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红外成像制导仿真图像实时生成系统设计与研制 总被引:2,自引:1,他引:1
为了更加逼真地模拟红外目标及战场背景,基于图像生成及显示计算机、硅桥MOS电阻面阵控制计算机系统、128×128 MOS电阻阵列及电源、实时通讯反射内存网络(反射内存卡及光纤)、目标及背景红外图像实时生成软件和MOS电阻面阵控制软件等6部分组成了某红外图像实时生成系统;该系统采用的高速光纤反射内存实时通讯网络、超大规模D/A控制板等使得帧刷新频率达到了200 Hz以上、长线传输不受环境电磁干扰、更易于向256×256MOS电阻阵列扩展等,同时保证了在五轴转台的恶劣环境下可靠工作. 相似文献
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设计了一种基于CAN总线的圆网印花控制系统,重点设计内容包括基于单片机的控制板以及基于CAN总线的接口电路及相应通讯程序,该系统突出了通讯方面的高效性,提高了整个设备的工作性能,实验结果也验证了该控制系统的可靠性。 相似文献
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设计了一种基于AT89C51单片机的SC-01型机电系统控制板。该控制板由AT89C51单片机、程序存储器模块、A/D模块、D/A模块和串行通信模块组成。这里详细介绍了各扩展模块电路的工作特性,并分别对该控制板的CPU模块、D/A模块、A/D模块、串口通信模块进行了实验研究,结果显示该控制板能稳定地实现预期功能。该控制板功能齐全、结构紧凑、经济实用,可以应用于工控领域,也可以用于培训和教学实验。 相似文献
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针对电梯逻辑开发存在现场调试难度大、电梯知识培训成本高等问题,提出一种基于电梯控制板的节能高效的电梯仿真方法。分析了电梯系统的功能和运行规律,设计了监控软件和硬件,建立了电梯仿真实验平台。监控软件模拟电梯操控面板和服务器,可监控电梯状态,硬件根据实际电梯控制板运行条件设计。实验证明,该仿真系统可监控电梯状态,实现电梯操控、电梯故障仿真,仿真真实性较传统仿真平台有明显提高,提高电梯逻辑开发效率,降低培训成本。 相似文献
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本文提出了一种新型感应电动机调速系统的线性化解耦控制方法,以定子磁链和电磁转矩作为感应电动机数学模型的输出,给出了感应电动机逆系统的动态方程,利用得到的逆系统将调速系统解耦为电磁转矩和定子磁链两个线性子系统。在此基础上,对整个调速系统进行了综合,给出了调速系统的原理框图,实现了电磁转矩和定子磁链的动态解耦控制。仿真实验验证了理论分析的正确性和控制方案的可行性。 相似文献
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本文介绍了以STC12C5A60S2单片机和MP3解码芯片AU6850C为核心的智能家居背景音乐播放模块的硬件及软件设计。该模块提供了USB和SD卡的接口,具有液晶显示、串口通讯及断电记忆功能,智能家居控制板可通过对音乐播放模块的控制实现背景音乐的播放。 相似文献
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基于单片机的红外通讯设计 总被引:9,自引:0,他引:9
本文介绍一种基于单片机实现的红外通讯系统。该系统具有复杂的红外通讯协议,能够实现面向字节的红外数据通讯,并具有良好的抗干扰能力和传输通道扩展能力。 相似文献
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感应电动机的一种新型速度控制系统已被开发出来,该系统能够实现快速的弱磁控制,且有优越的响应和稳定性。在这一控制方法中,定子电流在转差频率控制的基础上作为一个矢量进行控制。更为特别的是,在已知电动机参数的基础上,感应电动机定子电流的给定值是从相应的磁通和转矩给定值计算出来的,并用来控制实际的定子电流。 相似文献
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Application of electrically peaking hybrid (ELPH) propulsion systemto a full-size passenger car with simulated design verification 总被引:1,自引:0,他引:1
An electrically peaking hybrid electric (ELPH) propulsion system is being developed that has a parallel configuration. A small engine is used to supply power approximately equal to the average load power. The operation of the engine is managed by a vehicle controller and an engine controller such that the engine always operates with nearly full load-the optimal fuel economy operation. An induction motor is used to supply the peaking power required by the electrically peaking load. The motor can also absorb the excess power of the engine while the load power is less than the peak. This power, along with the regenerative braking power, can be used to charge the batteries on board to maintain the battery state-of-charge (SOC) at a reasonable level. With the electrically peaking principle, two control strategies for the drive train have been developed. One is called maximum battery SOC control strategy, by which the engine and electric motor are controlled so that the battery SOC is maintained at its top level as much as possible. This control strategy may be used in urban driving in which accelerating and decelerating driving is common and high-battery SOC is absolutely important for normal driving. The other control strategy is called engine turn-on and turn-off control by which the engine is controlled to operate in a turn-on and turn-off manner. This control strategy may be used in highway driving. Based on the ELPH principle and the drive train control strategies, a drive train for a full-size five-seat passenger car has been designed and verified using the V-ELPH computer simulation package 相似文献
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A naturally commutated six-pulse cycloconverter working in the inverting mode is used to feed power to a single phase AC motor at 400 Hz. The motor is connected at the input side of the cycloconverter while the three-phase mains is connected at its output. Three-phase mains feeds power to the input side of the cycloconverter which is arranged as a tuned load at 400 Hz. The effect of the single-phase induction motor on system performance is discussed. The principle of voltage and frequency control for proper operation of the induction motor is presented. The results are experimentally verified. 相似文献
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介绍了以单片机AT89S52为控制核心的智能简易车辆系统设计方案。系统根据角度传感器检测的信号,控制小车在跷跷板上做相应运动,其中采用角度传感器感应板面水平角是否为零,确保小车达到平衡。同时采用反射式光电传感器感应板面引导线,保证小车不脱离轨道,并指引小车在规定区域内顺利爬上板面。系统显示装置采用RT1602液晶显示器,能够实时显示行距、时间;小车动力源采用步进电机,并用STA475集成晶体管芯片构成的桥式电路对其驱动,电源直接由12 V蓄电池供电,单片机根据各模块检测的信号作出判断,保证小车正常行动。 相似文献
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This paper demonstrates the performance of a metal‐substrate power module with multiple fabricated chips for a high current electrical application, and evaluates the proposed module using a 1.5‐kW sinusoidal brushless direct current (BLDC) motor. Specifically, the power module has a hybrid structure employing a single‐layer heat‐sink extensible metal board (Al board). A fabricated motor driver IC and trench gate DMOSFET (TDMOSFET) are implemented on the Al board, and the proper heat‐sink size was designed under the operating conditions. The fabricated motor driver IC mainly operates as a speed controller under various load conditions, and as a multi‐phase gate driver using an N‐ch silicon MOSFET high‐side drive scheme. A fabricated power TDMOSFET is also included in the fabricated power module for three‐phase inverter operation. Using this proposed module, a BLDC motor is operated and evaluated under various pulse load tests, and our module is compared with a commercial MOSFET module in terms of the system efficiency and input current. 相似文献
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Biswas Sujit K. Sathiakumar S. Vithayathil Joseph 《Industrial Electronics, IEEE Transactions on》1987,(4):441-446
This paper describes a method of adjusting the stator power factor angle for the control of an induction motor fed from a current source inverter (CSI) based on the concept of space vectors (or park vectors). It is shown that under steady state, if the torque angle is kept constant over the entire operating range, it has the advantage of keeping the slip frequency constant. This can be utilized to dispose of the speed feedback and simplify the control scheme for the drive, such that the stator voltage integral zero crossings alone can be used as a feedback for deciding the triggering instants of the CSI thyristors under stable operation of the system. A closed-loop control strategy is developed for the drive based on this principle, using a microprocessor-based control system and is implemented on a laboratory prototype CSI fed induction motor drive. 相似文献
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Linear induction motors being proposed for high-speed ground transportation may have their primaries carried on board the vehicle or embedded in the guideway. This paper evaluates various aspects, such as power requirements, power switching and controls, utilization factor, efficiency and cost, etc., for these two alternatives and provides the basic format on which relative merits of various systems can be readily evaluated. The analysis shows that, in the fixed primary system, it is economically impractical to energize sections of the roadbed substantially longer than the vehicle. Even when the primaries in the roadbed are energized in sections of minimum length, the cost of the linear induction motor and additional switching and power network for the fixed primary system is an order of magnitude higher than that for the moving primary system. 相似文献
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This paper presents an improved fuzzy logic controller (FLC) for an interior permanent magnet synchronous motor (IPMSM) for high-performance industrial drive applications. In the proposed control scheme for high-speed operations above the rated speed, the operating limits of IPMSM are expanded by incorporating the maximum torque per ampere operation in constant torque region and the flux-weakening operation in constant power region. The power ratings of the motor and the inverter are considered in developing the control algorithm. A new and simple FLC is utilized as a speed controller. The FLC is developed to have less computational burden, which makes it suitable for real-time implementation, particularly at high-speed operating conditions. The complete drive is implemented in real-time using digital signal processor (DSP) controller board DS 1102 on a laboratory 1-hp IPM motor. The efficiency of the proposed control scheme is evaluated through both experimental and computer simulation results. The proposed controller is found to be robust for high-speed applications 相似文献
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A novel control technique for sensorless vector control operation of a double-inverter-fed wound-rotor induction motor is presented. Two current controllers control the stator-side currents based on a vector control algorithm. Another V/f-type flux and frequency controller controls the rotor-side frequency directly. A novel frequency command profile for the rotor-side controller is suggested to make this sensorless drive operation reliable and reduce dependence on motor parameters at any rotor speed. A complete inverter power flow analysis is presented to show that the drive can deliver full torque from 0- to 2-p.u. speed for either direction of rotation. Thus, double the rated power can be extracted from the induction motor without overloading it. The proposed algorithm allows the drive to start on-the-fly without any rotor transducer. Results from a prototype 50-hp drive are presented. 相似文献