In the latest hgh-speed and hgh-acceleration NC machine tools, the structural vibration is one of the most critical factors to deteriorate the machine's contouring performance. Particularly on such a machine, the parameters in a CNC servo control system must be carehlly tuned, since too high response of the latest CNC units often causes severe structural vibration. Ths paper presents a practica...

The focus of this work is to design, develop and implement enhanced control and competitive robot arm thick and short cost. Design of four degree of freedom and talent of robot arm is to complete the accurate and simple tasks, such as optical materials processing, will be integrated into the mobile platform, as an assistant for the industrial labor force. Between the robot arm equipped with wea...

Due to nonlinear uncertainties of the electric scooter such as nonlinear friction force of the transmission belt and clutch, these will lead to degenerate tracking responses in command current and speed of the permanent magnet synchronous motor (PMSM) servo-driven electric scooter. In this study a novel hybrid recurrent wavelet neural network (HRWNN) control system is proposed to raise robustne...

The effect of radiation pressure on the stability of Fabry-Perot cavities with hanging mirrors is investigated. Such cavities will form an integral part of the laser interferometric gravitational-wave detectors that are being constructed around the globe. The mirrors are hung by means of a pendulum suspension and are locked by servo controls. We assume a realistic servo-control transfer functio...

The paper concerns diagnostics of servo-drives. The proposed computer-assisted way of the feedback signals measurements can be applied as a simple and low cost solution useful for inspection and on-line monitoring of the servo-drives motional accuracy and also data collecting for later analysis. Despite the fact that the feedback devices installed in the servo-drives can be different the square...

Stack-type piezoelectric actuators, which usually consist of several ceramic layers connected in series, are widely used in piezoelectric direct-drive servo valves (PDDSV). However, poor pulling force capacity of this kind of actuators affects the performances of the direct-drive servo valves. This article presents a new type of PDDSV, whose spool-driving mechanism is composed of a set of indep...

The DC motor is a key element for servo system, and the control quality of control system would be seriously affected by the nonlinear, the parameter uncertain, the inaccurately modeling and some uncertain existing in servo system. So it is very difficult to satisfy control requirements by using the traditional control method. In this paper, the sliding mode control algorithm with reaching law ...

The integrated design was introduced about the pitching part of airborne radar servo system. The paper analyzed both the servo system model and the dynamic character of this system. Then the research about parameter optimization and simulation had been done by using the Matlab. The electromechanical coupling model and the optimization model were built up based on model of mechanism transmission...

W e derived a quant i tat ive measure of t he ability of a camera setup t o observe the changes in image features due t o relative m o t i o n [ I O ] . Thrs measure of motion perceptibility has m a n y applications in evaluating a robot hand /eye setup w i th respect t o t h e ease of achieving vision-based control, and steering away f r o m singular configurat ions. M o t i o n perceptibil i ...

The friction is detrimental to the normal work of the servo system, but the friction mechanism is very complicated. In this paper, Tustin friction model is used as the friction parameter identification, reflecting the phenomenon of friction in the system, and laying the foundation for the friction compensation. Tustin model is a nonlinear friction one, and the friction properties can be reflect...