共查询到20条相似文献,搜索用时 140 毫秒
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介绍了一种基于单片机STC90C58RD+和温度传感器DS18B20的饮料机调温控制系统,硬件由单片机、电源电路、温度传感器、按键电路、H桥电路、OLED显示电路、负载驱动电路等部分组成,软件采用C语言编程,实现温度采集、显示、报警和报警限设置等功能.经过样机测试,该饮料机调温控制系统操作简单,散热良好,运行稳定,可实... 相似文献
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介绍了电子节气门控制系统的基本原理,对控制系统涉及的电源模块、角传感器信号处理、A/D转换、执行控制模块和H桥电动机驱动等部分的电路进行了分析和设计,为电子节气门控制系统总成的设计提供了硬件支持。 相似文献
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Narayan Purohit 《世界电子元器件》2011,(5):44-46
在上世纪60年代,汽车业将注意力转向寻找能够保证驾驶者和乘客安全的创新方法。结果如何呢?出现了缓冲方向盘和仪表板、座椅安全带,以及其后的安全气囊和电子稳定性控制系统。自那时起,汽车工程师便一 相似文献
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基于SG3525控制的车载电源设计 总被引:3,自引:0,他引:3
介绍了SG3525脉宽调制器的内部结构和控制特性,给出了利用PWM原理设计的一种汽车触摸屏的电源设计方案,该方案采用推挽方式并利用SG35X芯片的关闭功能设计了一个过流检测电路,输出部分则采用TL431采样稳压来有效防止过流或过压对控制系统的危害.本电源可用来在汽车上代替24V蓄电池,而且性能良好. 相似文献
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过去十年中,汽车内部的电子产品得到了快速普及,数量增加近一倍,与此同时,复杂性也在日益提高,仪表板显示控制系统已经成为驾驶员/乘客实施控制的计算机化神经中枢,摄像头、传感器、诊断功能、高级驾驶员辅助系统(ADAS)、信息娱乐功能等大大增 相似文献
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本设计系统地介绍了步进电机驱动电路控制系统的组成、设计方案、电路原理等一系列的设计过程。步进电机驱动电路控制系统是以AT89C51单片机作为控制核心,步进电机为控制对象,运用汇编语言编程实现系统的各种功能。该系统由单片机最小系统、步进电机驱动模块L298、显示电路、4*4键盘电路四大部分组成。电路具有性能稳定、成本低廉等优点,有较好的应用价值。本文通过对步进电机驱动电路控制系统的设计与研究,从而理解步进电机在各种装置中的运行模式和工作状态的实现。 相似文献
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本文介绍了一种以单片机为控制核心、超声波测距为主要技术的汽车倒车防撞系统。本项设计的外围电路比较简单,容易实现。适合用在汽车倒车防撞的系统中。实践证明,该控制系统提高了汽车防撞系统运行的可靠性和自动化水平,减少了系统的危险系数。 相似文献
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此次设计主要完成方形和圆形玻璃的打磨机器人控制系统设计,主要包括控制系统的主电路设计、控制电路设计、控制系统控制程序设计、组态界面的编程与组态以及光电编码器的选型与应用.本次设计一种基于PLC的玻璃打磨机器人控制系统.硬件方面:系统采用PLC为中心控制器,系统的操作控制、实时数据的采集和动作过程的监视、各种参数的显示和设定,由挂接在PLC上的人机界面来实现.软件方面:根据设计的思想进行了实现系统功能的梯形图的设计,并利用组态软件编程软件进行编程,它可以方便地在Windows环境下对PLC进行编程、调试、监控,且编程方便、快捷. 相似文献
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A knowledge-based (expert) system (KBS) approach to power electronic circuit design is presented. The system, a power electronics and control tool, designated PECT, is written using Smalltalk-80, which integrates the artificial intelligence techniques of production rules for high-level knowledge representation. PECT embraces elements of power circuitry design and contains such features as selection of the circuit configuration, control facility, and power device best suited to a given application. It is interfaced with HSPICE, the commercial version of a general-purpose circuit simulation package, and a semiconductor power device library. Data retrieved from this library is converted into an object-oriented representation database. Analytical hierarchy process reasoning is performed on this data to aid the device selection process. System architecture as well as target design realization process are detailed. The criteria of development and the factors and requirements in building the PECT are also included. An example simulation is given representing a buck-boost converter using a gate turn-off thyristor (GTO) switch model 相似文献
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This paper develops a new series resonant (current resonant) DC link inverter with a voltage clamped circuit. The proposed circuit has a fixed pulse frequency operation. The fixed pulse frequency at 20-50 kHz enables the system to work without audible noise, and to involve the much smaller-sized DC inductance and output capacitors compared with hard-switched current source inverters. The proposed circuit has a voltage clamped circuit which could control the voltage stress of the switches. In this paper, explanations of the new circuit configuration, the simulation, design considerations, and some experimental results are included 相似文献
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《Microwave Theory and Techniques》1978,26(12):945-951
A 1.6-Gb/s 16-level superposed APSK modem using a newly developed baseband signal-processing coherent demodulator is described. ln the modulator, the superposing modulation method is adopted in which two QPSK carriers having different levels are superposed so that the combined signal forms a 16-level APSK carrier. Sixteen signal points are arranged in lattice form on the signal space. In the demodulator, a newly developed carrier recovery loop is adopted in which quantizing error signals are detected in the process of data regeneration; they are used for generating the phase error signal to control a VCO. The principles of operation and theoretical analysis of this carrier recovery loop is described, through which it is shown that the recovered carrier has inherently low-pattern jitter power. Furthermore, it features a very simple circuit configuration. The circuit configurations of an experimental modem and some important test results are deseribed in detail. It is shown that the modem has improved performance characteristics in such a high-speed region as 1.6 Gb/s while its circuit configuration is much simplified. 相似文献