Positive linear systems

This paper presents a control approach for the double inverted pendulum on a cart (DIPC) by combining Hierarchical Sliding Mode Control (HSMC) and Disturbance Observer (DOB). The proposed method utilizes HSMC to ensure balance in both the pendulum angles and a cart position, while the DOB accurately estimates the system's disturbance.

10p visergeyne 18-06-2024 0 0   Download

Part 1 book "Studies in systems, decision and control" includes content: Introduction; unforced linear systems; stability of unforced linear systems; linear systems with forcing term.

81p muasambanhan06 03-02-2024 4 2   Download

The study was conducted to examine the role of user involvement accounting information system, external expert and organizational structure factors for the quality of accounting information systems in enterprises in Ho Chi Minh City. Research samples of 175 people that working in accounting positions in different types of company.

10p vimarillynhewson 02-01-2024 5 1   Download

The CyberKnife system features a robotically-positioned linear accelerator to deliver real-time imageguided stereotactic ablative body radiotherapy (SABR). It achieves steep dose gradients using irradiation from hundreds of different directions and increases the central dose of the gross tumor volume (GTV) without increasing the marginal dose to the planning target volume.

10p vischultz 20-10-2023 6 2   Download

This paper proposes a unified approach to study global exponential stability for a class of switched time-delay linear systems described by general linear functional differential equations.

12p vimulcahy 18-09-2023 4 4   Download

Part 1 of ebook "Applied linear algebra (Second edition)" has presents the following content: Chapter 1 - Linear algebraic systems; Chapter 2 - Vector spaces and bases; Chapter 3 - Inner products and norms; Chapter 4 - Orthogonality; Chapter 5 - Minimization and least squares;...

325p dieptieuung 20-07-2023 7 3   Download

Rotary Inverted Pendulum (RIP) plays a vital role in control engineering. Rotary Inverted Pendulum is a complex, nonlinear, non-minimum-phase and under-actuated system which has various applications in the field of Robotics. The main contribution of this paper is to design and control RIP by using Linear Quadratic Regulator (LQR) controller for stabilization at vertically upright position - the unstable equilibrium point, and Linear Quadratic Tracker (LQT) controller for tracking the desired trajectory.

11p vicaptainmarvel 21-04-2023 8 4   Download

This paper proposes a Takagi-Sugeno (TS) fuzzy approach for 2-dimensional of freedom overhead crane. Since this system is underactuated with nonlinear mathematical dynamic model, the requirement of achieving accurate positioning while eliminating oscillation is a challenging issue.

8p viporsche 25-10-2022 3 2   Download

In the paper "On L∞-Induced stabilization of positive linear systems with distributed delays" consider the stabilization problem under L∞-gain scheme for positive linear systems with distributed time delays. Novelty and main contribution of this paper are two points. First, a characterization of L∞-gain is reformulated using novel comparison techniques involving steady states of upper scaled systems with peak values of exogenous disturbances.

10p runordie3 27-06-2022 18 3   Download

The aim of the present paper is to give robust stability based on exponentially stable switched positive linear systems. Our theoretical analysis shows that if there exists a positive stable system of all positive subsystems, then a lower bound and upper bound for stability radius of the switched system under positive affine perturbations are established.

10p viwilliamleiding 10-12-2021 13 1   Download

In this paper, the control problem is presented to suppress the residual vibration of the rod transport system of a nuclear power plant. The transport rods are needed to transport to the target position in minimum possible time. However, the rods have been observed that oscillating at the end of maneuver.

8p viwilliamleiding 04-12-2021 22 1   Download

In this paper, a robust PI controller in combination with a linear quadratic regulator (LQR) is proposed to control a two-wheeled inverted pendulum robot (TWIPR) such that it is kept balanced while moving. The proposed TWIPR control system consists of two control loops. The inner loop has two PI controllers for two DC motors’ currents, which are separately designed based on a robust PI controller structure. The outer loop contains a LQR controller for the tilt angle, heading angle and position of the TWIPR.

15p 12120609 01-06-2020 26 2   Download

This work presents analysis, design and implementation of two schemes of Extended State Observer (ESO) to estimate the position, velocity and unmeasurable states for magnetic levitation systems, Linear ESO (LESO) and Nonlinear ESO (NESO).

11p vivalletta2711 11-01-2020 27 1   Download

This paper is concerned with the problem of practical stability of linear time-varying delay systems in the presence of bounded disturbances. Based on some comparison techniques associated with positive systems, explicit delay-independent conditions are derived for determining a neighborhood of the origin which ultimately bounds all state trajectories of the system.

16p vimoskva2711 02-01-2020 9 0   Download

The presence of Escherichia coli (EC) microorganisms in live organs can cause foodborne illnesses and food-related deaths. Here, EC assay was performed using a microcopper three-electrode (MCE) system, where a handmade MCE was used as a working electrode and Ag/AgCl as reference and platinum counter electrodes. Under a 1.0-ml EC standard, the diagnostic optimum conditions were sought. The analytical oxidation potential was obtained at -0.2 V via positive scan. Under these conditions, the stripping linear working range was attained with 0.2-0.7 mg/mL EC variations.

10p nguathienthan2 26-12-2019 13 0   Download

In this contribution, some textual portions of the Leonardo da Vinci’s work were analyzed with the aim to highlight how, moving from Aristotle and going beyond him, he combines the intermediate positions that, from the Greek philosopher, passing through Buridan, arrive to Newton. This has been performed following a path that passes through the formulation of the principle of causality, the use of the concept of linear relationship (pyramidal law) between cause and effect and the introduction of a duration of the impression (memory) of mechanical systems.

10p trinhthamhodang1 14-11-2019 15 1   Download

Breast cancer is a well-known health issue that has been a major focus for healthcare professionals for quite some time. Still, the most common noninvasive diagnostic tool - mammography - results in a high false positive rate along with risks of exposure to radiation. These disadvantages are magnified and become more severe when screenings are done repeatedly. To tackle this problem, we introduce a novel framework for uncomplicated diagnosis of breast cancer.

8p caygaocaolon1 13-11-2019 18 1   Download

The paper presents a solution based on a detailed analysis of system modeling to assess the stability of the load position during the control under the interplay of factors such as the elasticity of the rope. , weight change as well as other external impacts. Especially based on the actual conditions, analysis and design of automatic load position control system when there is no information about the load location, the main sensor is the sensor that measures the rotation position of the system. Here, lower and feel the pressure to measure the tension of the rope.

5p lequangvinh1608 13-08-2019 36 3   Download

In this paper, a Model Reference Adaptive Systems (MRAS) based an Adaptive System is proposed to a Two-Wheel Mobile Robot (TWMR). The TWMR is an open-loop unstable, non-linear and multi output system. The main task of this design is to keep the balance of the robot while moving toward the desired position.

7p praishy2 27-02-2019 44 3   Download

In this paper, we present a method to apply the exact linearization technique to the q-UAV without augmenting its dynamic model. For this purpose, using the vertical dynamic equation, the vertical position control input is designed separately so that the vertical acceleration is piecewise constant.

7p praishy2 27-02-2019 19 1   Download