Vehicle driving wandering is a common failure mode that affects the performance of vehicles. Due to the greater mass and higher center of gravity of commercial vehicles compared to passenger cars, pull drift not only ...
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ISBN:
(纸本)9798350389814;9798350389807
Vehicle driving wandering is a common failure mode that affects the performance of vehicles. Due to the greater mass and higher center of gravity of commercial vehicles compared to passenger cars, pull drift not only increases driver fatigue but also increases the risk of rollover. Therefore, designing an effective compensation plan for commercial vehicle pull drift is an important and challenging issue. In this paper, based on the pull drift mechanism of heavy commercial vehicles, we propose an electric power steering pull drift compensation strategy for heavy commercial vehicles. Through three stages of functional scene recognition, compensation torque calculation, and compensation torque output, it can directly generate the torque demand for the steering system motor. Simulation experiments show that this method can accurately and quickly recognize pull drift scenarios and effectively reduce vehicle lateral error and roll angle.
With the development of the information age and electric vehicles, there is an increasing demand for highly safe and comfortable driving experiences. Autonomous driving, based on adaptive cruise systems, has emerged i...
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ISBN:
(纸本)9798350389814;9798350389807
With the development of the information age and electric vehicles, there is an increasing demand for highly safe and comfortable driving experiences. Autonomous driving, based on adaptive cruise systems, has emerged in response to these needs. As one of the most critical technologies in vehicle ADAS, adaptive cruise systems have always been a focal point in the research of autonomous driving technology. These systems can control vehicle speed, distance, and lane-changing operations through various sensors and decision-making facilities during long-distance driving, thereby reducing driver fatigue and enhancing driving comfort. At the same time, adaptive cruise systems carry out safer operations by precisely perceiving the environment and performing accurate calculations, meeting the demand for a safe and comfortable driving environment. The paper predicts vehicle behavior using the MPC (Model Predictive control) algorithm based on the principles of adaptive cruise systems. The intelligent decision-making and optimization instructions of the adaptive cruise system module are then used to control the vehicle's power, braking, and other systems to execute the commands. A simulation platform was built using Matlab/Simulink software to simulate working conditions such as distance control. The experimental results show that the MPC algorithm enhances the precision of the vehicle's following movement in the cruise system, demonstrating better practical effects. It adapts to various traffic environments and ensures greater stability and safety during driving.
Approximation inverse and nonlinear equations are critical topics in contemporary research. In this paper, we propose and utilize the concept of time-varying Zhang approximation inverse (TV-ZAI) to approximate the inv...
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ISBN:
(纸本)9798350389814;9798350389807
Approximation inverse and nonlinear equations are critical topics in contemporary research. In this paper, we propose and utilize the concept of time-varying Zhang approximation inverse (TV-ZAI) to approximate the inverse of time-varying Jacobian matrix, and to solve the nonlinear equation. Specifically, we propose the norm based definitions and spectral-radius (SR) based definitions to complement the TV-ZAI. The TV-ZAI is capable of dealing with both continuous and discrete time-varying problems, which makes it more efficient in computation and easier to implement in digital computers compared with analog computers. In addition, we propose a simple alternative for the time-varying optimal Zhang approximation inverse (TV-OZAI). Besides, the corresponding numerical experimental results show the feasibility and effectiveness of the TV-ZAI and TV-OZAI-alternative solutions for solving nonlinear equations.
This paper focuses on formation control for multiple underactuated unmanned surface vessels (USVs) system based on the leader-follower method. A new formation control model is first proposed. Then control laws for the...
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ISBN:
(纸本)9798350364200;9798350364194
This paper focuses on formation control for multiple underactuated unmanned surface vessels (USVs) system based on the leader-follower method. A new formation control model is first proposed. Then control laws for the kinematics and dynamics parts are developed separately based on the Lyapunov direct method and proportional control. The formation controller guarantees that the fleet can move in the desired structure with stability under disturbances. Numerical simulations are conducted to verify the controller's effectiveness.
In robotics, while rigid joints are common due to their accuracy and fast response ability, elastic joints are well-known for their safety when interacting with the environment. To harmonise the advantages of these jo...
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ISBN:
(纸本)9798350377712;9798350377705
In robotics, while rigid joints are common due to their accuracy and fast response ability, elastic joints are well-known for their safety when interacting with the environment. To harmonise the advantages of these joint types, robots with mixed rigid-elastic joints can be considered. In this paper, a robust-adaptive two-loop control algorithm is proposed to control this type of hybrid robots when there are uncertainties in system parameters. In the outer loop, a robust control algorithm is proposed to deal with the uncertainties in the parameters of the joint dynamics, together with an adaptive controller for the rigid joints. In the inner loop, another robust control algorithm is proposed to handle the uncertainties in system parameters of the elastic joint's motor contribution, and a similar adaptive control algorithm is presented to manipulate the elastic joints' motors. The stability of the system is assured by Lyapunov's stability theory. Finally, simulations are conducted to verify the proposed control algorithm.
This paper proposes an adaptive direct-discretized recurrent neural network (ADD-RNN) algorithm with fuzzy factor to address the problem of future distinct-layer inequality and equation system (FDLIES). For comparison...
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ISBN:
(纸本)9798350389814;9798350389807
This paper proposes an adaptive direct-discretized recurrent neural network (ADD-RNN) algorithm with fuzzy factor to address the problem of future distinct-layer inequality and equation system (FDLIES). For comparison purposes, a traditional indirect-discretized RNN (TID-RNN) algorithm is also developed to solve the same problem. The superior performance of the proposed ADD-RNN algorithm is validated through numerical experiment. The applicability and meliority of the proposed ADD-RNN algorithm are further demonstrated by applying it to tackle a motion planning and control problem of a robot manipulator with an additional constraint, which is formulated as a specific FDLIES problem.
To enhance the efficiency of power transmission line inspections, this paper designs a novel aerial robot capable of hanging line operations and proposes an automatic hanging line flight control method. The robot'...
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Deep neural networks have rapidly advanced, with many models demonstrating outstanding performance. However, robustness is crucial for ensuring the safety and stability of artificial intelligence, especially in real-w...
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ISBN:
(纸本)9798350389814;9798350389807
Deep neural networks have rapidly advanced, with many models demonstrating outstanding performance. However, robustness is crucial for ensuring the safety and stability of artificial intelligence, especially in real-world applications where models are frequently exposed to interference. Research on adversarial example generation is significant for improving model robustness and preventing sensitive information from being interpreted. This paper proposes a Cooperative Co-evolutionary Genetic Algorithm (CCGA) for generating adversarial examples with small perturbations. The algorithm adopts a collaborative optimization strategy, demonstrating high efficiency when dealing with large-scale problems. Furthermore, it operates as a black-box attack method, requiring only access to the model's inputs and outputs without any knowledge of its structure or parameters. Experimental results on the MNIST and CIFAR-10 datasets show that CCGA achieves adversarial success rates of 97% and 100%, respectively, with mean squared errors as low as 7.41 and 12.00 between the adversarial and original samples, the differences are nearly imperceptible to human eyes.
With the improvement of our country's requirements for the development of ecological civilization, as well as the further enhancement of our country's urban motorization level, highway sanitation is naturally ...
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Considering difficulties in the design of lightweight and autonomous zero gravity space floating robot inside Space Stations, referring to the characteristics of floating robots already in orbit on the international S...
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ISBN:
(纸本)9798350352634;9798350352627
Considering difficulties in the design of lightweight and autonomous zero gravity space floating robot inside Space Stations, referring to the characteristics of floating robots already in orbit on the international Space Station (ISS), as well as the needs of astronauts and space station operation and maintenance for floating robots, a 5Kg level lightweight floating robot using 3D printing and modular design is proposed. To achieve highprecision autonomous navigation and control in limited space of the Space Stations, a closed-loop trajectory planning and control method based on visual slam and model predictive control, is proposed for our intelligent floating robot. By using a zerogravity suspension device, ground tests proved the correctness of hardware and software design, including structural, propulsion, navigation, control and human-computer interaction design. In the future, it can be deployed to the China Space Station.
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