电力系统中的电力元件（如发电机、线路等）或电力系统本身发生了故障危及电力系统安全运行时，能够向运行值班人员及时发出警告信号，或者直接向所控制的断路器发出跳闸命令以终止这些事件发展的一种自动化措施和设备。实现这种自动化措施的成套设备，一般通称为继电保护装置。
cpu中控制器的功能是什么　　控制器是整个CPU的指挥控制中心，由指令寄存器IR (InstructionRegister)、程序计数器　　PC (ProgramCounter)和操作控制器0C (OperationController)三个部件组成,对协调整个电脑有序工　　作极为重要。下面是小编给大家整理的一 些有关介绍,希望对大家有帮助! 　　cpu 中控制器的功能简单介绍　　(一)运算器　　1、算术逻辑运算 单元ALU(Arithmetic and Logic Unit) 　　ALU主要完成对二进制数据的定点算术运算(加减乘除)、逻辑运算(与或非异或)以及移位操作。在　　某些CPU中还有专门]用于处理移位操作的移位器。　　通常ALU由两个输入端和一一个输出端。整数单元有时也称为IEU(Integer Execution Unit)。我们通　　常所说的"CPU是XX 位的”就是指ALU所能处理的数据的位数。　　2、浮点运算单元FPU(Floating Point Unit) 　　FPU 主要负责浮点运算和高精度整数运算。有些FPU还具有向量运算的功能,另外- -些则有专门]的　　向量处理单元。　　3、通用寄存器组. 　　通用寄存器组是一组快的存储器,脒保存参加运算的操作数和中间结果。　　在通用寄存器的设计上, RISC与CISC有着很大的不同。CISC的寄存器通常很少, 主要是受了当时　　硬件成本所限。比如x86 指令集只有8个通用寄存器。所以, CISC的CPU执行是大多数时间是在访问存　　储器中的数据,而不是寄存器中的。这就拖慢了整个系统的速度。而 RISC系统往往具有非常多的通用　　寄存器,并采用了重叠寄存器窗口和寄存器堆等技术使寄存器资源得到充分的利用。　　对于x86指令集只支持8个通用寄存器的缺点, Intel和AMD的新CPU都采用了-种叫做”寄存　　器重命名”的技术,这种技术使x86CPU的寄存器可以突破8个的限制,达到32个甚至更多。不过,相　　对于RISC来说,这种技术的寄存器操作要多出一一个时钟周期,用来对寄存器进行重命名。　　4、专用寄存器　　专用腾存器通常是一些状态寄存器 ,不能通过程序改变,由CPU自己控制,表明某种状态。　　(二)控制器　　运算器只能完成运算,而控制器用于控制着整个CPU的工作。　　1、指令 控制器　　指令控制器是控制器中相当重要的部分,它要完成取指令、分析指令等操作,然后交给执行单元　　(ALU或FPU)来执行,同时还要形成下一条指令的地址。　　2、时序控制器　　时序控制器的作用是为每条指令按时间顺序提供控制信号。时序控制器包括时钟发生器和倍频定义　　单,其中时钟发生器由石英晶体振荡器发出非常稳定的脉冲信号, 就是CPU的主频;而倍频定义单元　　则定义了CPU主频是存储器频率(总线频率)的几倍。　　3、总线控制器　　总线控制器主要用于控制CPU的内外部总线,包括地址总线、数据总线、控制总线等等。　　4、中断控制器　　中断控制器用于控制各种各样的中断请求,并根据优先级的高低对中断请求进行排队,逐个交给　　CPU 处理。　　1、cpu控制器的功能是分析指令并发出相应的控制信号。CPU包括运算逻辑部件、寄存器部件和控制部件等。　　2、中央处理器 (CentralProcessingUnit)，简称CPU，是1971年推出的一个计算机的运算核心和控制核心，是信息处理、程序运行的终执行单元。CPU包含运算逻辑部件、寄存器部件和控制部件等，并具有处理指令、执行操作、控制时间、处理数据等功能。其自产生以来，在逻辑结构、运行效率以及功能外延上取得了巨大发展。寄存器部件，包括通用寄存器、专用寄存器和控制寄存器。通用寄存器又可分定点数和浮点数两类，它们用来保存指令执行过程中临时存放的寄存器操作数和中间(或终)的操作结果。通用寄存器是中央处理器的重要组成部分，大多数指令都要访问到通用寄存器。通用寄存器的宽度决定计算机内部的数据通路宽度，其端口数目往往可影响内部操作的并行性。　　CPU的主要功能有四个，分别是顺序控制、操作控制、时间控制、数据加工。　　 　　1、顺序控制：这是指控制程序中指令的执行顺序。程序中的各指令之间是有严格顺序的，必须严格按程序规定的顺序执行，才能保证计算机工作的正确性。　　2、操作控制：一条指令的功能往往是由计算机中的部件执行一系列的操作来实现的。CPU要根据指令的功能，产生相应的操作控制信号，发给相应的部件，从而控制这些部件按指令的要求进行动作。　　3、时间控制：时间控制就是对各种操作实施时间上的定时。在一条指令的执行过程中，在什么时间做什么操作均应受到严格的控制。只有这样，计算机才能有条不紊地自动工作。　　4、数据加工：即对数据进行算术运算和逻辑运算，或进行其他的信息处理。　　拓展资料：　　CPU(Central Processing Unit)，即中央处理器。An automated measure and equipment that can issue timely warning signals to the operating personnel on duty or directly issue tripping commands to the controlled circuit breakers to terminate the development of these events when faults occur in power components (such as generators, lines, etc.) or the power system itself that endanger the safe operation of the power system. The complete set of equipment for implementing this automation measure is generally referred to as relay protection devices.

What is the function of the controller in the CPU? The controller is the command and control center of the entire CPU. It consists of three parts: instruction register (IR), Program Counter (PC), and Operation Controller (0C). It is very important to coordinate the orderly work of the entire computer. Below are some relevant introductions organized by the editor for everyone, hoping to be helpful! A brief introduction to the functions of the controller in the CPU (1) Arithmetic and Logic Unit (ALU): ALU mainly performs fixed-point arithmetic operations (addition, subtraction, multiplication, and division), logical operations (AND or non XOR), and shift operations on binary data. In some CPUs, there are also shifters specifically designed to handle shift operations. Usually, an ALU consists of two inputs and one output. An integer execution unit is sometimes referred to as an IEU (Integer Execution Unit). The commonly used term 'CPU is XX bits' refers to the number of bits of data that ALU can process. 2. Floating Point Unit (FPU) FPU is mainly responsible for floating-point operations and high-precision integer operations. Some FPUs also have vector operation capabilities, while others have specialized vector processing units. 3. Universal register set A universal register set is the fastest set of memory that stores the operands and intermediate results involved in the operation. RISC and CISC have significant differences in the design of general-purpose registers. CISC usually has very few registers, mainly due to the limitations of hardware costs at that time. For example, the x86 instruction set only has 8 general-purpose registers. So, CISC's CPU execution is mostly focused on accessing data in memory, rather than registers. This slows down the entire system. RISC systems often have a large number of general-purpose registers and utilize techniques such as overlapping register windows and register stacks to fully utilize register resources. For the disadvantage of only supporting 8 general-purpose registers in the x86 instruction set, the latest CPUs of Intel and AMD have adopted a technology called "register renaming", which allows the x86 CPU to break through the limit of 8 registers and reach 32 or more. However, compared to RISC, this technology requires an additional clock cycle for register operations to rename registers. 4. Special registers are usually state registers that cannot be changed by a program and are controlled by the CPU to indicate a certain state. （2） The controller arithmetic unit can only perform calculations, while the controller is used to control the entire CPU's operation. 1. The instruction controller is a very important part of the controller, which needs to complete operations such as fetching and analyzing instructions, and then hand them over to the execution unit (ALU or FPU) for execution. At the same time, it also needs to form the address of the next instruction. 2. The function of a timing controller is to provide control signals in chronological order for each instruction. The timing controller includes a clock generator and a frequency doubling definition unit, where the clock generator emits a very stable pulse signal from a quartz crystal oscillator, which is the main frequency of the CPU; The frequency doubling definition unit defines how many times the CPU main frequency is the memory frequency (bus frequency). 3. The bus controller is mainly used to control the internal and external buses of the CPU, including address bus, data bus, control bus, and so on. 4. The interrupt controller is used to control various interrupt requests and queue them according to their priority, handing them over to the CPU for processing one by one. 1. The function of the CPU controller is to analyze instructions and issue corresponding control signals. The CPU includes operational logic components, register components, and control components. 2. The Central Processing Unit, also known as the CPU, is a computing and control core of a computer introduced in 1971. It is the ultimate execution unit for information processing and program execution. The CPU includes operational logic components, register components, and control components, and has functions such as processing instructions, executing operations, controlling time, and processing data. Since its inception, it has made significant progress in logical structure, operational efficiency, and functional extension. Register components, including general-purpose registers, specialized registers, and control registers. General purpose registers can also be divided into fixed point and floating point numbers, which are used to store register operands temporarily stored during instruction execution and intermediate (or final) operation results. Universal registers are an important component of the central processing unit, and most instructions need to access them. The width of a general-purpose register determines the width of the data path inside a computer, and the number of ports can often affect the parallelism of internal operations. The main functions of the CPU are sequence control, operation control, time control, and data processing. 1. Sequential control: This refers to the execution order of instructions in the control program. There is a strict order between the instructions in the program, and it is necessary to strictly follow the sequence specified in the program to ensure the correctness of computer operation. 2. Operational control: The function of an instruction is often achieved by a series of operations performed by components in a computer. The CPU needs to generate corresponding operation control signals based on the function of the instructions, send them to the corresponding components, and control these components to act according to the requirements of the instructions. 3. Time control: Time control is the implementation of timing for various operations. During the execution of an instruction, there should be strict control over what operations are performed at any time. Only in this way can computers work systematically and automatically. 4. Data processing: refers to performing arithmetic and logical operations on data, or performing other information processing. Extended information: CPU (Central Processing Unit), also known as the central processing unit.