The paper analyzes the preparation of software for acoustic signal classification with machine learning techniques for microcontrollers. The design process was tested for three types of devices: Nordic Thingy:53, *** ...
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The paper is devoted to the problem of robust finite-time control design for linear descriptor systems. The proposed homogeneity based control does not require system transformation to a canonical form and guarantee f...
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ISBN:
(数字)9798350395440
ISBN:
(纸本)9798350395457
The paper is devoted to the problem of robust finite-time control design for linear descriptor systems. The proposed homogeneity based control does not require system transformation to a canonical form and guarantee finite-time convergence in the presence of additive disturbances. The parameters tuning is based on the solution of linear matrix equations and inequalities.
The problem of the interaction of patent law and TRIZ is considered in this paper. A su-field analysis is applied from TRIZ tools. The European claim of the invention is used to describe the device. The claim is divid...
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This paper introduces a novel approach to improve robustness of visual-inertial odometry for ground mobile robots in dynamic environments. The proposed approach extends a standard Visual-Inertial Navigation System wit...
This paper introduces a novel approach to improve robustness of visual-inertial odometry for ground mobile robots in dynamic environments. The proposed approach extends a standard Visual-Inertial Navigation System with weighted least squares state estimation problem using alternating factor graph optimization. Additionally, we establish a reliability model for visual landmarks based on semantic prior knowledge of the scene. The robustness of our approach is validated on real-world experiments and evaluation results show stable and accurate state estimation in high-dynamic environments.
Adaptive Cruise control (ACC) system is a well-known Advanced Driver Assistant systems (ADAS) that offers safe, comfortable, and fuel-efficient self-driving capabilities. It utilizes a combination of hardware and soft...
Adaptive Cruise control (ACC) system is a well-known Advanced Driver Assistant systems (ADAS) that offers safe, comfortable, and fuel-efficient self-driving capabilities. It utilizes a combination of hardware and software to follow other vehicles, effectively. While the design and control of this system are complex, its user interface ensures ease of use and understanding. This paper aims to demonstrate the application of different control algorithms with the ACC system. Firstly, it introduces the Model Predictive controller (MPC), Levenberg-Marquardt Neural Network (LM NN), Bayesian Regularization Neural Network (BR NN), and Scaled Conjugate Gradient Neural Network (SCG NN). Subsequently, the paper presents a practical implementation of these three neural networks in conjunction with the Classical ACC controller. The performance of MPC with these three emulated neural networks is then evaluated. Finally, the paper concludes by establishing an evaluation and summary of the performance of these controllers.
The compensation problem of external disturbances for MIMO systems with feedforward control (combined control) is considered in the paper and the main problems of pole-placement technique application to interconnected...
The compensation problem of external disturbances for MIMO systems with feedforward control (combined control) is considered in the paper and the main problems of pole-placement technique application to interconnected multivariable systems are discussed. The compensation problem is solved using decoupled model principle and compensators are designed with measured or unmeasured state variables based on Sylvester equations and state observers. The results are supported with illustrative examples.
The compensation problem of external disturbances for MIMO systems with feedforward control (combined control) is considered in the paper. The compensation problem is solved using balanced model representation, and th...
The compensation problem of external disturbances for MIMO systems with feedforward control (combined control) is considered in the paper. The compensation problem is solved using balanced model representation, and the compensator is designed with measured or unmeasured state variables based on the Sylvester equation and the state observer. The effectiveness of the proposed method is illustrated by examples.
This paper discusses the issues of development of an algorithm for the movement of the measuring module of an automated system for non-destructive quality testing of the solder joints of the engine nozzle. The object ...
This paper discusses the issues of development of an algorithm for the movement of the measuring module of an automated system for non-destructive quality testing of the solder joints of the engine nozzle. The object of testing is identified as a one with a complex geometric shape, the flaws in soldered joints of the test object occur during the manufacturing process. Defects studied in this paper are: «dry joint», «partial dry joint» and «cold lap». The relevance of the development, as well as the problems of production and testing of engine nozzles, which do not allow to identify the required defects at the early stages of manufacturing assembly units without destroying the integrity of the engine nozzle, are substantiated. The existing approaches are described in terms of the choice of methods and means for non-destructive testing of engine nozzles of complex geometric shapes, their advantages and disadvantages are identified. The existing problems in terms of automation of the pulse-echo and through-transmission methods of ultrasonic testing are analysed, the advantages and disadvantages of the proposed methods are identified. The main factors that reduce the probability of detecting defects are determined, namely, the instability of the acoustic contact between the transducer and the test object, as well as the deviation of the acoustic axis of the transducer from the normal to the surface of the test object. The requirements for the motion algorithm of the measuring module of an automated non-destructive testing system with feedback based on the signal amplitude measured during scanning from the structural elements of the internal structure of the engine nozzle are determined.
Quality control of multilayer composite coatings of modern aircraft products is an urgent task. The purpose of this work is to substantiate the possibility of using the ultrasonic echo method for quality control of mu...
Quality control of multilayer composite coatings of modern aircraft products is an urgent task. The purpose of this work is to substantiate the possibility of using the ultrasonic echo method for quality control of multilayer composite coatings. The objectives of this work are to compare two methods of ultrasonic testing-with piezoelectric and optoacoustic generation of acoustic vibrations-on experimental samples of multilayer composite coatings. The experimental study was carried out on samples with one-, two-and three-layer coatings with artificial defects on a metal substrate and a substrate made of polymer composite materials. It is established that the ultrasound echo method with piezoelectric and optoacoustic generation of acoustic vibrations allows detecting stratifications in the coating and between the coating and the substrate, and measuring the total thickness of coatings. The ultrasonic method with optical-acoustic generation also resolves the interface between layers of a multi-layer coating, which also allows us to estimate the thickness of individual layers in a multi-layer coating.
This paper considers the issue of developing an algorithm for calculating the parameters of the primary transducer based on the magnetic induction method with differential inductors. A general algorithm for calculatin...
This paper considers the issue of developing an algorithm for calculating the parameters of the primary transducer based on the magnetic induction method with differential inductors. A general algorithm for calculating the primary transducer and, in particular, the geometric parameters of the inductor and indenter has been developed.
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