It is a high-powered micro-computer control system which consists of a single chip micro-computer 87C552, a DSP device TMS320C30, a double ports RAM IDT7132 and otherwise.
It is a high powered micro computer control system which consists of a single chip micro computer 87C552,a DSP device TMS320C30,a double ports RAMIDT7132 and othervise.
The data's collateral communicationsare achieved by using double ports RAM IDT7130. Two hysteresis regulators are used as current regulators and double modules controller combined Bang-Bang control with PI controlas speed regulator.
This paper introduces design of LED large screen display system based on Cyclone EP1C6 and SPCE061A. With the double ports RAM and scan control based on FPGA, the system successfully solves some problems in traditional LED large screen design, such as the complexity of control system and poor reliability.
Depending on the characteristics of CCD module output data,the image collecting and processing system is put forward. The system is based on CPLD、DIMM-PC、double ports RAM chip and other circuits.
In this paper, a solution of high-speed data collection card is designed, which is based on PC104 ISA bus using double ports RAM chips and storage way of circular FIFO queue.
In the inner storage area,the secondary chip LSPM2 based on PROFIBUS-DP protocol with double ports RAM and MPU plots out the process reflection area of I/O point by means of process reflection. Data exchange between the primary station and the bottom I/O point is then realized.
In the inner storage area, the secondary chip LSPM2 based on PROFIBUS- DP protocol with double ports RAM and MPU plots out the process image area of I/O point through the method of process image. This can implement supervising the data exchange between the primary sta- tion and the bottom I/O point.
The board is the intelligent channel based on the PC104 bus and links the up and down computer to communicate for using the double ports RAM , the board solves the defect that the jacquard loom could not communicate with the computer directly and also raise the communication speed between the CPU.
The main research object of the thesis is inlet port of 4112 four valves diesel intake and exhaust system, it studies the intake process in the double ports of the four valves diesel and the flow status in cylinder.
Once master trigger event appears,the time distribution and amount of correlating events (neutron burst) can be recorded in the double ports memory buffer in 128 μs period.
Notonly itcan provide double ports,but also the WDM star networks composed of the complex star couplers have the great flexibility of networking. Its capacities can be expanded conveniently and smoothly on line. So,the complex star couplers can efficiently solve the capacity problem of WDM star single- hop network and rise the property to price ratio of WDM star net- works.
This paper introduced a model method for designing the double ports in a 4-valve diesel engine, namely the realization of the 3-dimension model for port by the application of reverse engineering, and the realization of the 3-dimensional numerical simulation in port-valve-cylinder by the use of CFD software FIRE. The flow result calculated in Fire is in good agreement with the measurement in the port rig.
The core of this control system is TMS320VC5402 DSP, which has an excellence processing performance. This design use double ports RAM to communicate with MCU, and use the DSP's HPI interface to communicate with PC. This design had been used in practice with in flexible display effect and high transfers speed.
A CNC system developed based on a micro computer platform is an important trend of the present CNC technology. The present state of CNC systems is analyzed, the possibility and necessity of developing the CNC system based on the PC platform are reported. The software and hardware structures, and work principles of the Superman CNC system based on the PC platform are discussed. Double CPUs are used to control the system, double ports RAM, parallel port interrupt and count style etc. are ad...
The special circuit and its working procedure for measurement of time distribution of neutron bursts in the thermal cycle of metal(Ti) absorbed in pressurized deuterium gas are described in the paper.Once master trigger event appears,the time distribution and amount of correlating events (neutron burst) can be recorded in the double ports memory buffer in 128 μs period.The random data of uncorrelating events can be recorded regularly also.The resolution ability of time distribution is ≥0.5 μs, ...
A fully digitalized VVVF vector-controlled system with the double 80c196KC single-chip computers used as main controllers is presented. The data's collateral communicationsare achieved by using double ports RAM IDT7130. Two hysteresis regulators are used as current regulators and double modules controller combined Bang-Bang control with PI controlas speed regulator. Experimental results show that the hardware and softeware design of thesystem is reasonable the speed adjusting charact...