We present a new solution to tracking and mapping with an event camera. The motion of the camera contains both rotation translation displacements in plane, happen arbitrarily structured environment. As result, image matching may no longer be represented by low-dimensional homographic warping, thus complicating application commonly used Image Warped Events (IWE). introduce this problem performing contrast maximization 3D. 3D location rays cast for each is smoothly varied as function...

On the basis of classical computed torque control method, a composite nonlinear feedback (CNF) design method for robot manipulators with bounded torques is presented. The resulting controller consists two loops. inner loop full compensation dynamics and outer CNF stabilisation performance enhancement. Stability analysis carried out an estimate domain attraction specified in presence actuator saturation. In addition to guaranteed stability properties, takes advantage varying damping ratio...

Aimed at the guidance requirements of some missiles which attack targets with terminal impact angle point, a new integrated and control design scheme based on variable structure approach for missile constraint is proposed. First, mathematical model an in pitch plane established, then nonlinear transformation employed to transform into standard form suitable sliding mode method design. A sufficient condition existence linear surface given terms matrix inequalities (LMIs), corresponding...

Unknown time delay poses a significant challenge to the design of networked motion control systems. Moreover, modeling uncertainties, mechanical disturbance, and sensor noise coexist with in such systems, which makes controller synthesis even more challenging. It has been proven effective model as fictitious disturbance so that observer (DOB) can be employed cancel negative effect delay. In this brief, new double DOB (DDOB) is proposed by adding one into system handle actual external enable...

Internet brings us not only the convenience of communication but also some security risks, such as intercepting information and stealing information. Therefore, important needs to be hidden during communication. Steganography is most common hiding technology. This paper provides a literature review on digital image steganography. The existing steganography algorithms are classified into traditional deep learning-based algorithms. Moreover, their advantages weaknesses pointed out. Finally,...

Maintaining the temporal validity of real-time data in cyber-physical systems is critical importance to ensure correct decision making and appropriate system operation. Most existing work on retrieval assume that under study are always available for retrieval, developed scheduling algorithms mainly focus decisions while meeting constraints. This assumption, however does not hold many applications with intermittent availability. In this paper, we Availability-constrained Fresh Data Retrieval...

Recently, the development of satellite cloud image processing technology has become very quick; research aspects concentrate on judge type and classify mainly. These methods relate to subject category like pattern recognition etc; it one fields most quickly in technology. In image, texture is an important feature, since clear structure, computer analysis provide perfect future for study analyze all kinds image. Variational method a new segmentation recent years, which adapt modeling extract...

Maintaining the temporal validity of real-time data in cyber-physical systems (CPSs) is critical importance to ensure correct decision making and appropriate system operation. Most existing work on retrieval assumes that under study are always available, developed scheduling algorithms mainly focus decisions while meeting (freshness) constraints. This assumption, however does not hold many real-life CPS applications with intermittent availability, such as energy harvesting-based sensing...

Effective resource allocation (e.g., CPU cycles, network bandwidth, etc.) is the key to ensuring high quality feedback control in networked systems. This paper proposes a self-triggered method based on nonsingular terminal sliding mode guarantee required while minimizing system utilization. To further improve performance, we introduce nonlinear disturbance observer estimate external disturbance. With proof of stability, self-triggering condition tasks' inter-execution time established. not...

Precise train stop is a key technology of automatic operation. This study presents an adaptive generalized predictive controller ensuring the exactly at station. The designed by considering delay characteristics braking system and real-time constraint conditions It takes desired speed distance on line as control targets to obtain optimal variable, which calculated quadratic optimization. Concurrently online identification model parameters could improve performance controller. We carry out...

We consider the problem of resource provisioning for real-time cyber-physical applications in an open system environment where there does not exist a global scheduler that has complete knowledge performance requirements each individual application shares resources with other applications. Regularity-based Resource Partition (RRP) model is effective strategy to hierarchically partition and assign various slices among However, RRP changes requests from at run time. To allow time adaptation...

A control method for 100 nm scale motion platform driven by linear servo motors is investigated using a PMAC controller. The of speed and acceleration improved adjusting the parameters. High-quality characteristics obtained, which provides basis reference application to high-speed high-precision feed system.

EAF steelmaking is a complex physical and chemical reactions，has Highly nonlinearity, time variability strong coupling. As the electrode's contact with charging circuit, collapse of gasification furnace components liquid metal boiling other factors, often result in dramatic fluctuations arc current. At this point we need to quickly adjust location electrodes, so that current stable base on within certain range. This article fuzzy control neural network’s foundation,will study kind based...

We consider the problem of resource provisioning for real-time cyber-physical applications in an open system environment where there does not exist a global scheduler that has complete knowledge performance requirements each individual application shares resources with other applications. Regularity-based Resource Partition (RRP) model is effective strategy to hierarchically partition and assign various slices among such However, previous work on RRP only discusses uniform environment, are...

Abstract Traditional visual servo control based on location needs to convert two-dimensional information into three-dimensional space information, and the conversion process is subject many interference factors, leading large errors. Aiming at above problems, positioning of distribution line insulated wrapping robot manipulator studied. The position pose are described homogeneous transformed so as calibrate camera vision system manipulator. image Jacobian matrix established realize Compared...

Real-time end-to-end task scheduling in networked control systems (NCSs) requires the joint consideration of both network and computing resources to guarantee desired quality service (QoS). This paper introduces a new model for composite resource (CRS) real-time systems, which considers strict execution order sensing, computing, actuating segments based on loop target NCS. We prove that general CRS problem is NP-hard study two special cases problem. The first case restricts have unit-size...

This paper presents control design optimization for an asymmetric half-bridge (AHB) converter with current-doubler-rectifier (CDR) high-performance airborne applications. An accurate dynamic model will be first developed by taking into account the zero-voltage switching transition. Input voltage feedforward is used to improve line regulation. A simple linear law linearize complex nonlinear dc transfer function. Placement of output EMI filter and its effects on impedance as well feedback loop...

A new neural fuzzy combiner (NFC) is proposed to solve multi-objective control of missile. The NFC can combine n existing controllers in a hierarchical way form controller. It assumed that each controller (fuzzy controller) has been designed reach particular objective. method this paper an expert knowledge based method. Finally the numerical simulation results demonstrate simultaneously finish task controlling multi-objective.

A new approach of missile attitude controller using backstepping design method is proposed to improve the robustness nonlinear system. In this approach, introduced from step 1 n in procedure firstly. The attitudes are taken as control objects systems by controller, and according given reference signals pitch angle, yaw angle roll relative rudder deviation inputs derived controller. So can fly along trace decided angles. attack sideslip not be measured precisely fact, different previous...