Studies of arm movement have suggested that the control of stiffness may be important for maintaining stability during interactions with the environment. Here we have examined the voluntary control of stiffness in the human jaw. The goal was to determine whether changes in jaw stiffness might be used to maintain jaw position in the face potentially destabilizing mechanical loads. A series of force pulses was applied to the jaw using a robotic device. The loads were designed to disrupt the ability of subjects to maintain a static jaw posture. In all cases, subjects increased the magnitude of...
XVII IMEKO World Congress · TC18 · 2003 · Download
The problem of finding the parameters of musical composition, which cause emotional perception of music and at that, can be measured, has been formulated. A hypothesis has been advanced and proved under which the perception of music is realized in an inertial nonlinear system, the emotional reaction of a listener depending on the parameters of a combinative spectrum. The regularities have been discovered which distinguish the combinative spectrum of oscillations at the output of the non-linear system under the influence of music components written in various major and minor keys. The...
XVII IMEKO World Congress · TC18 · 2003 · Download
Certain plastic film materials can be used as sensitive tactile and impact sensors covering large surfaces. In surveillance and health care applications they can sense movement, activity or some physiological parameters. Various available film materials and their operational principles are reviewed. Comparison has been made between piezoelectric polymer film, thin porous electret material, and soft capacitive film materials in their sensing capabilities. Generation of the signal and measurement instrumentation for different sensor configurations is discussed. The structure and properties of...
XVII IMEKO World Congress · TC18 · 2003 · Download
The present paper proposes a human interface regulating the viscoelastic characteristics of the robot manipulator by the EMG signals picked up from the subject. The desired trajectory intended by the subject is generated through the bilinear internal arm model with the EMG input signals, and then the viscoelastic coefficients of robot manipulator are regulated corresponding to the sum of the flexor and extensor EMG levels. It is then shown that the subject is able to change the interactive characteristics against the robot’s environment by his own intention.
XVII IMEKO World Congress · TC18 · 2003 · Download
A new method for objective voice quality measurements is described in the article. It is based on wavelet transformation that enables intrinsically also time localisation of eventual impairments. In comparison with other methods (based on P.861 and P.862 algorithms), the described method saves about one half of operations needed for achievement of comparable results, thus saving computation power and time.
XVII IMEKO World Congress · TC18 · 2003 · Download
In order to realize a myoelectric-controlled multi-functional hand prosthesis, this paper proposes a method to improve the myoelectric pattern classification ability of a hand controller. By applying the proposed method of µ-LAW quantization, the pattern classification rate increased by 11.1% (averaged for five subjects) and by 15.5% (maximum), with a practical pattern classification rate of 97.8% being achieved.
XVII IMEKO World Congress · TC18 · 2003 · Download
This paper presents an application of a fuzzy rule-based aggregation to a dataglove for the recognition of gestures. The fuzzy glove is a dataglove that has fuzzy sensor functionalities. The approach used for the definition of numerical to linguistic conversion, and for the definition of the sets of rules is discussed.
XVII IMEKO World Congress · TC18 · 2003 · Download
This paper describes an ultrasonic robot eye for shape recognition using ultrasound pressure data and a Genetic Algorithm. This type of robot eye has commonly used a Neural Network (NN) for shape recognition. However, a NN perform poorly when lacking learned data. In order to overcome this problem when using a NN, we here attempt to replace the NN with a Genetic Algorithm (GA). Unlike a NN, the GA can recognize shapes without depending on learned data. Experimental results demonstrate that the recognition ratios of the proposed ultrasonic robot eye using the GA are higher than that of a...
XVII IMEKO World Congress · TC17 · 2003 · Download
Having been realized the Timber Barking Model Device with the Operational Dimensions, which used the new untraditional timber barking way – by means of the Electric Current Effects Passing through the Subcortical Layers, the number of Sensors have to be used, to be set the adaptive intelligent barking device on the robotized level. To be reached the successful timber barking - the key problem is the electric power controller’s setting with respect - first – to the subcortical layers quality (being changed in time); - second – with respect to the log’s cone; - third – with respect to the...
XVII IMEKO World Congress · TC17 · 2003 · Download
This paper deals with the application of a quartz resonator to a force sensor installed into an active antenna for use in recognizing an environment. When the antenna makes contact with the environment, the force sensor can detect the contact force and the contact position. Shapes of a rectangular plate, a circular plate and a rectangular parallelepiped were recognized by the active antenna.
XVII IMEKO World Congress · TC17 · 2003 · Download