Mihaela Cecilia Florescu

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Verified

Mihaela verified their affiliation via an institutional email.

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• PhD
• Lecturer at University of Craiova

The implementation of Industry 4.0 is based, among other things, on the digitization and greening of manufacturing systems. Most traditional manufacturing systems are known for low productivity and efficiency. They are also known for the impact they have on the environment, with relatively high carbon footprints. The paper transfers a series of kno...

Wire + Arc Additive Manufacturing (WAAM®) is an additive manufacturing (AM) process capable of producing near net shape parts while reducing costs and thus gathering increased attention from researchers and manufacturers. Although a significant amount of work has already been published relating to the WAAM processing of stainless steels, it was mai...

The research for this article consists in analysis of some questionnaire distributed among different higher education institutions and VET centers in the different EU countries. First, it was made a characterization of the target group involved in the questionnaires, which is important to evaluate the real situation of the teachers and trainer and...

This article consists in an analysis of different training methodologies obtained through research and evaluating the main methodologies in use in the field of steel structures. It starts with a state-of-the-art of to the cutting-edge digital teaching and learning techniques and tools for delivering innovative higher education and training in steel...

Education and Training represent the principal means through which individuals acquire skills and competences. And it is through participation in continuous professional development and learning that adults will access, on an ongoing basis, the upskilling and reskilling necessary to adapt to the continuous changes. The paper analyses the gathered i...

The paper treats the control problem of the locomotion phases in a jumping cycle of a robot. The mechanical architecture of the leg with elastic lower segment (ATHLETE MODEL) is discussed. The dynamic model of the motion in stance phase is determined. The touch-down sequence, when the elastic foot hits the ground, is discussed and the control syste...

The paper studies the control problem of a class of hyper-redundant robots with uncertain components by using the output control. To avoid the complexity of distributed controllers, in this paper is proposed a lumped output controller. A weighted technique is used to generate a boundary output. A PD controller is proposed and an algorithm for deter...

The paper deals with the control problem of a class of hyper-redundant robots constituted by a chain of continuum segments. The main parameter, the system state, is determined by the position and velocity generalised variables. The dynamic model is studied and the constraints of the state variables and nonlinear components are proved. The observabi...

The paper focused on a method of designing PD controller for a class of balancing robot-cart and pole system. The uncertainty of model parameters was introduced as constraint in state space. PD controller was designed by using the frequency criterions. The stability of the control system was determined by Lyapunov techniques and Kalman-Yakubovich-P...

In this study, the dynamic model of a tentacle robot in two-dimensional space will be presented. We shall attempt to achieve the discretization of this type of robot, and then, by applying a nonlinear observer, the driving control system of the hyper redundant arm will be achieved. Some results obtained by simulating the robot’s motion will be pres...

The paper studies the output tracking control problem of a class of hyper-redundant robotic arms described by hyperbolic equations. The stability analysis and the resulting controllers are obtained by using the concept of boundary geometric control and an output tracking technique. A conventional PD control is proposed and analysed. Then, for a dyn...

The paper studies the output tracking control problem of a class of hyper-redundant robotic arms described by hyperbolic equations. The stability analysis and the resulting controllers are obtained by using the concept of boundary geometric control and an output tracking technique. A conventional PD control is proposed and analysed. Then, for a dyn...

In this paper, the problem of a class of hyperredundant arms with continuum elements that performs the grasping function by coiling is discussed. This function is often met in the animal world as the elephant's trunk or octopus tentacle. First, the dynamic model in 3D-space is developed. The equations that describe the motion of the arm that carrie...

The curvature control problem for a class of hyper-redundant robot arms with continuum elements characterized by an elastic backbone system is analyzed. The main parameters of the arm shape as curvature and curvature gradient are estimated. The stability analysis and the resulting controllers are obtained using the concept of boundary geometric con...

The paper treats a class of hyper-redundant robots with continuous elements, which performs the function of grasping by coil. First, the dynamic model of the system is deduced. Laws of control are introduced based on the system's energy for force control problem. It is proposed a method of controlling the force using the DSMC method, showing the ev...

This paper studies the control problem for a type of hyper-redundant robot arms. The kinematic control for inverse model and the dynamic model of the tentacle robot will be studied. Next, the fuzzy control algorithm for this manipulator will be treated, taking into account two different cases, namely the desired position is time variable or the des...

The paper treats the control problem for a class of hyper-redundant robots characterized by elastic backbone. The dynamic model of this system is analyzed. A measuring system based on curvature film sensors is proposed and an optical placement technique of sensors is discussed. A control algorithm is introduced by using the concept of boundary geom...

Command and control system of a hyper-redundant robot is presented in this paper. Hyper-redundant robots are a new class of robots designed with a large number of joints with high degree of mobility, in order to operate in areas with restrictions. The robot presented in this paper is a hyper-redundant robot elephant trunk type with truncated cone s...

Robotic cooperative tasks impose, in many cases, a grasping action. Grasping by coiling it is one of the most versatile action. The present article propose a frequency stability criterion based on the Kahman - Yakubovich - Popov Lemma for the hyper-redundant arms with continuum element that performs the grasping function by coiling. Dynamics of the...

The paper focuses on the control of a class of hyper-redundant arms with continuum elements, with boundary measuring and control. First, the dynamic model of the continuum arm is presented. The measuring systems are based on the film sensors that are placed at the terminal sub-regions of the arm. The observers are proposed in order to reconstruct t...

The control problem of a class of hyper-redundant arms with con-tinuum elements, with boundary measuring and control is discussed. First, the dynamic model of the continuum arm is presented. The measuring sys-tems are based on the film sensors that are placed at the terminal sub-regions of the arm. The observers are proposed in order to reconstruct...

The paper treats the control problem of a class of hyper-redundant robots with continuum elements with sensors placed on the terminal points of the arm segments. The dynamic model of the arm is presented. The measuring system is based on the sensors placed at the several sub-regions of the arm. A full state control is introduced and an observer is...

The paper deals with a special class of robots, namely the hyper-redundant arm with continuum elements. First, the dynamic model of the tentacle arm during the motion toward the imposed position is analyzed. The dynamic model of the tentacle arm with continuum elements in conjunction with the electro-rheological fluid is discussed. Also, numerical...

Robot soccer competition provides an excellent opportunity for robotics research. In particular, the soccer robots must perform real-time visual recognition, navigate in a dynamic field, avoid the obstacle, collaborate with teammates, and kick the ball in the correct direction. All these tasks demand robots that are autonomous (sensing, thinking, a...

The paper focuses on hyper-redundant arms with continuum elements that perform the grasping function by coiling. First, there is concern with the dynamic model of the continuum arm for the position control during non-contact operations with the environment. A frequency stability criterion based on the Kahman - Yakubovich - Popov Lemma and P and PD...

The paper treats the control problem of the hyper-redundant arms that perform the grasping function by coiling. First, the dynamic model of the continuum arm for the position control is studied. A frequency stability criterion based on the KLP Lemma and P and PD control techniques are proposed. The control algorithms based on SMA actuators are intr...

The control problem of hyper-redundant arms with continuum elements by frequency criteria is discussed. First, there is concern with the dynamic model of the continuum arm for the position control during non-contact operations with the environment. A frequency stability criterion based on the Kalman - Yakubovich - Popov Lemma and P and PD control a...

In this paper, the problem of a class of hyperredundant arms with continuum elements that performs the grasping function by coiling is discussed. This function is often met in the animal world as the elephant's trunk or octopus tentacle. First, the dynamic model in 3D-space is developed. The equations that describe the motion of the arm that carrie...

In this paper, the problem of a class of hyperredundant arms with continuum elements that performs the grasping function by coiling is discussed. This function is often met in the animal world as the elephant's trunk or octopus tentacle. First, the dynamic model in 3D-space is developed. The equations that describe the motion of the arm that carrie...

The grasping control problem for a hyperredundant arm is studied. First, the dynamic model of the arm is analyzed. The control problems are divided in the subproblems: the position control in a desired reaching area, the control of the arm around the object-load and the force control of grasping. The difficulties determined by the complexity of the...

The grasping control problem for a hyperredundant manipulator is presented. The dynamic model is derived by using Lagrange equations developed for infinite dimensional systems. The algorithms for the position and force control are proposed. The arm fluid pressure control is inferred and the conditions that ensure the stability of the motion are dis...

The grasping control problem for a hyperredundant arm is studied. Frist, dynamic model of the arm is analyzed. The control problems are divided in the subproblems: the position control in a desired reaching area, the control of the arm around the object-load and the force control of grasping. The difficulties determined by the complexity of the non...

Robot soccer is a challenging platform for multi-agent research, involving topics such as real-time image processing and control, robot path planning, obstacle avoidance and machine learning. The system consists of a supervisory controller, and controllers for defending and goalkeeping robots. These controllers are designed using Petri net. The rob...

The paper focuses on the control problem of a hyperredundant robot that performs the coil function of grasping. First, the dynamic model of a hyperredundant arm with continuum elements produced by flexible composite materials in conjunction with active-controllable electro-rheological fluids is analyzed. Secondly, both problems, i.e. the position c...

The paper focuses on the control problem of a tentacle robot that performs the coil function of grasping. First, the dynamic model of a hyperredundant arm with continuum elements produced by flexible composite materials in conjunction with active-controllable electro-rheological fluids is analyzed. Secondly, both problems, i.e. the position control...

The paper focuses on the control problem of a tentacle robot that performs the coil function of the grasping. First, the dynamic model of a tentacle arm with continuum elements produced by flexible composite materials in conjunction with active-controllable electro-rheological fluids is analyzed. Secondly, both problems, i.e. the position control a...

The present paper discusses a sliding mode control method suitable for solving the control problem of hydraulic position servos with a flexible load. The statement of problems is briefly given, and sliding mode control design for this model is discussed in detail. The hydraulic actuation of the system is based on electrorheological fluid. The elect...

The paper focuses on the control problem of a hyperredundant robot that performs the coil function of the grasping. First, the dynamic model of a tentacle arm with continuum elements produced by flexible composite materials in conjunction with active-controllable electro-rheological fluids is analysed. Secondly, both problems, i.e. the position con...