Fifteen-day Acupuncture Treatment Relieves Diabetic Peripheral Neuropathy

Yanqing Tong,Hongyang Guo,Bing Han 사단법인약침학회 2010 Journal of Acupuncture & Meridian Studies Vol.3 No.2

Our study aimed to investigate the effects of acupuncture on diabetic peripheral neuropathy. We compared 42 cases treated with acupuncture with 21 cases exposed to sham acupuncture and observed the effects on nerve conduction velocity and a variety of subjective symptoms associated with diabetic peripheral neuropathy. Three of the six measures of motor nerves, and two measures of sensory function,demonstrated significant improvement (p < 0.05) over the 15-day treatment period in the acupuncture group, while no motor or sensory function significantly improved in the sham acupuncture group. There were also significant differences in vibration perception threshold between the groups (p < 0.05) and when compared to the baseline levels (p < 0.01) in the acupuncture group. Acupuncture was significantly more effective than sham for treatment of numbness of the lower extremities,spontaneous pain in the lower extremities, rigidity in the upper extremities and alterations in temperature perception in the lower extremities after therapy. Our pilot study has, therefore, provided evidence that acupuncture may be clinically useful for the radical treatment of diabetic peripheral neuropathy.

Hypotensive Effects Induced by Herbal Fomentation at Yongquan Point

YanQing Tong,QiPing Yu,Yan Leng 사단법인약침학회 2012 Journal of Acupuncture & Meridian Studies Vol.5 No.6

Objective: This study aimed at assessing the adequacy of blood pressure (BP) control with the Chinese herbal fomentation at Yongquan point (K1). Method: A total of 51 participants as a group were enrolled. In 10 participants as the subgroup, BP data were compared with those simultaneously recorded from the radial artery of the same side. After the baseline examination, each enrolled patient participated in one session lasting 24 hours, during which Yongquan point (K1) of both sides were fomented with a mixture of Chinese herbs. The technique of 24-hour Ambulatory BP monitoring (ABPM) was repeated at baseline and on the day after the therapy. Results: The systolic and diastolic BP measured intra-arterially during the test were, on average, similar to those measured noninvasively. Patients obtained a 6.0 mmHg reduction for systolic BP and a 4.8 mmHg reduction for diastolic BP during daytime. The rate of adverse events was 2.0% in the group. Conclusion: Our data demonstrated that BP recording by the ABPM method in our study provided a relatively accurate estimate of the average radial BP of the population. So the conclusion, “Chinese herbal fomentation at Yongquan point (K1) of both sides has some hypotensive potentials” was more reliable. Objective: This study aimed at assessing the adequacy of blood pressure (BP) control with the Chinese herbal fomentation at Yongquan point (K1). Method: A total of 51 participants as a group were enrolled. In 10 participants as the subgroup, BP data were compared with those simultaneously recorded from the radial artery of the same side. After the baseline examination, each enrolled patient participated in one session lasting 24 hours, during which Yongquan point (K1) of both sides were fomented with a mixture of Chinese herbs. The technique of 24-hour Ambulatory BP monitoring (ABPM) was repeated at baseline and on the day after the therapy. Results: The systolic and diastolic BP measured intra-arterially during the test were, on average, similar to those measured noninvasively. Patients obtained a 6.0 mmHg reduction for systolic BP and a 4.8 mmHg reduction for diastolic BP during daytime. The rate of adverse events was 2.0% in the group. Conclusion: Our data demonstrated that BP recording by the ABPM method in our study provided a relatively accurate estimate of the average radial BP of the population. So the conclusion, “Chinese herbal fomentation at Yongquan point (K1) of both sides has some hypotensive potentials” was more reliable.

A Novel Speed Estimation Method of Induction Motors Using Real-Time Adaptive Extended Kalman Filter

Yanqing Zhang,Zhonggang Yin,Guoyin Li,Jing Liu,Xiangqian Tong 대한전기학회 2018 Journal of Electrical Engineering & Technology Vol.13 No.1

To improve the performance of sensorless induction motor (IM) drives, a novel speed estimation method based on the real-time adaptive extended Kalman filter (RAEKF) is proposed in this paper. In this algorithm, the fuzzy factor is introduced to tune the measurement covariance matrix online by the degree of mismatch between the actual innovation and the theoretical. Simultaneously, the fuzzy factor can be continuously self-tuned tuned by the fuzzy logic reasoning system based on Takagi–Sugeno (T-S) model. Therefore, the proposed method improves the model adaptability to the actual systems and the environmental variations, and reduces the speed estimation error. Furthermore, a simple exponential function based on the fuzzy theory is used to reduce the computational burden, and the real-time performance of the system is improved. The correctness and the effectiveness of the proposed method are verified by the simulation and experimental results.

Design and Implementation of an Adaptive Sliding-Mode Observer for Sensorless Vector Controlled Induction Machine Drives

Yanqing Zhang,Zhonggang Yin,Jing Liu,Xiangqian Tong 대한전기학회 2018 Journal of Electrical Engineering & Technology Vol.13 No.3

An adaptive sliding-mode observer for speed estimation in sensorless vector controlled induction machine drives is proposed in this paper to balance the dilemma between the requirement of fast reaching transient and the chattering phenomenon reduction on the sliding-mode surface. It is well known that the sliding-mode observer (SMO) suffers from the chattering phenomenon. However, the reduction of the chattering phenomenon will lead to a slow transient process. In order to balance this dilemma, an adaptive exponential reaching law is introduced into SMO by optimizing the reaching way to the sliding-mode surface. The adaptive exponential reaching law is based on the options of an exponential term that adapts to the variations of the sliding-mode surface and system states. Moreover, the proposed sliding-mode observer considering adaptive exponential reaching law, which is called adaptive sliding-mode observer (ASMO), is capable for reducing the chattering phenomenon and decreasing the reaching time simultaneously. The stability analysis for ASMO is achieved based on Lyapunov stability theory. Simulation and experimental results both demonstrate the correctness and the effectiveness of the proposed method.

A Novel Speed Estimation Method of Induction Motors Using Real-Time Adaptive Extended Kalman Filter

Zhang, Yanqing,Yin, Zhonggang,Li, Guoyin,Liu, Jing,Tong, Xiangqian The Korean Institute of Electrical Engineers 2018 Journal of Electrical Engineering & Technology Vol.13 No.1

To improve the performance of sensorless induction motor (IM) drives, a novel speed estimation method based on the real-time adaptive extended Kalman filter (RAEKF) is proposed in this paper. In this algorithm, the fuzzy factor is introduced to tune the measurement covariance matrix online by the degree of mismatch between the actual innovation and the theoretical. Simultaneously, the fuzzy factor can be continuously self-tuned tuned by the fuzzy logic reasoning system based on Takagi-Sugeno (T-S) model. Therefore, the proposed method improves the model adaptability to the actual systems and the environmental variations, and reduces the speed estimation error. Furthermore, a simple exponential function based on the fuzzy theory is used to reduce the computational burden, and the real-time performance of the system is improved. The correctness and the effectiveness of the proposed method are verified by the simulation and experimental results.

Design and Implementation of an Adaptive Sliding-Mode Observer for Sensorless Vector Controlled Induction Machine Drives

Zhang, Yanqing,Yin, Zhonggang,Liu, Jing,Tong, Xiangqian The Korean Institute of Electrical Engineers 2018 Journal of Electrical Engineering & Technology Vol.13 No.3

An adaptive sliding-mode observer for speed estimation in sensorless vector controlled induction machine drives is proposed in this paper to balance the dilemma between the requirement of fast reaching transient and the chattering phenomenon reduction on the sliding-mode surface. It is well known that the sliding-mode observer (SMO) suffers from the chattering phenomenon. However, the reduction of the chattering phenomenon will lead to a slow transient process. In order to balance this dilemma, an adaptive exponential reaching law is introduced into SMO by optimizing the reaching way to the sliding-mode surface. The adaptive exponential reaching law is based on the options of an exponential term that adapts to the variations of the sliding-mode surface and system states. Moreover, the proposed sliding-mode observer considering adaptive exponential reaching law, which is called adaptive sliding-mode observer (ASMO), is capable for reducing the chattering phenomenon and decreasing the reaching time simultaneously. The stability analysis for ASMO is achieved based on Lyapunov stability theory. Simulation and experimental results both demonstrate the correctness and the effectiveness of the proposed method.