The induction motor is one of the key hardware for the normal operation of mechanical equipment. However, due to the poor performance of the controller designed by the traditional method, it is easy to cause the drive control instability. Therefore, the induction motor drive control method based on random forest is studied. This method obtains in advance the working characteristics of induction motors in high and low temperature environments; considering the working characteristics, a new induction motor drive controller is designed based on the random forest algorithm; and the induction motor drive control is realized by setting fuzzy rules. The experimental results show that in the high temperature and low temperature test environment, the drive control method studied in this study has regularity in the control wave amplitude and the control effect is more stable. It can be seen that the random forest theory meets the requirements of this research.

目前在高等院校的教育教学中,工程训练课程是实践教学环节中一门不可缺少的课程,通过工程训练,能有效提高学生动手动脑、全面发展的能力,能促进学生对专业在应用方向和工程能力的认知.工程训练的教学改革主要包括其教学内容,教学方式等方面,不断提升学生的创新思维以及团队合作精神.本文主要就新工科背景下工程训练课程的改革与实践进行探讨,以期为相关学者带来一定参考.

Aiming at the problem that the transformer DC side voltage is affected by the voltage quality during the monitoring process, its monitoring performance is greatly reduced. In order to improve the monitoring effect of the transformer DC side voltage, a transformer DC side voltage monitoring model based on pattern recognition is designed. Pattern recognition based on the RMS method using DC voltage transformer discrete signal processing using a pure sinusoidal AC signal with the average RMS mathematical relationship, by calculating the average of the AC voltage, indirectly, of the DC voltage transformer Valid values. From the OPP-CI model that ignores the influence of the ZIB node and the OPP-CI model that considers the influence of the ZIB node, pattern recognition is used to establish the transformer DC side voltage OPP-CI model, and the transformer DC side voltage monitoring process design is combined to realize the transformer DC Monitoring of side voltage. The experimental results show that the error of the monitoring results of the proposed model is relatively low, indicating that the method can improve the monitoring effect of the transformer DC side voltage.

采用虚拟现实技术,通过Unity 3D软件构建虚拟世界,开发电气控制虚拟实践,并发布到Android游戏平台上.3D教学课件的应用,取得很好的实践教学效果.

虚拟现实技术在实践教学中的应用,是现代教育技术发展的一个飞跃;在Maya软件建模基础上,通过Unity3D软件构建虚拟世界,完成电气控制训练虚拟实践平台建设,取得了初步的研究成果.

非接触供电主要采用串联耦合谐振和并联耦合谐振实现能量的传递,谐振电路中L和C以静态的串联、并联形式连接存在,根据半桥变换器拓扑电路的特点,改变有极性电容为谐振无极性电容,在负载为电感的情况下,通过调节全控型开关工作频率,实现负载电感L与半桥电容C的动态并联谐振,从而完成能量的非接触传输.

Based on the research of the provincial key teaching research topic, combined with the training target of senior applied talents and "three major"education ideas under our university's great engineering background, this paper analyzes the importance of teaching staff construction, points out that to strengthen teach-ing staff construction is an effective way to improve practical teaching quality, and actively explores the methods to improve teaching staff construction, in order to meet the needs of school-running characteristics and talent cultivation.

本文以实际电气工程训练中摸索的教学方法和手段为依据展开讨论,浅谈如何提高实践教学效果.采用多元化的教学模式,在实际应用中成效显著.

This paper introduces the S7-300 series PLC on X62W type universal milling machine control system technical improvement methods,elaborated the X62W universal milling machine the basic structure and control requirements.Through PLC technology improvement improves the X62W universal milling machine electrical control system performance,and makes the control system hardware circuit is simplified,the work stability is more reliable,anti interference ability is enhanced,greatly improve the milling efficiency.

Safety is the first in both production or teaching during engineering training,so that alarm bells ringing is very important.This paper takes two trainings in engineering training for example.It includes experiences,specific rehabilitation programs and the results during equipment maintenance and equipment transformation.The first is the reform of lathe chuck cover electrical protection,and the second is the voltage transformation of electrical engineering training room.

Aimed at improving the disturbance rejection ability of the stable platform on the moving carrier,this paper proposes the stable control of disturbance observer with output observer by allowing for the mechanical resonant factors of stable platform servo system and describes the study of the loop structure,the input and output stability issues and the relationship between bandwidth and robustness of the disturbance observer.Simulation shows that LOS stabilization shows a precision of less than 0.04°,in the presence of the carrier moving at a maximum rate of 4（°）/s angular velocity in the case of sinusoidal signal movement with frequency of 5 Hz.Disturbance observer with output observer working,in the case of parameter perturbation,shows a better robust stability than feedback disturb observer.

Aim to the current shortcomings manual control system of greenhouse flowers and plants, designed of the temperature and humidity control system, introduced the system, working principle and structure in detail to the composition of the various parts of hardware and software components of the processes, PLC as the core of the system, chosen DS18B20 single-wire digital temperature sensor, IH3605 humidity sensors, digital to analog converter, digital display, auxiliary equipment, implemented the automatic control of the flower greenhouse temperature and humidity, had characteristic such as simple structure, high reliability, cost-effective, good temperature, to promote the value of a wide range and so on

This paper mainly narrated temperature and humidity measuring instrument design that based on Siemens S7-300 series of PLC,through the environmental temperature and humidity for real-time detection,and at the same time to realize time display and correction functions such as the display design method.

This paper discusses a gear errors measuring system based on double-flank rolling test method.This system can be used to measure and analyze the gear radial composite errors.The author specifically represents the operational principles,system structure and measuring method from both aspects of hardware and software,especially in how to use IT tech to improve the measuring precision and the analysis of the data including the location and measure of the gear defects,as well as the instructions of how to correct these defects.

Teachers were the subject of teaching work,orienting by Meng Erdong's deeds,it described the role of teachers' personality charm in the teaching process,had a strong charisma cohesion and affinity,eliminated student contradiction;enhanced teaching effectiveness;for the healthy growth of a demonstration effect and a subtle role in influencing student's life.