This paper describes a static disturbance compensation control for a biped walking vehicle. To measure forces and moments caused by a passenger's motion, we use a 6-axis force/torque sensor placed under the passen...
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ISBN:
(纸本)9781424428823
This paper describes a static disturbance compensation control for a biped walking vehicle. To measure forces and moments caused by a passenger's motion, we use a 6-axis force/torque sensor placed under the passenger's seat. When small external force acts on a robot, only a reference ZMP trajectory is changed inside a support polygon. When large external force over a predetermined threshold force acts on a robot, a waist motion is changed. With only the proposed control, however, a robot cannot adapt to rapid disturbance changes. But we have already developed a dynamic disturbance compensation control, so by combining two controls, a human-carrying biped robot, Waseda Leg - No. 16 Refined V (WL-16RV) realized a stable dynamic walk under unknown external disturbances caused by passenger's static and dynamic motion. We confirmed the effectiveness of our proposal through experiments.
Accurate values of material parameters of human tissue are key elements in a surgical robot system using an organ deformation model. However, it is generally difficult to determine the values of the material parameter...
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ISBN:
(纸本)9781424428823
Accurate values of material parameters of human tissue are key elements in a surgical robot system using an organ deformation model. However, it is generally difficult to determine the values of the material parameters of human tissue to be input into the model, because the individual differences of these material properties make them inherently uncertain. In this work, we discuss a method for identifying the values of the material parameters of an organ model. This paper is also concerned with developing a method using the finite element method (FEM) and the extended Kalman filter in order to identify the values of the material parameters of an organ model. The effectiveness of the method was shown through physical experiments using a layered phantom, a three-dimensional deformation model by FEM, and ultrasound imaging equipment. The results of experiments showed that the proposed parameter-identification method improved the reproducibility of the simulation using organ models.
Up to now, different kinds of musical performance robots have been developed. MPRs are designed to closely reproduce the human organs involved during the playing of musical instruments. Our research on the Waseda Flut...
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ISBN:
(纸本)9781424428823
Up to now, different kinds of musical performance robots have been developed. MPRs are designed to closely reproduce the human organs involved during the playing of musical instruments. Our research on the Waseda Flutist robot has been focused on clarifying the human motor control from an engineering point of view. As a result, the Waseda Flutist robot No. 4 Refined W (WF-4RIV) is able of playing the flute nearly similar to an intermediate player. Thanks to the human-like design and the advanced technical skills displayed by the WF-4RIV, novel ways of musical education can be conceived. In this paper;the General Transfer Skill System (GTSS) is implemented on the flutist robot, towards enabling the automated transfer of technical skills from the robot to flutist beginners. A set of experiments are carried out to verify the evaluation and interaction modules of the GTSS. From the experimental results, the robot is able of quantitatively evaluating the performance of beginners, and automatically recognizing the melodies performed by them.
An adaptive robotcontrol strategy combining PID-based feedback and Iterative Learning controller (ILC) is proposed for per-forming passive reaching tasks for RUPERT (TM) (robotic Upper Extremity Repetitive Therapy), ...
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ISBN:
(纸本)9781424428823
An adaptive robotcontrol strategy combining PID-based feedback and Iterative Learning controller (ILC) is proposed for per-forming passive reaching tasks for RUPERT (TM) (robotic Upper Extremity Repetitive Therapy), a pneumatic muscle driven rehabilitation robotic device. Additionally, a fuzzy rule-base is used to estimate the ILC learning rate to achieve an optimized learning. The preliminary test results from two able-bodied subjects demonstrate that the proposed controller can provide consistent performance for different subjects performing different reaching tasks.
It has became problematic in an institute like ours to make own platforms for teaching technical solutions. In the article is described a ready made platform: the robot Soccer system made by Merlin Systems. The paper ...
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ISBN:
(纸本)9781634397971
It has became problematic in an institute like ours to make own platforms for teaching technical solutions. In the article is described a ready made platform: the robot Soccer system made by Merlin Systems. The paper presents its structure and different possibilities. Also we describe our experiences in configuring the system and using it in teaching.
Gait training of stroke survivors can help in retraining their muscles and improving their gait pattern. robot assisted gait training (RAGT) was developed for stroke survivors using ALEX and force-field controller, wh...
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ISBN:
(纸本)9781424428823
Gait training of stroke survivors can help in retraining their muscles and improving their gait pattern. robot assisted gait training (RAGT) was developed for stroke survivors using ALEX and force-field controller, which use assist-as-needed paradigm for rehabilitation. In this paradigm undesirable gait motion is resisted and assistance is provided towards the desirable motion. The force-field controller achieves this paradigm by applying forces at the foot of the subject. Two stroke survivors participated in a 15-day gait training study each with ALEX. The results show that by the end of the training the gait pattern of the patients was improved towards healthy subjects gait pattern. Improvement is seen as increase in the size of the patients' gait pattern, increase in knee and ankle joint excursions and increase in their walking speed on the treadmill.
The complete elimination of external incisions through natural orifice access to the peritoneal cavity is potentially the next step in reducing the invasiveness of surgery. Natural Orifice Translumenal Endoscopic Surg...
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ISBN:
(纸本)9781424428823
The complete elimination of external incisions through natural orifice access to the peritoneal cavity is potentially the next step in reducing the invasiveness of surgery. Natural Orifice Translumenal Endoscopic Surgery (NOTES) provides distinct patient advantages, but is surgically challenging. For the NOTES approach to be applied routinely, devices need to be developed that provide the surgeon with a stable multi-tasking platform for tissue manipulation and visualization. Much research towards device development for NOTES is based on the flexible endoscopy platform. However, these tools remain constrained by the entry incision and are further limited by challenges in tool triangulation, and multi-tasking capabilities. An alternative approach is the use of miniature in vivo robots that can be fully introduced into the peritoneal cavity through a natural orifice. A robotic platform for NOTES is being developed that attempts to emulate laparoscopic capabilities andcontrol. This paper presents the prototype design of this platform and in vivo feasibility studies in non-survivable animal model procedures.
This paper deals with the development of an open design platform for explorative cell mechanotransduction investigation. The produced setup combines SPM (Scanning Probe Microscopy) techniques and advanced robotics app...
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ISBN:
(纸本)9781424428823
This paper deals with the development of an open design platform for explorative cell mechanotransduction investigation. The produced setup combines SPM (Scanning Probe Microscopy) techniques and advanced robotics approaches allowing both prolonged observations and spatial measurements on biological samples. As a result, an enhanced force probing method based on scanning microscopy techniques and advanced robotics and automation approaches are integrated in this device. Visual and force feedback control are used to achieve automatic data acquisition and monitoring process when high skills are required. Experimentation on the mechanical cell characterization under in vitro conditions on human adherent cervix Epithelial Hela cells are presented to demonstrate the viability and effectiveness of the proposed setup.
Untethered microrobotic devices have been proposed for use in ophthalmic surgeries, and localization information is required for their control. The environment of the human eye is externally observable, and images can...
ISBN:
(纸本)9781424428823
Untethered microrobotic devices have been proposed for use in ophthalmic surgeries, and localization information is required for their control. The environment of the human eye is externally observable, and images can be used to localize intraocular agents. There is currently no quantitative description of the effects of the human eye optics on imaging and localizing intraocular objects. In this paper, the common methods of ophthalmoscopy assuming a stationary imaging system are examined and compared with respect to their imaging and localizing properties on a schematic model of the human eye. A mechatronic device that can image intraocular objects with increased field-of-view, spatial resolution, and depth sensitivity is proposed. 3D localization using a depth-from-focus approach is discussed, and the validity and limitations of a method based on paraxial approximations is demonstrated by experiments in a model eye.
This paper describes preliminary results from using reactive control architecture, known as CAPSC (control Architecture for Poor Strip Cutting), which is designed for a gas cutting robot in Gwangyang steelworks, South...
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ISBN:
(纸本)9781424434305
This paper describes preliminary results from using reactive control architecture, known as CAPSC (control Architecture for Poor Strip Cutting), which is designed for a gas cutting robot in Gwangyang steelworks, South Korea. This gas cutting mobile robot, called APSCR (Autonomous Poor Strip Cutting robot) is designed to identify the poor strips, move an initial cutting position, and start to cut over 60 m long poor strip every 9m by using a gas cutting- torch. Since its working environment is extremely complex to robot's functionatities and furthermore robot must deal with explosive tanks, APSCR requires more appropriate control architecture in order to provide the following criterions;safety and simplicity. One of the popular control architectures successfully applied to the service mobile robots, reactive control architecture, is employed as primary control such as navigation, obstacle detection, cutting and so on. Besides, walkthrough procedure for safety is implemented to supervise all possible risks to workers androbot for itself. The experimental results are provided to prove a reliability of the proposed architecture.
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