模糊神经网络在坦克电传动控制器中的应用

文章介绍了将模糊神经网络用于电传动系统的速度控制器和模糊神经网络的实现,以及如何利用MATLAB中的神经网络工具箱对模糊神经网络进行训练。以MAT LAB/SIMULINK为仿真平台建立了电传动系统仿真模型,经仿真表明该系统的抗干扰能力强,满足电传动系统的设计要求。

多分部纸机传动控制器的研究

针对造纸机传动控制系统中不同型号变频器之间能否替代的问题,设计出一种多分部纸机传动控制器.传动系统可以用不同型号变频器组成,不论开环和闭环可以任意组合,克服了传统的控制方式中采用集成运算放大器构成模拟式速度链或伺服电动机联动速度链,其在运行时存在漂移、操作不便等缺陷.在实际造纸机传动系统设计中获得了广泛的应用,取得了良好的控制效果.

电气传动控制器局部干扰信号自动识别研究

为提高局部干扰信号自动识别的准确性,该文设计了一种电气传动控制器局部干扰信号自动识别方法。建立信号干扰模型,对干扰信号预处理,去除重复的干扰信号,提取信号特征,将信号傅里叶变换没确定信号的波动幅度,采用马尔科夫识别方法建立识别模型,模仿信号的活动轨迹,预测出每个时刻信号的状态,以此实现电气传动控制器局部干扰信号自动识别方法的设计。实验结果表明,所研究的电气传动控制器局部干扰信号自动识别方法在单音干扰下、多音干扰下、线性扫频干扰下一级噪声调频干扰下信号干扰识别准确度都较高,满足方法的设计需求。

DCS400直流传动控制器在彩涂机组中的应用

本文介绍了 DCS400全数字直流传动控制器的特点与功能,详细说明了 DCS400在我院设计的钢带彩涂机组直流传动中的应用。

基于PLC的钻机电气传动同步控制器优化设计

钻机电气传动系统在非稳态工况下容易出现低频振荡失真,降低钻机电气传动同步控制的效能。为此提出一种基于PLC的钻机电气传动系统转速控制方法。构建钻机电气传动系统控制的约束参量模型,采用负阻尼低频跟踪控制方法进行钻机电气传动系统的输出转速稳态调节,求得电机运行实际效率;进行钻机电气传动系统的输出自适应参量调节,得到钻机电气传动系统的输出控制参数。采用抗饱和反馈跟踪控制方法对钻机电气传动系统进行输出稳态调节,对参数进行解耦控制,实现钻机电气传动系统的同步控制优化。采用PLC进行钻机电气传动同步控制器的硬件设计。实验结果表明,采用该方法进行钻机电气传动系统同步控制稳定性、稳态性较好,功率输出增益较高。

用SST89C58实现烘燥机的多单元同步传动控制功能

介绍了采用新型，具有IAP功能的SST89C58单片机，实现了多单元同步传动控制，在分析具有卷绕及放卷单元的烘燥机同步传动特点的基础上，给出了控制系统的硬件原理图及软件框图，本控制系统具有较强的灵活性和通用性，无需在线测量卷绕及放卷单元的直径，可输出控制卷绕、放卷和恒速单元的同步模拟量控制信号，可对机台的车速在线调整，并能显示被测物的长度。

酒钢双边剪传动控制系统

本文简要介绍了酒钢双边剪的传动控制系统。

基于SAE J1939协议的柴油机传动箱测控装置

介绍了J1939协议的原理和帧格式,以及基于J1939协议实现柴油机、传动箱测控装置的总体设计思路;硬件设计方面介绍了以PIC18F458单片机为基础的J1939总线电路;软件部分主要论述了实现柴油机、传动箱控制器的方法及流程。

传动新秀——MOVIDRIVE“B”系列变频器

SEW-EURODRIVE公司最近宣布推出一款新型。MOVIDRIVE系列变频器产品。新的MOVIDRIVE“B”系列为澳大利亚的制造商和OEM客户提供了一个拥有理想功能和处理能力并且成本很低的应用型变频器。

Influence of Buffering Pressure Characteristics on Shift Clutch Engagement Process

The dynamic math model of shift clutch in engagement process was determined on the basis of hydraulic buffering valve and shift clutch of a power shift steering transmission. The influence of buffering pressure characteristic on shift clutch engagement process was analyzed. The study results could be used to the characteristics match of the shift clutch with the hydraulic system of the high speed tracked vehicle power shift steering transmission and the performance prediction.

Powertrain Torque Control Based on Torque Observer

To reduce shock during transmission gear shift, a transmission torque feedback closed loop control system is proposed based on the powertrain system model and a torque observer. The ignition time of engine was delayed to reduce transmission output shaft torque during gear shift. In contrast to traditional control method, the closed loop control system based on torque observer can obviously reduce the transmission output shaft torque during gear shift. It can be concluded that by way of torque feedback closed loop control, transmission shift shock can be reduced.

Anti-reverse rotation startup method for sensorless brushless DC motor

In order to start up the brushless DC motor （BLDCM） without reverse rotation and smoothly switch the running state of the motor, a novel startup and smoothly switching method for a sensodess BLDCM is presented. Based on the saturation effect of the stator iron, six short voltage pulses are applied to determine the initial rotor position and the rotor can be found within 60°. After that, a series of short and long voltage pulses are used to accelerate the motor and the variation of the response current is utilized to detect the rotor position dynamically. When the motor reaches a certain speed at which the back-electromotive force （EMF） method can be applied, all the power devices are turned off and the running state of the motor is smoothly switched at the moment determined by the relationship between the terminal voltage waveform and the commutation phases. The experimental results verify the feasibility and validity of the proposed method.

HIT anthropomorphic robotic hand and finger motion control

Nowadays many anthropomorphic robotic hands have been put forward. These hands emphasize different aspects according to their applications. HIT Anthropomorphic Robotic Hand (ARhand) is a simple, lightweight and dexterous design per the requirements of anthropomorphic robots. Underactuated self-adaptive theory is adopted to decrease the number of motors and weight. The fingers of HIT ARhand with multi phalanges have the same size as those of an adult hand. Force control is realized with the position sensor, joint torque sensor and fingertip torque sensor. From the 3D model, the whole hand, with the low power consumption DSP control board integrated in it, will weigh only 500 g. It will be assembled on a BIT-Anthropomorphic Robot.

Suboptimal reliable guaranteed cost control for continuous-time systems with multi-criterion constraints

The suboptimal reliable guaranteed cost control （RGCC） with multi-criterion constraints is investigated for a class of uncertain continuous-time systems with sensor faults. A fauk model in sensors, which considers outage or partial degradation of sensors, is adopted. The influence of the disturbance on the quadratic stability of the closed-loop systems is analyzed. The reliable state-feedback controller is developed by a linear matrix inequalities （LMIs） approach, to minimize the upper bound of a quadratic cost fimction under the conditions that all the closed-loop poles be placed in a specified disk, and that the prescribed level of H∞ disturbance attenuation and the upper bound constraints of control inputs＇ magnitudes be guaranteed. Thus, with the above muki-criterion constraints, the resulting closed-loop system can provide satisfactory stability, transient property, a disturbance rejection level and minimized quadratic cost performance despite possible sensor faults.

Experimental and theoretical study on vibration control of base-isolation with energy transducer

In order to evaluate the effects of structural control and energy transition for the base-isolation with energy transducer （BIET）, shaking table tests on a steel frame model （BIET system） with scale of 1：4 were conducted and the results were compared with the lead rubber beating （LRB） isolation system for the same model. Then numerical analysis of the system was carried out, in which the improved Wen analytic model was used to simulate the hysteretic law of transducers. The results show that the structural system can transform the partial earthquake energy to hydraulic energy ; furthermore, the effect of structural control can reach or be close to that of the LRB isolation system. The agreements between numerical analysis results and those of shaking table tests demonstrate the accuracy of the numerical model.

Neuron PI control for semi-active suspension system of tracked vehicle

A neuron proportion integration (PI) control strategy for semi-active suspension system of tracked vehicle was proposed based on its unique structure and the multiple and complex environment of the driving traffic. An adaptive genetic algorithm is used to optimize the parameters of the neuron PI controller. The simulation result of the neuron PI control for semi-active suspension system of tracked vehicle indicates that the vertical amplitude,pitch angle and vertical acceleration of the vehicle are well controlled. The root mean square (RMS) of the vertical amplitude decreases by 37.2%,and 45.2% for the pitch angle,38.6% for the vertical acceleration. The research of neuron PI control experiment for the semi-active suspension system of the tracked vehicle model mining in benthal indicates that the RMS of the weight acceleration vibrating along the vertical direction decreases by 29.5%,the power spectral density resonance peak of the acceleration of the car body decreases by 23.8%.

Application and testing of a vertical angle control for a boom-type road header

Automatic profiling control using a boom-type roadheader requires an understanding of horizontal and vertical swing angles of the cutting boom. In this study the vertical angle of the cutting boom is discussed. First, a vertical swing detection model for the cutting boom is established. Then, a kinematic analysis of the vertical swing mechanism is made and formulae describing the geometrical relationship between the vertical swing of the cutting boom and the telescopic length of vertical hydraulic lift cylinders and vertical swing angle of the boom are presented. Various factors such as complexity of the calculation model, the difficulty of installing the sensor and the cost are compared for two methods. Finally, directly measuring the vertical swing angle of the cutting boom with a tilt sensor is decided to be the more simple and effective method. The detection sensitivity and the vertical cutting error of a tilt sensor are studied. Vibration tests on an EBZ160 roadheader were performed in a coal mine. The characteristic vibration frequencies are analyzed. A design of a vibration isolation mount for the tilt sensor is presented. It makes the detection device work more reliably under conditions where vibration is present and lays a foundation for the implementation of an automatic roadhead cutter. A tilt sensor is installed on an EBZ160 and an EBZ200, and experiments have been done in a coal mine. The re- suits show that the experimental result is favorable and achieves the goal of automatic control of the vertical swing of the cutting boom.

Motion Capture for Puppet Control Using Integrated Sensor System

The paper aims to execute puppet without restrictions by controling puppet using robot. We controling puppet in the same way as the present puppet, but we perform this by robot. It offers more advantages and lessen the weak points. It needs various actions and expressions because of the nature of a puppet. The biggest problem which executes this is the ways to create a system. This thesis proposes motion capture of developed method with solution of this problem. So, we create various contents needed by puppet. In this part, developed method means a mixed method on the basis of optical system and magnetic system used mainly for the present method of motion capture. We lessen the weak points of each method and propoe solution of create motion for pupct by offering more advantages. So we solve difficulties of executing puppet and probable probkans when we execute puppet by using robot. The solution of this thesis is proven by applying control of puppet.

A MEMS stronglink with multi-try function used for PC startup in authentication system

The stronglink with muhi-try function based on MEMS technology and the PC startup in authentication system have been designed and fabricated. The generation principle and structure of UQS code are introduced, which consists of two groups of metal counter-meshing gears, two pawl/ratchet mechanisms, two driving micromotors and two resetting micromotors. The energy-coupling element is a photoelectric sensor with a circular and notched plate. It is fabricated using the UV-LiGA process and precision mechanical engineering. The PC startup authentication system is controlled by BIOS program, which is written into the chip according with special format. The program in BIOS output signals controls the running of stronglink to finish the process of authentication. The device can run more than 10000 times before a stop. The driving voltage is 12 V, and the normal decoding time is 3 s.

Sensorless Control of Switched Reluctance Motor Drive Systems

This paper presents a sliding mode observer for sensorless operation of SRM （switched reluctance motor） drive. Design of such an observer depends mainly on the nonlinear model of SRM. In this technique, neither extra hardware nor huge memory space are not required but it only requires active phase measurements. Furthermore, PI （proportional integral） and adaptive FLPI （fuzzy logic PI） controllers are suggested to operate individually along with the SMO （sliding mode observer） to cover a full speed range of sensorless controller. Both controller schemes operate in PWM （pulse width modulation） control mode. The proposed observer is implemented and tested using a digital signal processor. All results obtained with both simulation and experimental investigations corroborate the superior performance of the adaptive fuzzy logic controller （FLPI） when compared with those of PI controller.