• Journal of Mechanical Science and Technology
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• 제17권10호
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• pp.1399-1410
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• 2003

In this paper, we develop a joystick manual driving algorithm for an electric vehicle called Cycab. Cycab is developed as a public transportation vehicle, which can be driven either by a manual joystick or an automated driving mode. The vehicle uses six motors for driving four wheels, and front/rear steerings. Cycab utilizes one industrial PC with a real time Linux kernel and four Motorola MPC555 micro controllers, and a CAN network for the communication among the five processors. The developed algorithm consists of two automatic vehicle speed control algorithms for normal and emergency situations that override the driver's joystick command and an open loop torque distribution algorithm for the traction motors. In this study, the algorithm is developed using SynDEx, which is a system level CAD software dedicated to rapid prototyping and optimizing the implementation of real-time embedded applications on distributed architectures. The experimental results verify the usefulness of the two automatic vehicle control algorithms.

• International Journal of Automotive Technology
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• 제7권3호
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• pp.377-383
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• 2006

This paper presents evaluation and comparisons of manual driving and driving with intelligent cruise control(ICC) systems. An intelligent vehicle cruise control strategy has been designed to achieve natural vehicle behavior of the controlled vehicle that would make human driver feel comfortable and therefore would increase driver acceptance. The evaluation and comparisons of the ICC and manual driving have been conducted using real-world vehicle driving data and an ICC vehicle simulator.

• 대한기계학회논문집A
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• 제27권7호
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• pp.1146-1151
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• 2003

In this paper, results of an analysis of driving behavior characteristics and a driver-adaptive control algorithm for adaptive cruise control systems have been described. The analysis has been performed based on real-world driving data. The vehicle longitudinal control algorithm developed in our previous research has been extended based on the analysis to incorporate the driving characteristics of the human drivers into the control algorithm and to achieve natural vehicle behavior of the adaptive cruise controlled vehicle that would feel comfortable to the human driver. A driving characteristic parameters estimation algorithm has been developed. The driving characteristics parameters of a human driver have been estimated during manual driving using the recursive least-square algorithm and then the estimated ones have been used in the controller adaptation. The vehicle following characteristics of the adaptive cruise control vehicles with and without the driving behavior parameter estimation algorithm have been compared to those of the manual driving. It has been shown that the vehicle following behavior of the controlled vehicle with the adaptive control algorithm is quite close to that of the human controlled vehicles. Therefore, it can be expected that the more natural and more comfortable vehicle behavior would be achieved by the use of the driver adaptive cruise control algorithm.

• 한국항공우주학회지
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• 제33권7호
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• pp.85-91
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• 2005

군용항공기는 고받음각에서 적절한 조종성 및 항공기 이탈에 대한 안정성을 확보하고 있어야 한다. 고받음각에서 항공기가 이탈에 진입할 수 있는 한계값은 항공기 형상설계에 직결되는 문제이다. 하지만 현대의 고성능 전투기는 전기식 비행제어계통을 사용하여 고받음각 제어법칙을 설계함으로써 한계 값 내에서 항공기의 안정성을 보장하고 있으며 항공기가 이탈 시, 안전하게 회복할 수 있도록 고받음각 제어법칙을 설계한다. 현재 T-50에 적용되어 있는 고받음각 제어법칙은, 세로축 방향으로는 받음각 제한기 및 MPO(Manual Pitch Override) 모드, 가로-방향축으로는 고받음각 이탈제한기, 가로축 명령제한기, 방향축 조종사 명령제한기 및 스핀방지기가 설계되어 있다. 본 논문에서는 T-50 에 적용되어 있는 고받음각 제어법칙을 소개하며, 고받음각 비행시험을 통하여 항공기 안정성에 관한 연구를 수행하였다.

• 척추신경추나의학회지
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• 제17권1호
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• pp.11-19
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• 2022

Objectives This systematic review aimed to provide evidence of the effectiveness and safety of manual therapy for asthma in children and adolescents. Methods We queried eight electronic databases (PubMed, Ovid-MEDLINE, EMBASE, The Cochrane Library, CNKI, ScienceON, KISS, and RISS) up to the end of April 2022. We included only randomized controlled trials (RCTs) investigating manual therapy for the treatment of asthma in children and adolescents. The methodological quality of the included RCTs was evaluated using the Cochrane risk-of-bias tool 1.0. Results Four RCTs were eligible for inclusion. Meta-analysis could not be performed due to the heterogeneity of the studies. One study showed the statistical significance of SMD 0.41 (95% CI: 0.06, 0.76, p<0.05) in the comparison with the osteopathic therapy group and the sham control group before and after treatment on the same day of peak expiratory flow. Conclusions This possibility was observed in a non-pharmacological approach to manual therapy. Manual therapy can be considered as an adjunct therapy for asthma treatment in children and adolescents who have difficulty with drug therapy.

• 한방재활의학과학회지
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• 제19권2호
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• pp.187-202
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• 2009

Objectives : The purpose of this study is to investigate the efficacy of adjusting leg length inequality(LLI) by chuna manual treatment for post-stroke hemiplegia. Methods : 39 patients with stroke-originated hemiplegia who had leg length inequality were included in this study. Chuna manual treatment at pelvic girdle was applied to 20 patients and they had been treated by general oriental rehabilitation therapy(test group). The other 19 patients had been treated by general oriental rehabilitation therapy only(control group). Outcomes were assessed by Modified Barthel Index(MBI), Berg Balance Scale(BBS), lower extremity Fugl-Meyer Assessment(FMA) at the point of beginning and end of the study. Results : 1. In terms of activity of daily living(ADL), test group showed statistically meaningful differences compared to control group(p<0.05). In subacute group(onset had been past under 6 months), test group didn't showed statistically meaningful differences compared to control group. In chronic group(onset had been past over 6 months), test group didn't showed statistically meaningful differences compared to control group. 2. In terms of lower extremity function and balance, test group showed statistically meaningful differences compared to control group(p<0.05). In subacute group, test group didn't showed statistically meaningful differences compared to control group. In chronic group, test group showed statistically meaningful differences compared to control group(p<0.01). 3. In terms of lower extremity function of hemiplegic side, test group showed statistically meaningful differences compared to control group(p<0.05). In subacute group, test group didn't showed statistically meaningful differences compared to control group. In chronic group, test group showed statistically meaningful differences compared to control group(p<0.05). Coclusions : Adjusting LLI by chuna manual treatment is efficacious for rehabilitation of stroke-originated hemiplegia, in terms of ADL, balance and lower extremity function, and is especially efficacious for chronic patients.

• 한국자동차공학회논문집
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• 제9권5호
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• pp.105-114
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• 2001

In this study, a shift control algorithm far improving the shift quality of a parallel hybrid drivetrain with an automated manual transmission (AM) is proposed. The general AMT requires the sophisticated control of clutch in the clutch engagement to improve its shift characteristics, and that is generally known to be difficult. But in this hybrid drivetrain, we can control the speeds of clutch plates by engine and motor control, and it provides the easier clutch control in shift process than general AMT. Additionally, it permits the much-reduced shift shock. The motor control during the shift period is also to achieve reduced velocity drop of the vehicle in comparison with that of a general AMT. Furthermore various dynamometer-based experiments are carried out to prove the validity of the proposed shift control algorithm.

• Safety and Health at Work
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• 제9권4호
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• pp.372-380
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• 2018

The manual handling of people (MHP) is known to be associated with high incidence of musculoskeletal disorders for aged care staff. Environment-related MHP interventions, such as appropriate seated heights to aid sit-to-stand transfers, can reduce staff injury while improving the patient's mobility. Promoting patient mobility within the manual handling interaction is an endorsed MHP risk control intervention strategy. This article provides a narrative review of the types of MHP environmental controls that can improve mobility, as well as the extent to which these environmental controls are considered in MHP risk management and assessment tools. Although a range of possible environmental interventions exist, current tools only consider these in a limited manner. Development of an assessment tool that more comprehensively covers environmental strategies in MHP risk management could help reduce staff injury and improve resident mobility through auditing existing practices and guiding the design of new and refurbished aged care facilities.

• 척추신경추나의학회지
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• 제14권1호
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• pp.13-23
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• 2019

Objectives : The purpose of this study was to evaluate the effectiveness of Chuna manual therapy (CMT) for the treatment of tinnitus. Methods : We performed a literature search using eight electronic databases, using related keywords, from January 1990 until the end of April 2019. The randomized controlled trials (RCTs) which evaluated the effectiveness of CMT in the treatment of tinnitus were included in this study. The risk of bias were evaluated using the Cochrane risk of bias tool. Results : Five appropriate RCTs were included and analyzed. The efficacy rate of the CMT group was statistically significantly higher (P<0.03) versus the control group treated with Western medicine, acupuncture, and herbal medicine-only. Conclusions : In this literature review, there was sufficient evidence that CMT is more effective than conventional therapy (including Western medicine, acupuncture, and herbal medicine) in treating tinnitus. However, it should be considered that the included studies lacked any reference of the risk of bias

• 국제물리치료학회지
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• 제9권4호
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• pp.1614-1618
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• 2018

The purpose of this study was to evaluate the effect of joint mobilization and manual stretching exercises in patients with hallux valgus. Twenty-three participants were divided into two groups; joint mobilization (n=11) and manual stretching exercises (n=12). The subjects participated in the experiment for 15minutes, three times a week, four weeks. The joint mobilization (Grade III, Maitland) was performed to experimental group for a minute and then rested for 10 seconds for each set. The manual stretching was performed to control group with three exercise session (preparatory and finishing exercises, agonist contraction exercises, agonist contraction and hold-relax exercises). In the results of the study, intragroup comparison of the deformity angles (DA) was shown to decrease from $15.18^{\circ}$ to $13.09^{\circ}$ in the joint mobilization group (p<.05) and from $19.00^{\circ}$ to $16.83^{\circ}$ in the stretching exercises group (p<.05). However, left static foot pressure (LSFP), right static foot pressure (RSFP), left dynamic foot pressure (LDFP) and right dynamic foot pressure (RDFP) did not significantly increase or decrease after the experiment. Intergroup differences also were not statistically significant in all variables (p>.05). The current study suggests that JM and MSE are effective in decreasing the DA in patients with hallux valgus.