Control Method for Sampled-Data Systems with Multiple Channels Based on Deadband-Triggered Scheme

A new deadband-triggered scheme is proposed to investigate the control problems for sampled-data systems with multiple transmitting channels. Sampled-data systems simultaneously contain continuous-time and discrete-time signals, which make the systems hybrid. In the sampled-data systems with multiple channels, the every state signals are transmitting at different channels. The deadband communication constraint is adopted to reduce the usage of communication resources. When the difference between the previous value and the most present value is lager than a given threshold of deadband, then the node of channels transmits the most present value. Furthermore, by use of Lyapunov functional method and input delay approach, the new stability analysis and stabilization conditions for the sampled-data with multiple channels on the basis of deadband-triggered scheme are proposed. Numerical simulations and experiments show the validity and usefulness of the derived conditions. The proposed deadband-triggered scheme is beneficial to further reduce the load of the communication data.</p

Guaranteed cost control of networked control systems under limited communication capacity and variable sampling

The problem of guaranteed cost control for the networked control systems (NCSs) with time-varying delays, time-varying sampling intervals and signals quantization was investigated, wherein the physical plant was continuous-time one, and the control input was discrete-time one. By using an input delay approach and a sector bound method, the network induced delays, quantization parameter and sampling intervals were presented in one framework in the case of the state and the control input by quantized in a logarithmic form. A novel Lyapunov function with discontinuity, which took full advantages of the NCS characteristic information, was exploited. In addition, it was shown that Lyapunov function decreased at the jump instants. Furthermore, the Leibniz-Newton formula and free-weighting matrix methods were used to obtain the guaranteed cost controller design conditions which were dependent on the NCS characteristic information. A numerical example was used to illustrate the effectiveness of the proposed methods

Gear shifting quality detecting device

本发明涉及换挡器质检领域，具体地说是一种适用于多种类型换挡器质量检验的换挡器质量检验装置，包括底座、工作机架、机械手组件、前端固定机构、后端固定机构、LED插座组件和提挡手柄组件，其中两个底座呈直角设置，在底座之间的直角端设有机械手组件，底座上均设有工作机架，工作机架上均设有前端固定机构和后端固定机构，换挡器通过前端固定机构和后端固定机构支承，在前端固定机构上设有LED插座组件和提挡手柄组件，在后端固定机构上设有滑动组件，在滑动组件上设有测量换挡器拉锁行程的直线位移传感器，机械手组件包括六轴机器人和用于检测换挡器摆杆受力的末端关节连接力检测组件。本发明适用于多种类型换挡器检测，测试准确且效率高

Shifter pulling core rod detection device

本发明涉及换挡器质检领域，具体地说是一种换挡器提拉芯杆检测装置，包括工装底座、夹持组件、定位座、移动块组件、驱动装置和位移传感器，各个部件均安装在工装底座上，待检测的提拉芯杆工件呈杆状的前端通过所述定位座固定支承，所述提拉芯杆工件的尾端通过所述夹持组件夹持支承，所述移动块组件设置于提拉芯杆工件前端，所述移动块组件通过所述驱动装置驱动移动，所述提拉芯杆工件内的芯杆弹簧通过所述移动块组件移动压缩，在所述移动块组件上设有用于检测弹簧力的力传感器，用于检测芯杆弹簧移动量的位移传感器与所述移动块组件相连。本发明能够快速准确地检测出芯杆弹簧是否合格以及O型圈和电磁铁组件是否漏装错装，检测结果准确可靠。</p

一种激光三角位移传感器及其测量方法

本发明涉及一种激光三角位移传感器及其测量方法，包括以下步骤：激光器发射激光束至反射镜，反射镜将激光束反射至物体表面；经物体表面反射的激光束通过透镜聚焦，使聚焦之后的激光束在位置传感器接收面形成光斑；PSD传感器进行光电转换，并通过信号处理模块转换成表示物体位置的信息。本发明主要针对空间尺寸狭小的孔类零件、平行平板或其他复杂机械结构的内尺寸测量。其外形尺寸小，具有良好的通用性、便携性，可实现微小尺寸的高精度、高效率测量

一种激光三角法位移传感器的标定方法

本发明属于光电测量领域中的信号处理部分，具体为一种激光三角法位移传感器的标定方法，主要用于激光三角法位移传感器使用前的标定。本发明针对基于PSD的激光三角位移传感器的精密标定问题，提出了一种多元自适应卡尔曼滤波与非均匀B样条曲线拟合相结合的标定方法。多元自适应卡尔曼预处理算法减小了初始数据对滤波结果的依赖，其数据处理效果优于经典卡尔曼滤波方法；在进行曲线拟合标定时，非均匀B样条标定误差较小，优于同类算法，可以实现位移传感器的精密标定

Design and Implementation of Automatic Assembly Mechanism for Bushing and Pin of Shifter DQ GEN 2

By analyzing the assembly process of the bushing and pin, an automatic assembly mechanism for bushing and pin of Shifter DQ GEN 2 is presented with assembly mechanism for bushing, grease smearing machine (grease smearing machine for bushing, grease smearing machine for shift lever cage, grease smearing machine for the hole), assembly mechanism for pin as main parts. This machine uses PLC and touch screen as control core, which has achieved the assembly automation on assembly process of bushing and pin in shifter unit, improved automation level and production efficiency, reduced rejection rate

未知应用环境下光电信号的反馈堆叠滤波方法

本发明涉及光电测量领域，具体说是未知应用环境下光电信号的反馈堆叠滤波方法。包括以下步骤：采集光电信号，建立光电信号训练集；建立反堆叠学习算法模型，通过采集的光电信号训练该模型；将实时采集的光电信号通过训练后的反堆叠学习算法模型过滤，得到滤波后的光电信号。本发明针对现有数字滤波方法不能充分利用某些应用场景下已知的目标真值、对被处理数据样本数目要求特殊等缺陷，采用神经网络学习方法搭建模型进行数据训练并预测的思路，提出了以ELM为基本预测模型的反馈堆叠学习算法(FsELM)。针对不同应用环境下的随机噪声干扰，采用FsELM算法加强了对信号在不确定环境下的预测能力，提高了随机噪声干扰下的预测精度

Large bearing ring cylindricity measuring instrument

本发明涉及轴承圆柱度测量仪，特别涉及一种大型轴承套圈圆柱度测量仪。包括伸缩表架、基础平台、数控气浮平台、安置基座、缓冲装置及Z轴立柱，其中安置基座和缓冲装置沿周向间隔交替地设置于基础平台上；数控气浮平台设置于基础平台上；Z轴立柱设置于数控气浮平台上；伸缩表架设置于Z轴立柱上；数控气浮平台用于驱动伸缩表架旋转，从而实现放置于安置基座上的轴承套圈的圆柱度测量。本发明通过非接触测量方式在大型轴承圆柱度测量中的实现形式，避免因接触式测量影响测量杆稳定性，从而保证测量准确

Automobile actuator zipper mounting station

本发明涉及汽车执行器装配技术领域，具体地说是一种汽车执行器拉锁安装工位，包括架体、执行器主体定位机构和卡扣压装机构，执行器主体定位机构和卡扣压装机构均设于所述架体中部的台面上，所述卡扣压装机构包括压装气缸、卡扣抓取工装和支撑组件，执行器主体设于所述执行器主体定位机构中，与执行器主体连接的拉锁前端设于卡扣压装机构中的支撑组件上，卡扣设于卡扣抓取工装中，且所述卡扣抓取工装通过压装气缸驱动升降。本发明可以适应不同产品型号执行器的拉锁卡扣压装，并且提高了装配质量和装配效率