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A compensator is a controller meant to improve characteristics of the open-loop plant so that it can safely be used with feedback control.
For example, there is a (parasitic) feedback system in a commercial audio system (e.g., in a theater) formed from a microphone, the soundboard connected to it, and the speakers in the theater connected to the soundboard. If the microphone is positioned in certain locations near the speakers and there is enough gain in the system, a single tone (and possibly its higher harmonics) can be reinforced by the feedback system causing it to grow and grow until it is deafeningly loud.
It is then the sound engineers' job to "compensate" this system at the soundboard by adjusting the system's gain and phase characteristics around that particular frequency. So here, the soundboard is certainly a controller (compensation is a control topic), but the controller is not responsible for tracking or regulation. Instead, it is enforcing stability of the closed-loop system at all frequencies.
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What is the difference between conditional and unconditional transfer of control?
Conditional - Imposing, depending on, or containing a condition. Unconditional - without conditions or limitations.
What is the difference between a critical point and control point?
A Control Point or "CP" is any step in the flow of food where a physical, chemical or biological hazard can be controlled. Where as A Critical Control Point or "CCP" is the last step where you can intervene to prevent, eliminate or reduce a hazard to an acceptable limit.
What are the difference of control point and critical control point?
A control point is any step in a process where controls can be applied to ensure food safety and quality, but it may not directly prevent or eliminate hazards. In contrast, a critical control point (CCP) is a specific point in the process where a control measure is essential to prevent, eliminate, or reduce a food safety hazard to an acceptable level. Essentially, all CCPs are control points, but not all control points are CCPs. Identifying CCPs is crucial in developing effective food safety management systems, such as HACCP.
What is the difference between immediate and deferred gratification?
Immediate gratification refers to the desire for a reward or pleasure that is instantly available, often leading to impulsive decisions. In contrast, deferred gratification involves delaying immediate rewards for a more significant benefit in the future, requiring self-control and patience. This concept is often associated with long-term goal achievement, as individuals who can postpone immediate pleasures are more likely to succeed in their endeavors.
Difference between error control and flow control?
Flow Control:is one important design issue for the Data Link Layer that controls the flow of data between sender and receiver.In Communication, there is communication medium between sender and receiver. When Sender sends data to receiver than there can be problem in below case :1) Sender sends data at higher rate and receive is too sluggish to support that data rate.To solve the above problem, FLOW CONTROL is introduced in Data Link Layer. It also works on several higher layers. The main concept of Flow Control is to introduce EFFICIENCY in Computer Networks.Error Control:Network is responsible for transmission of data from one device to another device. The end to end transfer of data from a transmitting application to a receiving application involves many steps, each subject to error. With the error control process, we can be confident that the transmitted and received data are identical. Data can be corrupted during transmission. For reliable communication, error must be detected and corrected.Error control is the process of detecting and correcting both the bit level and packet level errors.Types of ErrorsSingle Bit ErrorThe term single bit error means that only one bit of the data unit was changed from 1 to 0 and 0 to 1.Burst ErrorIn term burst error means that two or more bits in the data unit were changed. Burst error is also called packet level error, where errors like packet loss, duplication, reordering. BY RAHUL SAGORE from IIPS, INDORE
What is the difference PLC controllers and DDC controllers?
[an entry level technician's opinion] PLC's or programmable logic controllers use current in terms of control, while DDC's or digital direct controllers use voltage variations to achieve control
What is the fundamental difference in control law between P controller and you controller?
the output of P controller depends only on the present state of the input, whereas the output of I controller depends on the whole history of the input. that is the fundamental difference between the control law of two controllers.
What is the difference between feedback and control?
difference between feedback and control
What has the author Thomas A Hughes written?
Thomas A. Hughes has written: 'Programmable Controllers, Fourth Edition (Resources for Measurement and Control)' 'Measurement and Control Basics (Resources for Measurement and Control Series)' 'Programmable controllers' -- subject(s): Programmable controllers 'Programmable Controllers (Resources for Measurement & Control)'
What is the major difference between control process and process control?
Difference between control process and process control is that system control process is typically the large scale version of where process control is used.
What is the difference between inventory control and inventory planning?
Their is no Difference
What are Drive controllers?
Drive controllers are certain cricuits that control drives like the hard disk
What is the difference between strategic control and financial control?
Define staregic control and financial control
Statistical process control?
Explain the difference between capability and control.
Difference between coordination and control mixed?
differentiate coordination and control
Need of program Logic controllers?
Program logic controllers are used to control the operation of most systems.
What is phase lead?
Phase lead refers to a situation in control systems where the output signal of a system leads the input signal in terms of phase, typically measured in degrees. This phenomenon is often associated with certain types of compensators or controllers, such as lead compensators, which are designed to improve system stability and transient response. By introducing phase lead, the system can achieve a higher gain margin and enhanced performance in response to changes in input. Essentially, phase lead helps in shaping the frequency response of control systems to meet specific design criteria.
