Advanced Materials Research Vol. 462

Abstract: With the fast development of modern technology, the scale and the specification have been improved. The traditional instrument cannot meet the increasing demand of application. Therefore, the virtual instrumentation has become the trend of the future instrument. The paper has pointed out the advantages of virtual instrumentation of high performance, high expansibility, less exploring time and excellent integration. The design takes the modbus as the communication method to acquire the parameters of power instrument on the basis of PM500, Sepam20, Sepam40 and MOXA PCI RS-485 data acquisition card. It can also realize the storage and query function of data, as well as the steps of human-machine interface full of humanness, which has construct a high efficiency, precise Power Monitoring&Controlling System. It has passed testing, which can meet the needs of customers with high practical value.

Abstract: This paper describes a control framework that uses UKF to estimate unknown parameters, which has significant physiological functions in neuron model, from heavily noisecorrupted time series of active potential and choose the estimated parameters as control vector enables the control purposes of firing patterns transition. We apply this control strategy to the firing patterns from chaotic spiking to periodic one in the Chay model. It has been demonstrated that this framework is highefficiency and wide potential applications to various system in biology.

Abstract: Permanent magnet linear synchronous motors (PMLSM) offer several advantages over their rotary counterparts in many precision manufacturing applications requiring linear motion, which can achieve a much higher speed and a higher position accuracy. However, linear motors are more sensitive to disturbance and parameter variations. Furthermore, the linear motor systems are subject to significant nonlinear effects due to friction and force ripple. A sliding mode controller with an adaptive disturbance observer is processed to achieve high accuracy in the presence of external disturbance and parameter uncertainty. The position control for the gringding machine of a PMLSM feed drive using the proposed control strategies is illustrated. Simulation results show that the proposed controllers provide high-performance dynamic characteristics and are robust with regard to external load disturbance.

Abstract: Design of manipulator control system for injection molding machine is raised in this paper. One servo motor and 32 pairs of IO of pneumatic actuators are applied to realize motion control towards manipulator. Functions such as precisely locating, multi-position start/stop and automatic mode operation are achieved through collaborative work of CPU and CPLD. Finally, the result indicates the control system is reliable and efficient.

Abstract: In this paper, we present an object-oriented C++ library for robotic manipulator control and simulation, THRControl, which is inherited from Qt and VTK. The library package has advantages include support cross-platform applications; high flexibility and high computational efficiency meet the need of computations required in robot control such as forward kinematics, inverse dynamics, and jacobian. The experimental results show that it is very easy is construct a user-friendly manipulator control and simulation system.

Abstract: According to the aircraft control load power model, using electric power servo loading approach in designing the aircraft simulator electric control loading system, introduced a control loading system works as well as excess power causes. According to the direct driving torque control servo motor applied characteristics of double by force, and the compensation of hybrid control strategy. Using force is the inner loop, current loop using. At the same time as manipulate load system, we can adopt " Structure invariability principle " compensation strategies that speed compensation measures to abate force to influence on the performance of the control system. Experiment measures to eliminate that speed compensation system of plus torque, and good results have been achieved. Simulation results show that, using the hybrid control strategy can effectively eliminate the surplus torque control steady-state error, tracking precision, to force the requirements for the construction, performance control principle prototype system load provides data parameters and the control strategy.

Abstract: In this paper, the mathematical model of injection type hybrid active filter is established, then the current one-step predictive control is introduced with model predictive control (MPC) technology. PI controller is used in DC voltage control and its parameter is gotten by particle swarm optimizer (PSO) algorithm. Finally, the simulation model of IHAPF is established in MATLAB/SIMULINK, and the control method presented in this paper has better dynamic and static performance which is verified by the simulation results.

Abstract: Industrial boiler steam pressure is an important measure of boiler normal operation. Since there is delay and inertial part, single-loop PID control is difficult to achieve good dynamic characteristics. By analyzing the characteristics of the steam pressure controlled object, this paper presents a fuzzy adaptive PID control based on the cascade control system. Finally, in order to analyze the effect of the control system, mathematical model was constructed by MATLAB simulation to compare fuzzy adaptive PID cascade control with conventional PID control. The results prove that the former has a good control effect.

Abstract: Introduced to predict average current control PFC Boost converter structure, and analyzes its operating principle, the average current control strategies equation is given by derivation. And a model of predict average current control PFC Boost converter is gained using Matlab Simulink simulation software and SimPowerSystems toolbox. Simulation results show that the predicted average current control PFC Boost converter with control circuit is simple and reliable, high input power factor, anti-interference ability, current harmonic distortion, etc, and is forecast to average voltage control strategy for the active power factor correction provides a novel, simple and feasible control methods.

Abstract: The modular design of restaurant service autonomous mobile robot control system has been done, and the system adopted distributed control, the control system of the host (such as computer module) through the unity of the bus and protocols for coordination of each module. The control system distributed in the three modules of the power and driver module (including power management unit, motion control unit, and drive unit), the sensor module (various sensors, etc.), and control computer modules. Then, using VC++ 6.0 developed the software of the control system, and the software is divided into user-level, decision making control layer, sensing/underlying decision making, and movement execution layer. Communication between layers and layers are standard physical layer and protocol layer, so each layer has a highly scalable, the user is free to increase the user's own equipment and control procedures just in accordance with the standard physical layer and protocol specification.