• Journal of Electrical Engineering and Technology
• /
• 제13권5호
• /
• pp.2125-2133
• /
• 2018

To achieve high performance speed regulation, a robust adaptive speed controller is proposed for the permanent magnet synchronous motor (PMSM) subject to parameter uncertainties and input saturations in this paper. A nonlinear adaptive control is introduced to compensate the PMSM speed tracking errors due to uncertainties, disturbances and control input saturation constraints. By combining the adaptive control and the nonlinear robust control based on the interconnection and damping assignment (IDA) strategy, a new robust adaptive control is designed for speed regulation of PMSM. Stability and robustness of the closed-loop control system involved with the constrained control inputs rather than unconstrained control inputs are validated. Simulations for PMSM control in the presence of uncertainties and saturations nonlinearities show that the proposed approach is effective to regulate speed, and the average tracking error using the proposed approach is at least 32% smaller than the compared methods.

• 아동학회지
• /
• 제35권1호
• /
• pp.61-76
• /
• 2014

This study examined the effects of perfectionism and cognitive-emotion regulation strategies on the test anxiety. The participants in this study were 423(227 boys, 196 girls) 6th graders recruited from four elementary schools in Seoul, Korea. The participants completed the Test Anxiety Inventory-Korea(Kim, 1991), the Child and Adolescent Perfectionism Scale(CAPS; Flett at al, 2000), and the Cognitive-Emotion Regulation Questionnaire(CERQ; Garnefski, 2001). The results of this study were as follows. First, self-oriented perfectionism and socially prescribed perfectionism were both positively associated with test anxiety. Additionally, the children who used more adaptive cognitive-emotion regulation strategies reported lower test anxiety, whereas the children who used more maladaptive cognitive-emotion regulation strategies reported higher test anxiety. Secondly, there was an interactional effect between self-oriented perfectionism and maladaptive cognitive-emotion regulation strategies on test anxiety. Lastly, socially prescribed perfectionism and cognitive-emotion regulation strategies had a significant effect on children's test anxiety. However, there were no interactional effects observed between socially prescribed perfectionism and cognitive-emotion regulation strategies on test anxiety.

• 지역사회간호학회지
• /
• 제32권4호
• /
• pp.457-466
• /
• 2021

Purpose: The purpose of this study was to examine the correlations among emotional perception clarity, emotion regulation, family relationship, non-suicidal self-injury, and depression, and to determine associated factors of non-suicidal self-injury and depression for senior elementary school students. Methods: Data were collected from 150 early adolescences in K region, Korea. A self-report questionnaire consisted of Trait Meta-Mood Scale, Cognitive Emotion Regulation Questionnaire, Family Relationship Assessment Scale, Functional Assessment of Self-Mutilation, and Children's Depression Inventory. The data were analyzed using t-test, Pearson's correlation coefficient, logistic regression, and multiple regression analysis. Results: Non-suicidal self-injury and depression were positively associated with maladaptive emotion regulation strategy and family conflict, but negatively related to emotional perception clarity and family support. Adaptive emotion regulation strategy and family togetherness were only significantly correlated with depression. In logistic regression analysis, significant predictors of non-suicidal self-injury were emotional perception clarity, maladaptive emotion regulation strategy, and family support. Multiple regression analysis found that significant factors of depression were adaptive and maladaptive emotion regulation strategies, which explained 38.0% of the variance. Conclusion: Our study findings suggest that targeted intervention to reinforce the adaptive emotion regulation strategy and family relationship may prevent non-suicidal self-injury, and depression for senior elementary school students.

• 대한기계학회논문집
• /
• 제17권1호
• /
• pp.69-77
• /
• 1993

본 연구에서는 Koren과 Masory가 개발하여 적분제어기에 적용한 제어알고리즘 을, 제어기 반응속도를 향상시키기 위하여 비례적분제어기에 적용하는 방법을 제시하 고자 한다. 실험을 통하여 제어시스템을 모델링하고, 근궤적법을 이용하여 시스템을 안정하게 유지하기 위한 개회로 이득을 선정하며, 기존의 보통선반을 적응제어시스템 으로 개발하여 고정이득 비례적분제어기와 가변이득 비례적분제어기의 성능을 실험을 통하여 비교하고자 한다.

• Journal of Korean Biological Nursing Science
• /
• 제26권3호
• /
• pp.195-205
• /
• 2024

Purpose: This study examined the effects of the healing movie programs for cancer survivors on post-traumatic stress syndrome, resilience, and cognitive emotional control strategies, a quasi-experimental design. Methods: Participants included 39 cancer survivors registered in four healthcare centers in Gyeongsangnam-do. The intervention and control group included 19 and 20 participants, respectively. The healing program using movies developed in this study was provided to the intervention group in 10 sessions, occurring twice each week for 5 weeks and lasting 80 minutes per session. The data were collected using structured questionnaires and they were analyzed to examine differences in the test scores before and after the intervention. Results: In the intervention group, the post-traumatic stress syndrome (F = 14.97, p < . 001) decreased significantly and the resilience (F = 19.55, p < .001) and adaptive cognitive emotion regulation (F = 5.11, p = .029) increased significantly. The difference between the intervention and control group was statistically significant in post-traumatic stress syndrome, resilience, and adaptive cognitive emotion regulation. Thus, the healing program of this study significantly reduced post-traumatic stress, and it improved both resilience and adaptive cognitive emotion regulation of cancer cancer survivors. Conclusion: The healing program is an effective psychosocial nursing intervention that helps cancer survivors feel better about their illness, and it helps them healthy transition from negative emotions to increased resilience and positive cognitive emotions.

• 한국정밀공학회지
• /
• 제12권4호
• /
• pp.55-66
• /
• 1995

This paper presents an explicit pole-assignment adaptive servocontrol shceme and its application to cutting force regulation for feedrate maximization. The controller structure of the suggested adaptive control scheme is based on robust control theory. This controller structure is then combined with an on-line model estimation algorithm. The whole scheme is applied to a milling process control. The results of real time cutting experimental studies show that the asymptotic regulation of milling peak cutting forces can be achieved with robust- ness against the time varying perturbations to the process model parameters, which are caused by nonlinear cutting dynamics.

• 대한전기학회논문지
• /
• 제36권7호
• /
• pp.514-523
• /
• 1987

Pole assignment adaptive controller has been suggested for automatic regulation of blood pressure by means of hypertinsive of hypotensive drugs. The relationship between the drug infusion rate and the blood pressure was described by an ARMA model. This adaptive algorithm does not reguire preliminary tests for the purpose of tuning the parameters, and have the capability to adjust automatically to changes in the curculatory state of subject. Experimental results on rabbits showed that stable control are occurred during operation. On the basis of theoretical considerations and experimental results, we expected that adaptive drug infusion system using pole assignment procedure might be effectively applied to the blood pressure control in clinical application.

• Advances in Computational Design
• /
• 제5권3호
• /
• pp.233-260
• /
• 2020

The main purpose to introduce model based controller in proposed control technique is to provide better and fast learning of the floating dynamics by means of fuzzy logic controller and also cancelling effect of nonlinear terms of the system. An iterative adaptive dynamic programming algorithm is proposed to deal with the optimal trajectory-tracking control problems for autonomous underwater vehicle (AUV). The optimal tracking control problem is converted into an optimal regulation problem by system transformation. Then the optimal regulation problem is solved by the policy iteration adaptive dynamic programming algorithm. Finally, simulation example is given to show the performance of the iterative adaptive dynamic programming algorithm.

• 디지털융복합연구
• /
• 제17권11호
• /
• pp.327-337
• /
• 2019

본 연구의 목적은 성인의 스마트폰 중독이 주관적 안녕감에 영향을 미치는 과정에서 실행기능 결함과 적응적 인지적 정서조절전략의 이중매개효과를 검증하고, 성인 스마트폰 중독 치료에 대한 시사점을 파악하는 것이었다. 성인 148명(남성 71명, 여성 77명)을 대상으로 자기보고식 설문을 실시하고 회귀분석을 통해 매개효과를 검증하였다. 핵심연구결과는 다음과 같다. 첫째, 스마트폰 중독과 적응적 인지적 정서조절전략 간의 관계에서 실행기능 결함은 매개역할을 했다. 둘째, 스마트폰 중독과 주관적 안녕감 간의 관계에서 적응적 인지적 정서조절전략의 매개효과는 유의미하지 않았다. 셋째, 스마트폰 중독과 주관적 안녕감 간의 관계에서 실행기능 결함과 적응적 인지적 정서조절전략은 이중매개 및 완전매개 효과를 나타냈다. 본 연구결과는 성인 스마트폰 중독군의 치료적 개입에 있어 실행기능 훈련과 적절한 인지적 정서조절전략의 함양이 도움이 될 수 있음을 시사하였다. 마지막으로 본 연구의 제한점과 전체 성인 연령층을 대상으로 한 향후연구의 필요성이 논의되었다.

• IMMUNE NETWORK
• /
• 제13권6호
• /
• pp.227-234
• /
• 2013

The intestinal immune system has an ability to distinguish between the microbiota and pathogenic bacteria, and then activate pro-inflammatory pathways against pathogens for host defense while remaining unresponsive to the microbiota and dietary antigens. In the intestine, abnormal activation of innate immunity causes development of several inflammatory disorders such as inflammatory bowel diseases (IBD). Thus, activity of innate immunity is finely regulated in the intestine. To date, multiple innate immune cells have been shown to maintain gut homeostasis by preventing inadequate adaptive immune responses in the murine intestine. Additionally, several innate immune subsets, which promote Th1 and Th17 responses and are implicated in the pathogenesis of IBD, have recently been identified in the human intestinal mucosa. The demonstration of both murine and human intestinal innate immune subsets contributing to regulation of adaptive immunity emphasizes the conserved innate immune functions across species and might promote development of the intestinal innate immunity-based clinical therapy.