Journal of Intelligent & Fuzzy Systems - Volume 38, issue 6

Authors: Liu, Haiming

Article Type: Research Article

Abstract: In order to solve the problem that the seeder operated by hand controller lacks high-precision visual function, cannot self-identify the seed target, and has low sowing precision, this paper proposes a new automatic sowing robot control research based on basketball motion capture. Through motion capture, obtain the target characteristics. Based on the target characteristics acquired by the vision module of the robot, the path planning of the robot is realized by rotating a certain parking space Angle on the basis of real-time positioning. The performance test shows that the accurate recognition rate is higher than 95.2%, and the maximum is …98.1%. The accurate seed localization rate was 95.5% and the maximum was 98.2%. By comparing the trajectory precision of the joint space of the auto-seeding robot, the precision of the trajectory control method is better than that of the traditional method. The residual removal rate of this method is 39.87% – 46.25%. The effect of different placement methods on seed placement depth showed that the average depth value obtained by this method was 0.001.49, and the depth variation coefficient was 0.70% – 2.00%. This method can improve the target recognition rate and positioning accuracy, meet the needs of high precision sowing operations, and increase the crop yield. Show more

Keywords: Basketball motion capture, automatic seeding robot, multimedia database, feature extraction, path planning

DOI: 10.3233/JIFS-179820

Citation: Journal of Intelligent & Fuzzy Systems, vol. 38, no. 6, pp. 7475-7485, 2020

Authors: Gong, Jianhu

Article Type: Research Article

Abstract: Aiming at the problem of plaintext recovery attack on 3DES algorithm with different byte keys, a plaintext recovery method for 3DES algorithm with different byte keys is proposed. In order to strengthen the anti-attack ability of DES algorithm, 3DES algorithm is used, which includes double-key 3DES of and triple-double-key 3DES. The 3DES algorithm with different seed key length is used to recover the plaintext. The attack algorithm for the first 256-byte plaintext encrypted by 3DES algorithm are given through the single byte deviation rule and double byte deviation rule. The results show that with the increase of the corresponding quantization …order, the processing effect of the method is better than that of the chaos mapping method (4.2 dB), and with the increase of the quantization order, the advantage of the method is constantly improved; the attack result of the method on 256 plaintext is shown as the 114th byte to 127th byte from 3072 bytes, so that in practical application, the plaintext encrypted by 3DES algorithm can be recovered better. Show more

Keywords: Different bytes, key, 3DES algorithm, plaintext, recovery, chaotic key

DOI: 10.3233/JIFS-179821

Citation: Journal of Intelligent & Fuzzy Systems, vol. 38, no. 6, pp. 7487-7495, 2020

Authors: Li, Jingjing

Article Type: Research Article

Abstract: In order to solve the problem of poor simulation accuracy of the traditional method for the coupled vibration of high-speed railway track, a discrete element simulation method for the coupled vibration of high-speed railway track under load is proposed. Based on the coupled vibration equation of high-speed railway track, the coupled vibration equation of high-speed railway track is built on the basis of determining the vector and parameters. The discrete element model is used to analyze the coupled vibration of high-speed railway track under the action of load, and the results of the discrete element simulation experiment of the coupled …vibration of high-speed railway track are obtained. In order to verify the simulation accuracy of the proposed discrete element method, a comparative experiment is designed. According to the experimental results, the proposed discrete element simulation method for coupled vibration of high-speed railway track under load greatly improves the simulation accuracy. In the 100th experiment, the simulation accuracy of this method is as high as 93%. The coupling vibration discrete element simulation method has better simulation effect. Show more

Keywords: Load, high speed railway, coupling vibration, discrete element simulation

DOI: 10.3233/JIFS-179822

Citation: Journal of Intelligent & Fuzzy Systems, vol. 38, no. 6, pp. 7497-7508, 2020

Authors: Tang, Ning

Article Type: Research Article

Abstract: In order to further improve the students’ learning ability, discrete analysis of linguistic pseudo-parallel constructions and symbols under the activation diffusion model is performed. Taking English as an example, this paper analyzes the usage of false paratactic construction from the perspectives of violating the restriction rules of paratactic structure and the irreplaceable nature of “and”; briefly introduces the discreteness of English vocabulary and analyzes the metaphorical function of the cognitive mode of lexical discreteness. Based on the improved activation diffusion model, the experiment class uses the activation diffusion model to implement the false parallel construction and vocabulary discrete teaching, while …the control class uses the traditional method to implement the false parallel construction and vocabulary discrete teaching. The final results show that the average English score of the experiment class is improved by 14.5%, while the control class is only improved by 3.2%. The results show that the activation diffusion model is helpful to grasp the pseudo paratactic construction and analyze the discreteness of English vocabulary. Show more

Keywords: Activation diffusion model, language, pseudo paratactic construction, symbol, vocabulary, discreteness

DOI: 10.3233/JIFS-179823

Citation: Journal of Intelligent & Fuzzy Systems, vol. 38, no. 6, pp. 7509-7520, 2020

Authors: Zhou, Yuebin | Xu, Jianlong

Article Type: Research Article

Abstract: When resources are limited and the perception tasks are time-constrained, if multiple perception tasks request the response at the same time, it is easy to cause scheduling deadlocks in the perception layer and affect its access speed and perception efficiency. This paper studies the mathematical feature expression method of task and resource allocation when deadlock occurs in the perception layer. According to the conditions of deadlock mutual exclusion, non preemption, request and hold, cycle waiting, a deadlock detection model of hierarchical scheduling system based on time constraints is adopted to establish the time constraint relationship of the deadlock detector and …the genetic algorithm is applied to solve the problem of multi-tasks deadlock relieving strategy optimization in the perceptive layer. The research results and simulation experiments show that the deadlock relieving optimization method based on genetic algorithm can quickly relieve the deadlock, ensure the minimum cost of relieving, and significantly improve the efficiency of deadlock relieving. Show more

Keywords: Internet of things, perception layer, information scheduling, deadlock relieving

DOI: 10.3233/JIFS-179824

Citation: Journal of Intelligent & Fuzzy Systems, vol. 38, no. 6, pp. 7521-7529, 2020

Authors: Hu, Hanqing | Ma, Yu | Wu, Sijian

Article Type: Research Article

Abstract: It is an inevitable requirement of the realization of Chinese rural revitalizing strategies to achieve high-quality development of rural economy. In this essay, the evaluation system for high-quality development of rural economy in the new era is constructed from six dimensions, including innovative development, infrastructure, ecological environment, economic achievements, economic stability and market mechanism and the method of entropy weight-fuzzy comprehensive evaluation is adopted to measure the levels of high-quality comprehensive development of rural economy of 30 provinces and cities of China in 2017. The research finds that the dimensional weight of ecological environment is the biggest, which is 31.76%, …followed by infrastructure, economic achievements, economic stability, innovative development and market mechanism from large to small. The level of high-quality development of rural economy in China is generally low and a majority of the provinces are backward. Therefore, to grasp the development status of Chinese rural economy and clarify balanced development between regions could provide basis for promoting comprehensively high-quality development of Chinese rural economy. Show more

Keywords: High-quality development of rural economy, entropy weight, fuzzy comprehensive evaluation, measurement system

DOI: 10.3233/JIFS-179825

Citation: Journal of Intelligent & Fuzzy Systems, vol. 38, no. 6, pp. 7531-7539, 2020

Authors: Ma, Liang | Gu, Jinan | Saeed, Tareq

Article Type: Research Article

Abstract: Gradually, OLED all screen has become one of mainstream mobile display devices. In this technology, the metal wiring in the bending area is prone to breakage, thus forming dead pixels. The yield rate may be affected by it. Therefore, the stress-strain analysis for the bending area in the bending process has become one of the main problems in OLED research. Firstly, the structural characteristics of OLED were analyzed, and the bending technology was introduced and analyzed. Secondly, the test process of discrete element method was analyzed. Finally, the strain analysis model was established through the multi-layer stacking characteristics of bending …area. Moreover, the simulation of bending process was completed by quasi-static analysis. Then, the validity of analysis was verified by the test comparison. The results show that the proposed method can not only analyze the mechanical properties of OLED bending area effectively under different cover plate stiffness, and the maximum error rate of the method is only 4.87, which is far lower than the traditional method. Therefore, the content and conclusion provide the further research of mechanical properties of OLED bending area with an important technical foundation. Show more

Keywords: Relaxation method, OLED, Newton’s second law, stress analysis

DOI: 10.3233/JIFS-179826

Citation: Journal of Intelligent & Fuzzy Systems, vol. 38, no. 6, pp. 7541-7551, 2020

Authors: Hu, Jun-ming | Zhang, Yan-ru | Xu, Gang | Zhang, Zhi-qiang

Article Type: Research Article

Abstract: This paper has investigated hydrodynamic performances of biomimetic flapping foils based on RANS method, and numerical results of aero foil profile of NACA are verified. Besides, propulsion performances of six types of biomimetic flapping foils with pure rolling motion are compared. The influence of phase difference and moving amplitude of rolling and pitching composite motion on propulsion performance is researched and the change of wake stream field is analyzed. The results show that the hydrodynamic performance of bionic humpback whale flapping foil is better, whose average thrust in one cycle and the maximum propulsive efficiency increase with the increasing flapping …frequency; the propulsion performance of rolling and pitching composite motion is superior to that of pure rolling motion, and its better values of phase difference and moving amplitude are respectively 90° and 6°; the leading edge vortex appears two times in one cycle, consistent with the instantaneous thrust numerical results. This method provides a reference value for the design and application of AUV. Show more

Keywords: RANS method, biomimetic flapping foils, rolling motion, rolling and pitching composite motion, hydrodynamic performance

DOI: 10.3233/JIFS-179827

Citation: Journal of Intelligent & Fuzzy Systems, vol. 38, no. 6, pp. 7553-7562, 2020

Authors: Zhao, Di

Article Type: Research Article

Abstract: Due to poor noise elimination effect and low detection accuracy in traditional methods, a method to detect DC power disturbance data for charging piles based on linear algebra was presented. Firstly, a filter was constructed based on the mathematical morphology theory of linear algebra to preprocess the disturbed waveform, so as to filter out the random noise and impulse noise in signal. Secondly, the filtered waveform was analyzed according to the change rule of grid. And then, a simple and fast singularity detection criterion was proposed to detect the disturbance accurately and quickly and thus to locate the time. According …to the location result, the clustering algorithm based on GK was used to identify various types of disturbance data, so as to make countermeasures. Finally, voltage sag, voltage swell, harmonic wave and the combined disturbances were used to verify the proposed method. The experimental results show that the maximum denoising result of this method is 37.3, and the maximum detection accuracy of disturbance data is 0.952, which is much higher than the traditional method. The results show that the signal-to-noise ratio is larger and the detection effect is better based on the proposed method, so that the Intersection-over-Union (IoU) is improved and the detection accuracy is better. In conclusion, the overall detection performance is better. Show more

Keywords: Mathematical morphology, GK clustering algorithm, signal recognition, SNR

DOI: 10.3233/JIFS-179828

Citation: Journal of Intelligent & Fuzzy Systems, vol. 38, no. 6, pp. 7563-7573, 2020

Authors: Li, Jinghong | Wang, Qiang

Article Type: Research Article

Abstract: In the past, in the process of tracking and controlling the discretely-actuated manipulator, the tracking result has a large error. To this end, a control system of trajectory tracking of discretely-actuated manipulator based on computed torque method was designed. The overall framework of the system was analyzed and designed, and the hardware of the system was designed in an integrated DSP information processing environment. The design of the monocular stereo sensor, drive controller, servo drive, etc. was described in detail. Then the control algorithm, the computed torque method, was analyzed. Finally, with the help of the control platform of discretely-actuated …manipulator, the control system of trajectory tracking of discretely-actuated manipulator based on computed torque method was verified. After the different control algorithms were added, the trajectory tracking accuracy of the discretely-actuated manipulator was compared. The experimental results show that the maximum errors of each joint in the system are 0.0568 rad, 0.0347 rad and 0.0044 rad, which are lower than the traditional system, it is shows that the reliability of the system is verified. Show more

Keywords: Monocular stereo sensor, drive controller, servo driver, calculation moment method

DOI: 10.3233/JIFS-179829

Citation: Journal of Intelligent & Fuzzy Systems, vol. 38, no. 6, pp. 7575-7584, 2020