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【速搜问答】混合计算机是什么

问答 admin 7个月前 (12-01) 212次浏览 已收录 0个评论

汉英对照:
Chinese-English Translation:

混合计算机是把模拟计算机与数字计算机联合在一起应用于系统仿真的计算机系统。主要适用于一些严格要求实时性的复杂系统的仿真。例如在导弹系统仿真中,连续变化的姿态动力学模型由模拟计算机来实现,而导航和轨道计算则由数字计算机来实现。

Hybrid computer is a computer system that combines analog computer with digital computer and applies it to system simulation. It is mainly suitable for the simulation of some complex systems with strict real-time requirements. For example, in missile system simulation, the continuously changing attitude dynamic model is realized by analog computer, while navigation and orbit calculation are realized by digital computer.

混合计算机是把模拟计算机与数字计算机联合在一起应用于系统仿真的计算机系统。混合计算机出现于 20 世纪 70 年代。那时,数字计算机是串行操作的,运算速度受到限制,但运算精度很高;而模拟计算机是并行操作的,运算速度很高,但精度较低。把两者结合起来可以互相取长补短,因此混合计算机主要适用于一些严格要求实时性的复杂系统的仿真。例如在导弹系统仿真中,连续变化的姿态动力学模型由模拟计算机来实现,而导航和轨道计算则由数字计算机来实现。

Hybrid computer is a computer system that combines analog computer with digital computer and applies it to system simulation. Hybrid computers appeared in the 1970s. At that time, the digital computer was serial operation, the operation speed was limited, but the calculation accuracy was high; while the analog computer was parallel operation, the operation speed was very high, but the accuracy was low. Therefore, the hybrid computer is mainly suitable for the simulation of some complex systems with strict real-time requirements. For example, in missile system simulation, the continuously changing attitude dynamic model is realized by analog computer, while navigation and orbit calculation are realized by digital computer.

简介

brief introduction

混合计算机 【hybrid computer】可以进行数字信息和模拟物理量处理的计算机系统。混合计算机通过数模转换器和模数转换器将数字计算机和模拟计算机连接在一起。

Hybrid computer is a computer system that can process digital information and analog physical quantities. The hybrid computer connects the digital computer and the analog computer through a / D converter and a / D converter.

特点

characteristic

连接系统有时与模拟计算机合在一起被称为混合模拟计算机,它除了具有一般模拟计算机的运算部件外,还增加了逻辑部件(如与门、或门,非门,触发器、寄存器、计数器),以及高速数模转换器和高速模数转换器等。它们的输出和输入连接到一个附加的数字编排板上。 随着电子技术的不断发展,混合计算机主要应用于航空航天、导弹系统等实时性的复杂大系统中。

Connecting system is sometimes combined with analog computer, which is called hybrid analog computer. It has not only the operation components of general analog computer, but also logic components (such as and gate, or gate, not gate, trigger, register, counter), high-speed digital to analog converter and high-speed analog-to-digital converter. Their outputs and inputs are connected to an additional digital layout board. With the continuous development of electronic technology, hybrid computers are mainly used in aerospace, missile systems and other real-time complex systems.

混合计算机同时具有数字计算机和模拟计算机的特点:运算速度快、计算精度高、逻辑和存储能力强、存储容量大和仿真能力强。

Hybrid computer has the characteristics of both digital computer and analog computer: fast operation speed, high calculation accuracy, strong logic and storage capacity, large storage capacity and strong simulation ability.

工作原理

working principle

在混合计算机上操作时,来自模拟计算机的模拟变量通过模数转换器转换为数字变量,传送至数字计算机。同时,来自数字计算机的数字变量通过数模转换器转换为模拟信号,传送至模拟计算机。除了计算变量的转换和传送外,还有逻辑信号和控制信号的传送。用以完成并行运算的模拟计算机和串行运算的数字计算机在时间上同步。数字计算机每完成一帧运算,就与模拟计算机交换一次信息,修正一次数据,而在两次信息交换的时间间隔(帧)内,两种计算机都以前一帧的计算结果作为初值进行运算。这个时间间隔称为帧同步时间。对混合程序的设计,要求用户考虑模型在不同计算机上的分配、对帧同步时间的选择以及对连接系统硬件特性的了解等。

When operating on a hybrid computer, the analog variables from the analog computer are converted into digital variables through an analog-to-digital converter and transmitted to the digital computer. At the same time, the digital variables from the digital computer are converted into analog signals through a digital to analog converter and transmitted to the analog computer. In addition to the conversion and transmission of computational variables, there are also the transmission of logic signals and control signals. The synchronization of digital and analog operations on a computer. The digital computer exchanges information with the analog computer and corrects the data once every frame operation is completed. In the time interval (frame) between the two information exchanges, the calculation results of the previous frame of the two computers are used as the initial value for operation. This interval is called frame synchronization time. For the design of hybrid program, users are required to consider the allocation of models on different computers, the choice of frame synchronization time and the understanding of the hardware characteristics of the connecting system.

发展

development

现代混合计算机已发展成为一种具有自动编排模拟程序能力的混合多处理机系统。它包括一台超小型计算机、一两台外围阵列处理机、几台具有自动编程能力的模拟处理机;在各类处理机之间,通过一个混合智能接口完成数据和控制信号的转换与传送。这种系统具有很强的实时仿真能力,但价格昂贵。

The modern hybrid computer has developed into a hybrid multiprocessor system with the ability to automatically arrange simulation programs. It consists of a supercomputer, one or two peripheral array processors, and several analog processors with automatic programming capabilities. Among all kinds of processors, a hybrid intelligent interface is used to complete the conversion and transmission of data and control signals. This system has strong real-time simulation ability, but it is expensive.


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