The defects of the servo unit are occurred with the increasing application of servo motor and control requirements of the specific application *** with the characteristics of servo system,the practical application of ...
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The defects of the servo unit are occurred with the increasing application of servo motor and control requirements of the specific application *** with the characteristics of servo system,the practical application of servo unit under loading cyclical output is studied for the demand in this *** control module is designed and completed on the base of principle of proportional-integral *** control system is completed combining with the basic control characteristics of servo *** inadequate of control is made up for the servo unit by PI *** need of practical applications is finally *** system is confirmed with good tendency,static property and good control performance through test results.
In order to design PV inverter auxiliary power supply, circuit with isolated single-ended anti-flyback current-control mode,is obtained by experimental design of the circuit for the conclusions of PV Inverter. This ex...
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In order to design PV inverter auxiliary power supply, circuit with isolated single-ended anti-flyback current-control mode,is obtained by experimental design of the circuit for the conclusions of PV Inverter. This experiment involves some of the basic switching power supply design specifications,the transformer core and winding design,feedback and regulation *** auxiliary switching power supply is already used in the inverter,which is high stability,output ripple is small and the phenomenon of transformer no fever,meets the design objectives.
The analytical algorithm of program quaternion is studied,aiming at the problem of the arbitrary spacecraft attitude-adjusting *** also provides the analytical constructor method of the program quaternion for any give...
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The analytical algorithm of program quaternion is studied,aiming at the problem of the arbitrary spacecraft attitude-adjusting *** also provides the analytical constructor method of the program quaternion for any given initial quaternion and angle velocity,terminal quaternion and angle *** advantages of this method are as follows:(1)Good *** of the initial and terminal conditions are arbitrary;(2)Simple *** calculation process only involves the simple algebraic operation;(3)Easy to *** using the program quaternion model,the time consumption in the process of spacecraft attitude adjustment and the maximum angular velocity can be optimized *** to the Mathematical simulation results,the program quaternion tracking can be realized by a simple PD control law.
In this paper, H∞ control for single linear inverted pendulum with input time delay is studied, which is an unavoidable factor influencing the stability of inverted pendulum system. An H∞ feedback controller of the ...
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In this paper, H∞ control for single linear inverted pendulum with input time delay is studied, which is an unavoidable factor influencing the stability of inverted pendulum system. An H∞ feedback controller of the system has been obtained by using Lyapunov function combined with linear matrix inequality method, and the criterion can be readily tested by using standard numerical software. And the uncertainties are also considered. The simulation results show the availability of the proposed method.
A tuberculosis(TB) model with treatment and self-cure is investigated. The basic reproduction number is found and its epidemiological interpretation is given. It has been shown that the dynamics of the model is determ...
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A tuberculosis(TB) model with treatment and self-cure is investigated. The basic reproduction number is found and its epidemiological interpretation is given. It has been shown that the dynamics of the model is determined by its basic reproductive number. If the basic reproduction number is less than or equal to one, there exists only the disease-free equilibrium which is globally asymptotically stable, and the disease dies out eventually. When the basic reproduction number exceeds one, there exists a unique endemic equilibrium which is uniformly persistent. At last, some measures to control the spread of TB are discussed.
FPGA has been used in many robotics projects for real-time image processing. It provides reliable systems with low execution time and simplified timing analysis. Many of these systems take a lot of time in development...
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FPGA has been used in many robotics projects for real-time image processing. It provides reliable systems with low execution time and simplified timing analysis. Many of these systems take a lot of time in development and testing phases. In some cases, it is not possible to test the system in real environments very often, due to accessibility, availability or cost problems. This paper is the result of a case study on vision systems for two robotics projects in which the vision team consisted of seven students working for six months fulltime on developing and implementing different image algorithms. While FPGA has been used for real-time image processing, some steps have been taken in order to reduce the development and testing phases. The main focus of the project is to integrate different testing methods with FPGA development. It includes a component based solution that uses a two-way communication with a PC controller for system evaluation and testing. Once the data is acquired from the vision board, the system stores it and simulates the same environment that has been captured earlier by feeding back the obtained data to FPGA. This approach addresses and implements a debugging methodology for FPGA based solutions which accelerate the development phase. In order to transfer massive information of images, RMII which is an interface for Ethernet communication, has been investigated and implemented. The provided solution makes changes easier, saves time and solves the problems mentioned earlier.
This paper presents research and simulation analysis on kinematics and dynamics problem based on the JE 6-axis robot researched and developed independently by Johnsonelectric ***,the robot kinematics model is establis...
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This paper presents research and simulation analysis on kinematics and dynamics problem based on the JE 6-axis robot researched and developed independently by Johnsonelectric ***,the robot kinematics model is established and robot workspace is obtained based on the robot kinematics analysis by means of Denavit-Hartenberg ***,robot system model is founded in software Simulation X and mechanical system and control system are analyzed through *** on simulation result of SimulationX which includes every property of components in the model of SimulationX,the performance and feasibility of the 6-axis robot model can be clearly evaluated and verified.
Aiming at computing the force feel to be simulated at real time, thrust lever control loading system39;s simulation model is set by software called Sim Mechanics after its control mechanism being analyzed. The dynam...
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Aiming at computing the force feel to be simulated at real time, thrust lever control loading system's simulation model is set by software called Sim Mechanics after its control mechanism being analyzed. The dynamic characteristics of control systems and model torque are studied based on the simulation model. Then the counter potential, primary element to cause the surplus torque, is pointed out according to the dynamic characteristics of control. To make the loading system not only flow the model torque precisely but also retrain surplus torque effectively, the low frequency of the current loop is designed due to frequency spectrum of counter potential and follow-up component in model torque, while the medium frequency is on basis of the step component in model torque. Finally, the reasonableness of the designed current loop is verified by computer simulation of the torque output by motor and loading torque.
In this paper,by using ARM Cortex-M3 embedded high-performance processor,we implement a remote monitoring system for a solar power station with five essential functions which are telemetry,remote control,remote signal...
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In this paper,by using ARM Cortex-M3 embedded high-performance processor,we implement a remote monitoring system for a solar power station with five essential functions which are telemetry,remote control,remote signal,remote dispatch and remote *** this system,Data Acquisition Unit,Data Transmit Unit and Monitoring Centre Unit are combined to form this remote monitoring *** remote intelligent monitoring system enables power station’s operators to check the station status anytime and anywhere through the internet or cell phone,and they can send pre-defined command in the special conditions or doing supervision *** system improves the monitoring system’s integrity,reliability,flexibility and intellectuality.
This paper introduces an approach to analyze the power and energy consumption of a many-core *** investigation has been done by using the Intel SCC system as an experimental *** approach is to collect the time and pow...
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This paper introduces an approach to analyze the power and energy consumption of a many-core *** investigation has been done by using the Intel SCC system as an experimental *** approach is to collect the time and power profiling of an executing application on the Intel SCC *** then,we find the total energy consumed for the entire *** studied the effects of power and energy consumption in many-core systems by varying different hardware configuration parameters such as number of cores,clock frequency and voltage ***,the many-core system can be explored for its scalability,fitness in operational cost and performance.
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