针对三冗余机电静压伺服系统的研制需求,设计了基于双核全可编程片上系统(All Programmable System on Chip,APSoC)技术的多总线三冗余伺服控制驱动器。通过数字总线实现子控制驱动模块之间信息共享,采用IP核技术实现硬件加速、多电机...针对三冗余机电静压伺服系统的研制需求,设计了基于双核全可编程片上系统(All Programmable System on Chip,APSoC)技术的多总线三冗余伺服控制驱动器。通过数字总线实现子控制驱动模块之间信息共享,采用IP核技术实现硬件加速、多电机高速并行控制;通过试验验证多电机控制的同步性能和测量细节全还原技术;采用多种温度、压力传感器、过流保护电路等构建伺服系统健康网络体系,结合余度表决和故障切除逻辑搭建了三冗余控制驱动平台,对多任务的不同实时性需求分配任务等级,双核协同工作,研制的产品实物通过了系统验证。展开更多
A method based on programmable system-on-chip(PSoC)is proposed to realize high resolution stepping motion control of liner displacement mechanism driven by traveling wave rotary ultrasonic motors(TRUM).Intelligent con...A method based on programmable system-on-chip(PSoC)is proposed to realize high resolution stepping motion control of liner displacement mechanism driven by traveling wave rotary ultrasonic motors(TRUM).Intelligent controller of stepping ultrasonic motor consists of PSoC microprocessor.Continuous square wave signal is sent out by the pulse width modulator(PWM)module inside PSoC,and converted into sinusoidal signal which is essential to the motor′s normal working by power amplifier circuit.Subsequently,signal impulse transmission is realized by the counter control break,and the stepping motion of linear displacement mechanism based on TRUM is achieved.Running status of the ultrasonic motor is controlled by an upper computer.Control command is sent to PSoC through serial communication circuit of RS-232.Relative program and control interface are written in LabView.Finally the mechanism is tested by XL-80 laser interferometer.Test results show that the mechanism can provide a stable motion and a fixed step pitch with the displacement resolution of 6nm.展开更多
A signal processing scheme for a programmable system-on-chip(PSoC)based human body infrared tracking system is described.The purpose of this project is to convert the analog signal from a passive infrared(PIR)sensor t...A signal processing scheme for a programmable system-on-chip(PSoC)based human body infrared tracking system is described.The purpose of this project is to convert the analog signal from a passive infrared(PIR)sensor to a digital signal which will be used to calculate the correct position of a human body.This paper covers the analog design with PSoC,the analog to digital conversion and the software to eliminate noise.展开更多
There are varieties of embedded systems in the world. It is a big challenge to optimize the instruction sets of System on Chips (SoCs) according to different systems' working environments. The idea of programmable...There are varieties of embedded systems in the world. It is a big challenge to optimize the instruction sets of System on Chips (SoCs) according to different systems' working environments. The idea of programmable instruction set is an effective method to gain embedded system's re-configurability. This letter presents a logic module for Java processor to be capable of using programmable instruction set. Cost (area, power, and timing) of the module is trivial. Such module is also reusable for other embedded system solutions besides Java systems.展开更多
Electron cyclotron resonance heating (ECRH) system is one of the most important Tokamak auxiliary heating methods. However, there are growing demands for ECRH system as the physical experiments progress which meanwhil...Electron cyclotron resonance heating (ECRH) system is one of the most important Tokamak auxiliary heating methods. However, there are growing demands for ECRH system as the physical experiments progress which meanwhile adds the difficulty of designing and building the control system of its power source. In this paper, the method of designing a control system based on Single Chip Microcomputer (SCM) and Field Programmable Gate Array (FPGA) is introduced according to its main requirements. The experimental results show that the control system in this paper achieves the conversion of different working modes, gets exact timing, and realizes the failure protection in 10us thus can be used in the ECRH system.展开更多
A memory and driving clock efficient design scheme to achieve WCDMA high-speed channel decoder on a single XILINX’ XVC1000E FPGA chip is presented. Using a modified MAP algorithm, say parallel Sliding Window logarith...A memory and driving clock efficient design scheme to achieve WCDMA high-speed channel decoder on a single XILINX’ XVC1000E FPGA chip is presented. Using a modified MAP algorithm, say parallel Sliding Window logarithmic Maximum A Posterior (PSW-log-MAP), the on-chip turbo decoder can decode an information bit by only an average of two clocks per iteration. On the other hand, a high-parallel pipeline Viterbi algorithm is adopted to realize the 256-state convolutional code decoding. The final decoder with an 8×chip-clock (30 72MHz) driving can concurrently process a data rate up to 2 5Mbps of turbo coded sequences and a data rate over 400kbps of convolutional codes. There is no extern memory needed. Test results show that the decoding performance is only 0 2～0 3dB or less lost comparing to float simulation.展开更多
文摘针对三冗余机电静压伺服系统的研制需求,设计了基于双核全可编程片上系统(All Programmable System on Chip,APSoC)技术的多总线三冗余伺服控制驱动器。通过数字总线实现子控制驱动模块之间信息共享,采用IP核技术实现硬件加速、多电机高速并行控制;通过试验验证多电机控制的同步性能和测量细节全还原技术;采用多种温度、压力传感器、过流保护电路等构建伺服系统健康网络体系,结合余度表决和故障切除逻辑搭建了三冗余控制驱动平台,对多任务的不同实时性需求分配任务等级,双核协同工作,研制的产品实物通过了系统验证。
基金supported by the National Natural Science Foundation of China(Nos.50905085,91116020)the National Science Foundation for Post-Doctoral Scientists of China(No.2012M511263)the Aviation Science Foundation of China(No.20100112005)
文摘A method based on programmable system-on-chip(PSoC)is proposed to realize high resolution stepping motion control of liner displacement mechanism driven by traveling wave rotary ultrasonic motors(TRUM).Intelligent controller of stepping ultrasonic motor consists of PSoC microprocessor.Continuous square wave signal is sent out by the pulse width modulator(PWM)module inside PSoC,and converted into sinusoidal signal which is essential to the motor′s normal working by power amplifier circuit.Subsequently,signal impulse transmission is realized by the counter control break,and the stepping motion of linear displacement mechanism based on TRUM is achieved.Running status of the ultrasonic motor is controlled by an upper computer.Control command is sent to PSoC through serial communication circuit of RS-232.Relative program and control interface are written in LabView.Finally the mechanism is tested by XL-80 laser interferometer.Test results show that the mechanism can provide a stable motion and a fixed step pitch with the displacement resolution of 6nm.
文摘A signal processing scheme for a programmable system-on-chip(PSoC)based human body infrared tracking system is described.The purpose of this project is to convert the analog signal from a passive infrared(PIR)sensor to a digital signal which will be used to calculate the correct position of a human body.This paper covers the analog design with PSoC,the analog to digital conversion and the software to eliminate noise.
基金Supported by the Guangzhou Key Technology R&D Program (No.2007Z2-D0011)
文摘There are varieties of embedded systems in the world. It is a big challenge to optimize the instruction sets of System on Chips (SoCs) according to different systems' working environments. The idea of programmable instruction set is an effective method to gain embedded system's re-configurability. This letter presents a logic module for Java processor to be capable of using programmable instruction set. Cost (area, power, and timing) of the module is trivial. Such module is also reusable for other embedded system solutions besides Java systems.
文摘Electron cyclotron resonance heating (ECRH) system is one of the most important Tokamak auxiliary heating methods. However, there are growing demands for ECRH system as the physical experiments progress which meanwhile adds the difficulty of designing and building the control system of its power source. In this paper, the method of designing a control system based on Single Chip Microcomputer (SCM) and Field Programmable Gate Array (FPGA) is introduced according to its main requirements. The experimental results show that the control system in this paper achieves the conversion of different working modes, gets exact timing, and realizes the failure protection in 10us thus can be used in the ECRH system.
文摘A memory and driving clock efficient design scheme to achieve WCDMA high-speed channel decoder on a single XILINX’ XVC1000E FPGA chip is presented. Using a modified MAP algorithm, say parallel Sliding Window logarithmic Maximum A Posterior (PSW-log-MAP), the on-chip turbo decoder can decode an information bit by only an average of two clocks per iteration. On the other hand, a high-parallel pipeline Viterbi algorithm is adopted to realize the 256-state convolutional code decoding. The final decoder with an 8×chip-clock (30 72MHz) driving can concurrently process a data rate up to 2 5Mbps of turbo coded sequences and a data rate over 400kbps of convolutional codes. There is no extern memory needed. Test results show that the decoding performance is only 0 2～0 3dB or less lost comparing to float simulation.
