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基于单片机PID算法的直流电机测控系统 总被引:17,自引:0,他引:17
为了实现直流电机测控数字化和精确可测控性,文章详细分析了以CygnalC8051F020为核心的电机测控系统硬件组成方案,提出了单片机PID算法的设计思想及其实现方法,并介绍了新型的基于MATLAB系统的PID控制参数整定方法。实践证明:设计的系统响应速度快,稳定性好,能提高直流电机的可测控性能。 相似文献
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针对传统的PID控制方式在对无刷直流电机系统控制时,存在精度低、抗干扰能力弱等不足,提出一种基于参数自适应模糊PID集成控制策略。首先,分析了无刷直流电机的数学模型,建立了基于双闭环调速系统的无刷直流电机控制系统模型,并对无刷直流电机双闭环系统转速进行模糊PID控制;然后,详细分析了建立该模糊自适应PID控制器的设计方法,提出一种优化模糊算子的优化方法,并运用仿真软件Matlab/Simulink实现了系统的设计和仿真;最后,在相同环境下,对比传统PID控制和模糊自适应PID集成控制两种控制策略的仿真结果。仿真结果表明,模糊自适应PID集成控制算法能使无刷直流电机双闭环控制系统具有更好的动、静态性能及较强的自适应能力。 相似文献
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直流电机的控制一般采用单片机或DSP作为核心控制器,集成度较低并且稳定性较差.文中介绍了一种基于NiosⅡ软核处理器的直流电机控制系统.利用SOPC平台设计并封装了PWM模块,在FPGA内嵌入Nios Ⅱ软核作为微处理器,借助光电编码器实现电机测速反馈.同时,采用数字PID算法实现对直流电机的PWM闭环调速控制,并最后对数字PID算法进行改进.实验表明,改进后控制系统的动态性能得到了很大的改善,而且整个系统的设计简单,集成度高,系统稳定,同时也在实际的应用中得到了验证. 相似文献
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在食品车间使用自动导引车进行物料运输可以节省人力,避免运输中产生交叉感染。基于食品车间环境,提出一种自动导引车测控系统的设计方案。该测控系统由不同的模块组成,通过各个模块间的相互作用实现自动导引车的正确行驶及站点停靠。由于食品车间环境比较特殊,系统采用磁导航传感器和光电传感器对路径进行识别。并且叙述了使用BangBang和PID相结合的控制算法在直流电机控制上的实现,以及模糊自适应PID算法在舵机控制上的应用。 相似文献
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This article describes the rationale for the multiphase creative problem solving process, and reports the findings from an empirical investigation conducted to facilitate the problem solving of managers. The ideational skills of the managers were assessed before and after training in a complete process of creative problem solving, along with their ideational attitudes, creative problem solving style (i.e., generator, conceptualizer, optimizer, or implementor), and evaluative skill (i.e., ability to recognize original ideas). The most important findings indicated that the training had a significant impact on the evaluative accuracy of the managers. They were significantly more accurate in their judgments about original ideas after training, both in their identification of original ideas and their recognition of unoriginal ideas. After training, the managers also gave more solutions and more original solutions to problems. Finally, several variables (e.g., the “preference for active divergence” attitude, and the conceptualizer process style) seemed to moderate the impact of training. Training was therefore effective, with specific effects that can be predicted from pre-training individual differences in attitudes and process style. 相似文献
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The deep connection between the Burrows–Wheeler transform (BWT) and the so-called rank and select data structures for symbol sequences is the basis of most successful approaches to compressed text indexing. Rank of a symbol at a given position equals the number of times the symbol appears in the corresponding prefix of the sequence. Select is the inverse, retrieving the positions of the symbol occurrences. It has been shown that improvements to rank/select algorithms, in combination with the BWT, turn into improved compressed text indexes. 相似文献
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为提高高等院校的管理水平和决策水平,充分利用校园网资 源,开发了高等院校行政财政分析与决策系统。解决了诸如数据的动态查询、自动生成报表 、网络环境下数据共享等技术问题,具有网上数据共享、图形界面友好和安全的保密措施等 特点。 相似文献
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Harshavardhana P. Jonckheere E. Silverman L. 《Automatic Control, IEEE Transactions on》1984,29(8):744-746
A new method of stochastic model reduction has recently been introduced by Desai et al. [1], [2]. The stability of the reduced order model has not previously, been considered. In this paper, we show that the stability of the reduced order model follows directly from the results of Pernebo and Silverman [3]. It is also shown that the reduced order model is minimal, in the controllability/observability sense. The relevance of this notion of minimality to stochastic minimality is made clear. 相似文献
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