Continuous Control Set Model Predictive Control for Polysolenoid Linear Motor

In this paper, a model predictive control (MPC) based on the properties of the voltage source inverter is applied to Polysolenoid motors. Polysolenoid motors are a particular type of permanently excited synchronous motor. It has a tubular texture. On the stator of the motor, there are only two windings. Based on the structural characteristics of the motor, the used source is a two-phase voltage source inverter. When considering the voltage supplied to the two windings from the inverter as continuous, the continuous control set model predictive control (CCS-MPC) is developed at the force loop. Simulation results are performed to illustrate the performance of the implemented system

Controlling Permanent Magnet Polysolenoid Linear Motor Based On the Nature of Voltage Source Inverter Part 1: Two-Phase Voltage Source Inverter in Polysolenoid Motor Control Structure

Linear motor produces direct linear motion without intermediate mechanisms. It is usually fed by solid-state power supply. In this paper, a two-level voltage source inverter is designed to supply the Polysolenoid linear motor. Hardware solution and control rules of set of solid-state switches are proposed in order to implement voltage vector modulation technique of the inverter. The results are necessary for closed loop control of Polysolenoid linear motor

Dead-beat Control for Polysolenoid Linear Motor

The field-oriented control (FOC) has been successfully applied to permanently excited linear motors in high-quality drive systems. With this control method, the system kinematics is enhanced, and the upper limits of thrust and acceleration are increased. Accordingly, the accuracy of the position response will be improved. For the FOC method, the stator current control loop of the system plays a major role in the quality of the system. This paper introduces a current vector dead-beat control for Polysolenoid linear motors with fast, accurate, and decoupling characteristics. Numerical simulations demonstrate the advantage of the proposed algorithm

The Results of Sex Abuse Prevention Education For Ethnic Minority Junior High School Students In Ha Giang Province Regarding Awareness

Education activities on prevention of sexual abuse for junior high school students who are ethnic minorities aim to prevent students from having attitudes and behaviors that are inconsistent with social standards, and keep the educational environment. healthy education, in order to implement the movement of building friendly schools, effective students, contributing to the achievement of education goals of the Party and State in the stage of industrialization and modernization of the land. country. Sexual abuse prevention education for students aims to help students see the consequences of sexual abuse, have dissatisfied attitudes towards the above actions, and consciously fight against behaviors. wrong; actively detect abusive manifestations, promptly inform teachers and parents of students to prevent sexual abuse from happening. The article analyzes and finds some suitable solutions to help a better school environment

ORGANIZING ACTIVITIES FOR CHILDREN IN THE ORIENTATION OF STEAM EDUCATION

The content of the article analyzes the advantages of STEAM education in the implementation of the kindergarten program in the current period and introduces the plan and results of activities for preschool children according to the STEAM orientation at the school at “May 19” Kindergarten - Thai Nguyen City - Thai Nguyen Province. On the basis of theoretical analysis and current situation, the author proposes a number of recommendations to effectively organize activities for preschool children according to the STEAM orientation in Preschools.  &nbsp

KAT2A and KAT2B prevent double-stranded RNA accumulation and interferon signaling to maintain intestinal stem cell renewal

Histone acetyltransferase

MFSD7c functions as a transporter of choline at the blood-brain barrier

Mutations in the orphan transporter MFSD7c (also known as Flvcr2), are linked to Fowler syndrome. Here, we used Mfsd7c knockout (Mfsd7

Some di- and triterpenes of Wedelia urticaefolia (Bl.) (Asteraceae)

Wedelia urticaefolia Bl. DC. (Vietnamese name Sơn cúc nhám) has not yet been chemically studied. From leaves of this plant, four compounds were isolated: phytol (1), 3β-O-acetyl-b-amyrin (2), 3-O-tetradecanoylurs-12-ene-16β-ol (3), ent-kaur-16-ene-19-oic acid (4) and from the flowers, three compounds were isolated: b-amyrin (5), stigmasterol (6) and 3-O-tetradecanoylurs-12-ene-16β-ol (3). Their chemical structures were established by spectroscopic analysis

Which Distributions (or Families of Distributions) Best Represent Interval Uncertainty: Case of Permutation-Invariant Criteria

In many practical situations, we only know the interval containing the quantity of interest, we have no information about the probability of different values within this interval. In contrast to the cases when we know the distributions and can thus use Monte-Carlo simulations, processing such interval uncertainty is difficult -- crudely speaking, because we need to try all possible distributions on this interval. Sometimes, the problem can be simplified: namely, it is possible to select a single distribution (or a small family of distributions) whose analysis provides a good understanding of the situation. The most known case is when we use the Maximum Entropy approach and get the uniform distribution on the interval. Interesting, sensitivity analysis -- which has completely different objectives -- leads to selection of the same uniform distribution. In this paper, we provide a general explanation of why uniform distribution appears in different situations -- namely, it appears every time we have a permutation-invariant objective functions with the unique optimum. We also discuss what happens if there are several optima

Peptidoglycan editing provides immunity to Acinetobacter baumannii during bacterial warfare

Peptidoglycan (PG) is essential in most bacteria. Thus, it is often targeted by various assaults, including interbacterial attacks via the type VI secretion system (T6SS). Here, we report that the Gram-negative bacteriu