The proposal described in this chapter uses the Differential Evolution (DE) algorithm as an optimization method in which we want to dynamically adapt its parameters using fuzzy logic control systems, with the goal that the fuzzy system gives the optimal parameter of the DE algorithm to find better results, depending on the type of problems the DE is applied.

关键词：参数；模糊逻辑控制系统；差分进化

查看摘要 索取原文[14页]

Ball-screw-driven stages are extensively used in industry for high-precision fabrication thanks to the low cost and high efficiency. However, spring-like nonlinear frictions including the friction at the linear guide and the friction within screw and nut grooves can significantly degrade the control performance. In this paper, the effectiveness and imperfection of conventional friction compensation is firstly analyzed. Then, a novel friction compensation method considering load-side frictions is proposed to enhance the control performance. Simulations and experiments are also performed to evaluate the effectiveness of the proposed method.

关键词：滚珠螺杆驱动的阶段；摩擦补偿；弹性变形

查看摘要 索取原文[6页]

Nanoscale motion control is required for miniaturization and performance improvement of mechatronic systems. In motion control at nanometer scale, disturbances which do not affect the system at macro scale might greatly influence the control performance. The torque ripple caused by distortion of current is one of the most serious disturbance elements and should be eliminated. The compensation method of the distortion of the current has been researched, but conventional method can not be applied to control system in nanometer scale because short sampling time is needed. To address this problem, the method of the filter designing is proposed in this paper. The effect of the distortion of the current can be reduced by designing the filter in disturbance observer to have low-pass filter and band-stop filter. By using high-precision acceleration control based on proposed method, persistent oscillation can be suppressed, control accuracy can be improved. The validity of the proposal is comfirmed by experiments.

关键词：扰动观测；运动控制；纳米定位

查看摘要 索取原文[6页]

Haptic transmission using bilateral control is used not only for tele-operation of robotic systems but also for extraction and reproduction of human motions. Popularization of the haptic technology causes growing concern about increase in the amount of haptic data of human motions. This study clarifies that conventional bilateral control is equivalent to equilibrium force control of impedance control. In other words, haptic transmission can be realized only by using information of the equilibrium force. The validity of the proposed force-based approach is verified by simulations. The obtained results show the proposed approach achieves the same performance comparing with conventional approach, which requires to transmit position, velocity, and force information. This result shows that the proposed approach succeeded to decrease the amount of haptic data without any shortcomings.

关键词：阻抗控制；双向控制；触觉；运动控制

查看摘要 索取原文[6页]

This paper presents existing train control systems in France and gives an overview of recent and future developments, including ERTMS and NExT. It describes how train control systems for mass transit and very busy suburban lines are converging, and how centralisation of control is strongly affecting operational management of main lines. It also gives up-to-date details of the evolution of the French railway system, with an emphasis on system integration, from different points of view-technical, organisational, customer service, infrastructure management, intermodality and sustainability. The intention is not to 'reinvent the wheel,' and some of the information on train control principles given here is derived from existing references, which are listed at the end.

关键词：列车控制系统；运营管理；基础设施管理

查看摘要 索取原文[15页]

A semi-active (SA) control system based on the use of smart mag-netorheological (MR) dampers to control the structural response of a wind turbine is proposed herein. The innovative approach is based on the implementation and use of a variable-properties base restraint. This is able to modify in real time its mechanical properties according to the instantaneous decision of a given control logic, the latter addressed to control one or more structural response parameters. The smart base restraint is thought to be a combination of a smooth hinge, elastic springs, large-scale adjustable MR dampers, and a control algorithm that instantaneously commands the latter during the motion, making them to modulate the reactive force as needed to achieve the performance goals. The design and operation of such a system are shown with reference to a case study consisting of an almost 100 m tall wind turbine, realized in a 1/20 scale model at the Denmark Technical University (DTU). Shaking table tests have been performed under the action of two different types of wind loads and by using two purposely written control logics, highlighting the high effectiveness of the proposed SA control technique and encouraging to further investigate in such direction.

关键词：半主动控制；风力发电机组；磁流变阻尼器

查看摘要 索取原文[33页]

Motion control system is a challenging problem in the area of control systems. It is very useful to demonstrate concepts in linear control such as the stabilization of unstable systems. Motion control system plays important roles in industrial equipment such as machine tools, semiconductor manufacturing systems, and robot systems. One type of motion control system is the point-to-point (FTP) positioning system, which is used to move an object from one point to another point. Linear motion servo system is a machine that moves the cart from one point to another point. This system consists of a cart driven by a DC motor, via a rack and pinion mechanism to ensure consistent and continuous traction. Till date, many types of controllers have been proposed and evaluated for positioning systems. Two types of controllers discussed in this thesis are Proportional-Velocity (PV) and Nominal Characteristic Trajectory Following (NCTF). The experimental results showed that the PV was successfully implemented which controlled the settling time, rise time, and steady-state error of the desired position. However, the overshoot performances show its disadvantages. Additionally, the PV controller design is a time-consuming process, since model and parameters of the linear motion servo system are needed. Therefore, the needs for higher performance controller become important for the simplicity of the controller design. Hence, the investigation proceeds with the non-model-based NCTF controller to control the cart position of the linear motion servo system. The NCTF controller consists of a Nominal Characteristic Trajectory (NCT) and PI compensator. The NCTF controller was designed based on a simple open-loop experiment of the object. The experimental results showed that the NCTF controller is more effective for controlling the position of linear motion servo system than the PV controller.

关键词：标称特性轨迹跟踪；性能比较；运动控制系统

查看摘要 索取原文[28页]

This project centered on a close interaction between the TCON Division of Fire line, Inc. and various individuals affiliated with the College of Science, Technology, Engineering, and Mathematics (STEM) at Youngstown State University (YSU). Fireline, a local company within 10 minutes walking distance from the YSU campus core, has developed a unique process that utilizes displacement reactions to transform ceramic preforms into ceramic-metallic co-continuous interpenetrating phase composites with enhanced properties while retaining the original shape and dimensions of the preform. Through initial development efforts, it was discovered that TCON(TradeName) composite materials have extraordinary macro-, micro-, and nanoscale features that lead to their exceptional properties ideal for applications that require cost effective, lightweight materials. The unique properties of TCON composites in general are derived from the fine interlocking of ceramic and metallic phases throughout the composite microstructure. The ceramic phase provides high stiffness, low density and high strength to the composite, while the continuous network of reinforced metal gives high thermal & electrical conductivity, and high fracture toughness to the material. Such properties make these materials excellent candidates for replacing traditional materials in a number of applications, such as high wear/corrosion resistant refractory shapes for molten metal transport and/or containment in industrial processes (the major area in which Fireline currently commercializes some of its TCON products), or for new applications, including light weight, high strength components for vehicle braking systems.

关键词：二氧化碳；催化剂；中心的运输与材料工程

查看摘要 索取原文[9页]

Many engineering systems can be characterized as complex since they have a nonlinear behaviour incorporating a stochastic uncertainty. It has been shown that one of the most appropriate methods for modelling of such systems is based on the application of Gaussian processes (GPs). The GP models provide a probabilistic non-parametric modelling approach for black-box identification of nonlinear stochastic systems. This chapter reviews the methods for modelling and control of complex stochastic systems based on GP models. The GP-based modelling method is applied in a process engineering case study, which represents the dynamic modelling and control of a laboratory gas-liquid separator. The variables to be controlled are the pressure and the liquid level in the separator and the manipulated variables are the apertures of the valves for the gas flow and the liquid flow. GP models with different regressors and different covariance functions are obtained and evaluated. A selected GP model of the gas-liquid separator is further used to design an explicit stochastic model predictive controller to ensure the optimal control of the separator.

关键词：非线性行为；高斯工程；控制器

查看摘要 索取原文[36页]

Mechanical systems with synchronization functionality have been used for many complex production tasks that cannot be carried out by a single machine and/or individual mechanism. Synchronized control approach is one of the key issues to achieve the synchronized motion of mechanical systems, which attracts more and more attention from academic research to applications. There are many types of mechanical systems that require synchronized control, which have different kinematics and dynamics. It is not an easy job to use a unified synchronized control algorithm for all mechanical systems. This chapter summarizes the work on synchronized control mainly developed by the authors and their colleagues. In the presentation it tries to use several classical mechanical systems to show the design philosophy of the synchronized control systems, and consequently establishes a reader/user-friendly framework with tutorial, survey, applications, and potential research expansion.

关键词：机械系统；同步控制；交叉耦合的错误

查看摘要 索取原文[25页]