amplification with nonlinear component (LINC) transmitters is proposed to reduce signal distortion. For the LINC transmitters including path imbalances, an error vector magnitude (EVM) is analyzed and an optimal complex gain that minimizes the EVM is extracted. In addition, a straight-forward compensation scheme for the path imbalances is proposed using a least square method for complex gains of each radio frequency path. The effectiveness of the proposed method is compared with the other digital compensation methods. A LINC transmitter with multi-level quadrature amplitude modulation input signals is experimented to verify the performance of the suggested scheme. The proposed compensator can reduce the EVM and the adjacent channel power ratio of the output signals less than 2% and 45dBc, respectively.

107 作業者と操作機器との相互関係を考慮した特殊車両設計シミュレーション(OS1-2 デジタル設計・製造支援II)

An intensive SD-simulation method for special vehicle design considering human operator actions has been developed. Basic motions necessary for the vehicle handling such as "stable-riding, carefully-sitting, field view -checking, etc" are presented as examples of the most important factors for efficient design scheme. A rich human-body model with 44-DOF has been introduced. The model is utilized for formulation the concept of SecurePath as well as Secure View estimating adequate vehicle-related human actions in uncertain field environment.

ProcDef: Local-to-global Deformation for Skeleton-free Character Animation

Animations of characters with flexible bodies such as jellyfish, snails, and, hearts are difficult to design using traditional skeleton-based approaches. A standard approach is keyframing, but adjusting the shape of the flexible body for each key frame is tedious. In addition, the character cannot dynamically adjust its motion to respond to the environment or user input. This paper introduces a new procedural deformation framework (ProcDef) for designing and driving animations of such flexible objects. Our approach is to synthesize global motions procedurally by integrating local deformations. ProcDef provides an efficient design scheme for local deformation patterns; the user can control the orientation and magnitude of local deformations as well as the propagation of deformation signals by specifying line charts and volumetric fields. We also present a fast and robust deformation algorithm based on shape-matching dynamics and show some example animations to illustrate the feasibility of our framework.

1305 人間と調和した生活環境設計のためのシミュレーション(OS1-3 生産システムの国際化・情報共有)

An intensive 3D-simulation method for designing living environment assisting human behaviors has been developed. Basic motions necessary for daily life such as "arm-reaching, stand-up and sit-down, go up/down the stairs, etc" may be one of the most important factors for efficient design scheme. In this study, a rich human-body model with 44-DOF has been utilized in formulating basic daily-motion modules of human. Using multi-agent simulation technique with those modules, suitable living as well as housing environments can be designed with less efforts comparing to the mock-up type designing method widely used in industry.

Design of continuous long slot leaky-wave antenna for millimeter wave application

A simple and efficient design scheme of the continuous long slot leaky-wave antenna is developed. The key steps involved in the scheme are summarized. First, the cut-off frequencies of slot waveguides with different slot offsets are obtained by 3D finite-difference time-domain (FDTD) method. Second, the attenuation function α ra is estimated by the aperture distribution, and the attenuation function α rs is determined by the slot radiation. Finally, the attenuation function α ra is combined with the attenuation function α rs by the coefficient K. And an example in Ka band is presented. Moreover, the return loss of the E-plane Tee-junction (ET) and the radiation pattern of leaky-wave antenna are simulated. The scheme is verified by comparing with the experimental result.

An integrated design and optimization environment for industrial large scaled systems

The objective of this paper is to demonstrate how a combination of design optimization theory and methodology can be applied to large-scaled industrial systems to efficiently improve their performance, reduce their costs or improve other design objectives. The scheme described was developed when other conventional design and optimization strategies failed in efficiently optimizing an air-to-air missile design for Lockheed Martin Missile and Fire Control. The efficient design scheme was developed for the system using a combination of optimization and design of experiment techniques. It will be shown that multidisciplinary design optimization techniques can be improved with a dependency-tracking demand-driven language resulting in an attractive choice for solving industrial type design problems. The design methodology holds true even for systems in which a large number of disciplinary design and analysis software are integrated. One reason for the efficiency of the scheme is the parameterized dependency-tracking environment in which the optimizations are carried out. With the hybrid approach developed, combining exploration and optimization techniques with the unique dependency-tracking and demand driven features of the environment, it was possible to reduce the computational time by as much as 44%. The design scheme developed and presented can be used to improve the design and optimization process for numerous other engineering applications.