As China39;s manufacturing and push forward the strategy of 2025 and digital products, the concept of intelligence and thought unceasingly thorough popular feeling, like many other products, suitcase also need to ac...
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ISBN:
(纸本)9781538695944
As China's manufacturing and push forward the strategy of 2025 and digital products, the concept of intelligence and thought unceasingly thorough popular feeling, like many other products, suitcase also need to accept the baptism of the wave of "intelligent". Nowadays, the luggage in the market has achieved a great variety, beautiful appearance and reliable quality, but it still has not changed much in function. Most of the time, baggage is a burden for pedestrians, and the burden of this burden becomes more pronounced in congested airports and stations, where time is needed. This project with the idea of this kind of phenomenon in design, produce a kind of can remote monitoring, can also close follow intelligent suitcase, suitcase is no longer travel "white elephants", but to be able to help others share intelligence "good partners". Through the efforts of the team members, at present, the work has completed the real production and theory of the authors of the report of science and technology, march, steering, tracking and obstacle avoidance or manned cargo, the final works have been able to do we want to realize fully the function.
In order to realize the intelligentization of downhole natural gas intelligent gas production technology, a set of downhole intelligent throttles suitable for remote control was designed. This article describes the me...
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In order to realize the intelligentization of downhole natural gas intelligent gas production technology, a set of downhole intelligent throttles suitable for remote control was designed. This article describes the mechanical structure design and remote-control mechanism of smart throttle. Using ANSYS finite element analysis software, the mechanical structure of underground intelligent throttle is analyzed and the fluid field of key parts of throttle is analyzed. According to the finite element analysis results, the mechanical design of the throttle satisfies the requirements and can provide equipment support for the implementation of downhole natural gas intelligent gas recovery technology. Finally, through the simulated well test, the feasibility of the throttle design was verified.
In the field of robotics and autonomous driving, achieving accurate 3D object detection is crucial for the perception of complex traffic environments. Most current research uses deep learning methods to extract object...
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The objective of this work is first to present the kinematics modelling of an aerobridge for the application of automated aerobridge docking process to the aircraft, which will solve the manpower shortage issues as we...
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ISBN:
(纸本)9781509060887
The objective of this work is first to present the kinematics modelling of an aerobridge for the application of automated aerobridge docking process to the aircraft, which will solve the manpower shortage issues as well as prevent the damage to aircraft due to human error in manual operation. As the aerobridge is a complex system which involves five active DOFs and four free DOFs, we have proposed an alternative solution of kinematics modelling for this higher order systems. And then the numerical solutions for the inverse kinematics equations are obtained using MATLAB and the kinematic modelling of the aerobridge is validated successfully through the motion simulation using ADAMS. The control schemes of the aero bridge docking process are proposed based on (1) Home position to Pre-set position, and (2) Pre-set position to Target position, which are developed in MATLAB/Simulink. Co-simulation model is established based on ADAMS/control and MATLAB/Simulink, which is used for modelling & design of the control systems, and also for visualizing and validating the aero bridge docking process.
It39;s very rational to have menu control and display function for oscilloscope to provide various functionality and make it user friendly. A responsive and well-structured menu design can make the system convenient...
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The vehicle will inevitably be vibrated in the process of running. The suspension is an important device to ensure the comfort and safety of the vehicle. In order to study the control method of the suspension, we simu...
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The vehicle will inevitably be vibrated in the process of running. The suspension is an important device to ensure the comfort and safety of the vehicle. In order to study the control method of the suspension, we simulate a quarter of the active suspension device which uses longitudinal acceleration as a measurement index. we compare the control effect of traditional PID control with robust predictive control. Through simulation, we find that the traditional PID control can realize the stability control of the active suspension without constraints. However, on the one hand, it brings serious jitter, on the other hand, it is not suitable for the actual constrained situation. On this basis, we consider the robust predictive control with constraints. By means of simulation, we obtain that the robust predictive control can produce less jitter under the premise of achieving the stable control of the constrained system, which is more suitable for practical engineering requirements.
A CMOS voltage differencing buffered amplifier (VDBA), whose transconductance gain can be varied linearly by the external DC bias current, is described in this paper. A current squaring circuit is used for biasing the...
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ISBN:
(纸本)9781538666630
A CMOS voltage differencing buffered amplifier (VDBA), whose transconductance gain can be varied linearly by the external DC bias current, is described in this paper. A current squaring circuit is used for biasing the transconductance amplifier with improved wide-input dynamic range, yielding electronically and linearly tunable transconductance. The application of the proposed VDBA in realizing a phase shifter circuit is also suggested. Simulations on the circuits are performed using PSPICE program to confirm the theory and demonstrate the circuit performances.
In recent times, the automotive industry has made significant steps towards digitization by focusing on electronic cockpits (E-Cockpits) to enhance the driving experience, comfort and safety. The incorporation of Touc...
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The main objective of this research is the presentation of a maximisation of payload haulage by use of UAV for payload spraying purposes of a pesticide in a regular field. Optimal control from principles of calculus o...
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ISBN:
(纸本)9798350307573;9798350307566
The main objective of this research is the presentation of a maximisation of payload haulage by use of UAV for payload spraying purposes of a pesticide in a regular field. Optimal control from principles of calculus of variations is applied to formulate the maximisation problem. The variable payload models the parameter dependant UAV. The system evolves on a principle fibre bundle on a SE(3) x S-2 manifold necessitating a from principles calculus of variations optimal formulation which is the key contribution of this paper. An illustrative spraying example is used to demonstrate a maximal pesticide spraying problem. Future work will include the formulation of optimal control problems on the semi-direct function Manifold
The highly nonlinear coupled dynamics in a parallel-kinematics manipulator typically cannot be simply treated as disturbance. Model-based control schemes are usually used to address this issue. This paper presents the...
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ISBN:
(纸本)9798350307573;9798350307566
The highly nonlinear coupled dynamics in a parallel-kinematics manipulator typically cannot be simply treated as disturbance. Model-based control schemes are usually used to address this issue. This paper presents the improvement of contouring accuracy of a planar 3PRR parallel-kinematics manipulator by applying two model-based control schemes namely decentralized PID control with centralized computed torque feedforward and centralized inverse dynamics control with feedforward. The simulation shows that both control schemes provide better contouring accuracy than decentralized PID control scheme. Furthermore, it is shown that the decentralized PID control with centralized computed torque feedforward outperforms the centralized inverse dynamics control with feedforward given an accurate dynamic model of the manipulator.
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