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Oral English pronunciation evaluation system based on pid algorithm

Procedia Computer Science 2025年 261卷 1043-1049页

作者： Xiaozhen Wang Shandong Agriculture and Engineering University Jinan 250100 China

In order to solve the problem of systematic pronunciation bias caused by negative transfer effect of mother tongue in oral English teaching, this study proposed an intelligent calibration system based on ZN tuning pid control algorithm. By constructing multi-modal speech processing architecture, the system integrates dynamic time regulation algorithm and hidden Markov model HMM to realize phoneme boundary detection, and adopts improved pid controller to dynamically compensate pronunciation errors. Hardware design integrates high-precision voice sensing sensor and Harvard architecture digital signal processor (DSP), supporting 16bit fixed-point operation and 100MHz real-time processing capability; At the software level, Viterbi equalization algorithm and Sigmoid function calibration mechanism are introduced to effectively solve the zero-probability event problem caused by sparse corpus data. The experiment builds 13,500 speech samples based on the Spoken Arabic Digit dataset. The experimental results show that the error detection accuracy of the system is improved by 15.6%-25.8% compared with the traditional scheme, and the calibration quality score is improved by 12.3%-23.1%. The comparative study shows that the ZN tuning pid algorithm is significantly superior to the traditional pid and fuzzy pid schemes in the core indexes of comprehensive performance evaluation, overshoot and adjustment time, which verifies the innovative application value of control theory in the field of speech calibration.

关键词： pid algorithm Oral English pronunciation Dynamic time warping

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pid algorithm used for DC Motor Control 24

PID Algorithm used for DC Motor Control

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24th IEEE International Symposium on Design and Technology in Electronic Packaging (SIITME)

作者： Taut, M. A. Chindris, G. Pitica, D. Tech Univ Cluj Napoca Dept Appl Elect Cluj Napoca Romania

ISBN: (纸本)9781538655771

This paper aims to present the effects of a pid algorithm controller in a closed loop feedback system. Validation of the results is highlighted by calculating the position of a DC motor in a closed-loop system. The importance of this work comes precisely from the need to test and show the responses of such a system as accurately as possible in order to achieve the desired performance in real time. Over the years, due to the growth of the DC motor market, the need to implement control algorithms and test these devices in a more realistic way through mathematically models has been of the utmost importance, showing also the need for research enterprise. Due to these considerations and, of course, to a technological evolution that contemporary industry is subject to, the need to test such systems is imperative, being present and accepted at the highest standards. Early identification of design problems, repeatability of tests, reduction of development costs and shortened validation process are some of the benefits of this testing and control system.

关键词： pid algorithm DC Motor Close-loop pid DC Motor control

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Modulator Bias Control Based on Bi-pid algorithm for Optical Time and Frequency Transmission

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IEEE PHOTONICS TECHNOLOGY LETTERS 2024年第2期36卷 75-78页

作者： Zhao, Zhuoze Wang, Zhaohui Gao, Hao Dong, Jiameng Cheng, Jiahui Zhang, Jie Chen, Ziyang Yu, Song Luo, Bin Guo, Hong Beijing Univ Posts & Telecommun State Key Lab Informat Photon & Opt Commun Beijing 100876 Peoples R China Peking Univ State Key Lab Adv Opt Commun Syst & Networks Sch Elect Beijing 100871 Peoples R China Peking Univ Ctr Quantum Informat Technol Beijing 100871 Peoples R China

To resist the bias drift of the Mach-Zehnder modulator (MZM), we proposed and demonstrated a dither-free bias control method based on the bidirectional proportion integration differentiation (Bi-pid) algorithm. We theoretically analyzed the characteristics of time and frequency signals and made the bias point stable at the null point and quadrature point through optical power feedback and harmonic component feedback, respectively. 726.6 km transmission experiments were conducted to measure the effectiveness of the proposed modulator bias control (MBC) method. The results demonstrated that the stability of the time-sync system with the proposed MBC was better than that of the traditional method in the long-term measurement, whose time deviation (TDEV) was 2.8 x 10(-12)@10(4) s. The frequency stability characterized by Allan deviation (ADEV), reaching 3.1 x 10(-17)@10(4) s, outperformed traditional methods as well.

关键词： Modulators extinction ratio bias control pid algorithm time and frequency transfer

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pid algorithm-based temperature control system for biological incubators 35

PID algorithm-based temperature control system for biologica...

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35th Chinese Control and Decision Conference (CCDC)

作者： Zhao, Shengkai Qian, Xiaolong Gong, Jun Northeastern Univ Sch Informat Sci & Engn Shenyang 142633 Peoples R China Northeastern Univ Sch Informat Sci & Engn Shenyang 142675 Peoples R China Northeastern Univ Sch Informat Sci & Engn Shenyang 26371 Peoples R China

ISBN: (纸本)9798350334722

In this paper, a temperature control algorithm based on parameter self-tuning is designed on the basis of traditional pid parameter control. The traditional pid algorithm is improved to solve the problems of difficult parameter adjustment, complex parameter setting and integral saturation, and to solve the problem of high precision temperature rise in the middle temperature range of various biological incubators. This work adopts pid control strategy and divides the algorithm design into several stage modules to realize multi-stage temperature control. Smith prediction is introduced to accelerate the stability, and parameter fitting schemes are designed for different types of bioincubators. The final validation results of this design are that the overshoot of various types of bioincubators is within 1 degrees C, the steady-state error is less than 0.2 degrees C, and the heating time is within 60 minutes to meet the heating requirements. This paper presents the implementation of the temperature control system of the bioincubator and the experimental verification of its related performance.

关键词： Biological incubator pid algorithm Multi-stage temperature control

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Thermionic Emission Controller with pid algorithm 23

Thermionic Emission Controller with PID Algorithm

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23rd International Conference on Mixed Design of Integrated Circuits and Systems (MIXDES)

作者： Kania, Bartosz Sikora, Jaroslaw Lublin Univ Technol Dept Automat & Metrol Lublin Poland

ISBN: (纸本)9788363578084

The reported digital thermionic emission current controllers use floating voltage sources which produce noise current and consequently decrease the quality of an electron beam. The implementation of digital control in an electron source biasing system without floating sources gives the average value of the electron emission current standard deviation of 0.015%. The described controller has been developed in order to investigate the properties of new hot-emitters.

关键词： thermionic emission electron source biasing system pid algorithm

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A Method of Fast Application of the Fuzzy pid algorithm Using Industrial Control Device

A Method of Fast Application of the Fuzzy PID Algorithm Usin...

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11th International Conference on Artificial Intelligence and Soft Computing (ICAISC)

作者： Jaszczak, Slawomir Kolodziejczyk, Joanna Westpomeranian Univ Technol Dept Comp Sci Szczecin Poland

ISBN: (纸本)9783642293467

Linear pid algorithms commonly used in industry might perform insufficiently when controlling nonlinear operating systems. Solutions such as the fuzzy pid controller can exchange the linear pid controller because it develops a nonlinear control surface. The main advantage of the fuzzy pid controller is the ability to adjust to a controlled plant by the rule based modification, nonlinear membership function application and inference rule selection. However, the tuning process is one of the most difficult steps in the fuzzy pid controller designing and therefore discourages most practical applications. A simplification of the fuzzy pid controller tuning process is described in this article. The presented methodology allows fast transformation from a classic pid algorithm into a fuzzy pid algorithm. A proposed algorithm is tested on a programmable PLC which is a typical industrial implementation platform. A temperature stabilization is chosen as the controlled plant and some experimental results are then described. In conclusion authors suggest directions for similar real time fuzzy pid algorithm implementations.

关键词： Rapid Prototyping Control Systems Fuzzy Control pid algorithm Embedded Input/Output Functions

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Design of Heave Compensation Control System Based on Variable Parameter pid algorithm 30

Design of Heave Compensation Control System Based on Variabl...

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30th Chinese Control and Decision Conference (CCDC)

作者： Mei Tianxiang Yang Yi Chen Jianbo Zhang Guihong Yang Yuanpei Wang Jianshan Gu Haiqin Yang Hui Nantong Univ Coll Elect Engn Nantong 226019 Jiangsu Peoples R China

ISBN: (纸本)9781538612446

In this paper, pid control system based on variable parameters is designed to solve the problems of wave impact On ships and modeling errors in the control system of large-scale ships recharging supply *** mathematical model of heave compensation control system is established and the system is modeled and simulated by MATLAB / Sintulink *** results show that the use of variable parameter ND control can well consider the uncertainties and conditions at sea, to achieve slight deviation of the set speed and the actual *** then it can realize the speed compensation,.The experimental results show the effectiveness of this controller.

关键词： pid algorithm Control system Heave compensation MATLAB simulation

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Application of fuzzy control pid algorithm in temperature controlling systems

Application of fuzzy control PID algorithm in temperature co...

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International Conference on Machine Learning and Cybernetics

作者： Chen, JX Li, W Henan Univ. of Sci. and Technology 471003 China

ISBN: (纸本)0780378652

The pid controllers are used in the existed temperature controlling systems. But when the parameters of the controlled object are changed, the pid controllers have difficulty in enabling the two indexes, hyper harmony and the time of transition to reach the optimum state In this paper, a kind of fuzzy parameter pid algorithm is advanced. It can identify the parameters of the pid controller in real time on line. This enables that the controllers can adapt to the parameters' change of the controlled object and it can also realize the rapid parameters' adjustment in the multi points controlled system. When applied in the system controlled by the cellular strip furnace, its control effect is better than that of the normal pid controller. This proves the availability of this method.

关键词： fuzzy control pid algorithm adaptive fuzzy rule

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An Improved Control Method Based on pid algorithm

An Improved Control Method Based on PID Algorithm

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2nd IEEE International Conference on Advanced Computer Control

作者： Du Jingqing Gao Shiqiao Yao Fenglin Luo Chuang Liu Haipeng Beijing Inst Technol State Key Lab Explos Sci & Technol Beijing 100081 Peoples R China

ISBN: (纸本)9781424458479

Based on the pid(Proportional-Integral-Differential) control algorithm, by analyzing the control system with control variable varying in the form of arbitrary function, a simple control method with control variable varying in the form of arbitrary function was presented, i.e. pid control algorithm with set value which is constant in small zone. The paper introduced the mathematical model and the parameter tuning method of the pid control algorithm briefly, analyzed and the selection principle of the parameters of the advance control, lag control, ideal control. And used the MATLAB to simulate and verify this algorithm, the simulation results are satisfactory. Tests were carried out on different equipments and in different experimental conditions;results of the experiment are successful. Then this method is applied to the practical engineering practice, proves that it makes remarkable effects on the practical utilization.

关键词： pid algorithm function control algorithm control quantum MATLAB simulation

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Global Maximum Power Point Tracking of PV Arrays Under Partial Shading Conditions Using Improved PSO and pid algorithm

Global Maximum Power Point Tracking of PV Arrays Under Parti...

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Chinese Automation Congress (CAC)

作者： Zhong, Ningfan Zhang, Meng Ma, Mingyuan Shandong Univ Sci & Technol Coll Elect Engn & Automat Qingdao Peoples R China

ISBN: (纸本)9781728176871

Under the condition of partial shading, the output characteristic curve of the PV system will show a global maximum power peak(GMPP) and multiple local maximum power peaks(LMPP). Since the traditional method can only track GMPP, the traditional method will not be suitable for partial occlusion. Under the dynamic partial shadowing conditions (PSCs), using traditional methods to track dynamic GMPP will become more difficult. This paper proposes a compound control algorithm that combines improved particle swarm optimization (PSO) algorithm with pid algorithm. Based on the traditional PSO, this paper uses adaptive inertia weight to make the algorithm jump out of the LMPP and search for the GMPP quickly and accurately. Meanwhile, pid controller is used to reduce system overshoot and make the system more stable. Compared with the traditional PSO algorithm, the proposed method has better tracking effect under static and dynamic PSCs.

关键词： PV system partial shadowing conditions(PSCs) pid algorithm particle swarm optimization(PSO) algorithm

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