Control Systems

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Emission control system Malfunction

Emission control system Malfunction


The code P0446 is set when the engine computer recognizes a fault or restriction at the vent control part of the Evaporative emission control system (EVAP). The description of the fault varies between different car manufacturers, but one thing is common, the code P0446 doesn t directly point to a defective…
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Quality control system example

Quality control system example


Even if a company isn t concerned about producing a world-class product, quality still needs to be a primary goal. In this lesson, you ll learn about quality management systems - what they are, how they work, and why they are so important. What Is Quality? Quality, defined as superiority in kind, doesn t just happen. Think of a company that you believe is a good example of…


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HomeLink Wireless control system

HomeLink Wireless control system


The HomeLink® Wireless Control System is a great feature included with hundreds of models of cars, providing a convenient way to replace up to three handheld radio frequency (RF) transmitters used for controlling garage doors, security systems, and home lighting. However, most users of HomeLink® rarely use it for more than just controlling the garage door. HomeLink® learns…


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Air suspension control system

Air suspension control system


Controller Both systems come with the Air Lift Performance 3 controller, a device that is truly amazing to hold and to use. Free Mobile App Take full control of your 3H/3P system with a FREE mobile app with no additional hardware needed, for all compatible devices. Fully Integrated Manifold By combining the ECU, pressure manifold, and Bluetooth module into one compact unit…


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Video Lecture on control Systems

Video Lecture on control Systems


My course EEL 4652 Control Systems 1 (taught in Fall 2011) has 29 lecture videos (1 hour and 20 minutes each) that will be soon fully uploaded into So far (as of 12/6/2011) 29 lectures in ECHO format can be accessed via the course Blackboard page. Go to Use my guest account: [User Name: rothz_guest and Password: rothz ] to get into the web pages of any of the two courses that…


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Meaning of control

Meaning of control


Local control of public education has become the rallying cry for many folks on all sides of education debates, from Tea Party libertarians to Bernie Sanders progressives, but local control isn’t an end in itself. It’s a condition in the service of a much higher yet more elusive goal, educational excellence. Here in New Orleans we have been pursuing educational excellence for…


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Open and closed loop Systems Examples

Open and closed loop Systems Examples


Ramp Input (() = 1 / ^2): (4) Parabolic Input (() = 1 / ^3): (5) When we design a controller, we usually also want to compensate for disturbances to a system. Let s say that we have a system with a disturbance that enters in the manner shown below. We can find the steady-state error due to a step disturbance input again employing the Final Value Theorem (treat () = 0). (6)…


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Hierarchical control system

Hierarchical control system


To keep exposition reasonably straightforward, we focus on the two-level control architecture shown in the figure on the right. Low-level control is implemented by an intermediate layer communicating with the plant via low-level (physical) signals L and L and with the high-level supervisor via high-level (abstract) signals H and H. Apart from implementing low-level control…


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Control Systems Theory

Control Systems Theory


This simple example, however can be complex to both users and designers of the motor system. It may seem obvious that the motor should start at a higher voltage, so that it accelerates faster. Then we can reduce the supply back down to 10 volts once it reaches ideal speed. This is clearly a simplistic example, but it illustrates an important point: we can add special Controller…


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What is On/Off control?

What is On/Off control?


Sometimes, the control element has only two position either it is fully closed or fully open. This control element does not operate at any intermediate position, i.e. partly open or partly closed position. The control system made for controlling such elements, is known as on off control theory . In this control system, when process variable changes and crosses certain preset…


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Control loop Theory

Control loop Theory


Chapter: (p.229) 11 Conflict Control Loop Theory of Cognitive ControlSource:The Neuroscience of AttentionPublisher:Oxford University Press DOI:10.1093/acprof:oso/364.003.0011 This chapter explores the conflict control loop theory of cognitive control, a mechanistic framework that helps explain the behavioral and neural mechanisms that are engaged due to conflict from distracters…


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Wireless liquor control Systems

Wireless liquor control Systems


Wi-Pour is the first wireless dispense solution designed to give the operator the most complete and economical answer to the problem of inventory loss from over-pouring, giveaways and shrinkage. The Bev-Met Collar is a wireless tracking solution designed to give an operator a value laden solution to tracking every bottle in inventory. It measures the flow of liquor from a bottle…


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Simple control loop

Simple control loop


By far, the most commonly used control technique is that of the basic feedback control loop. This is so because of its almost universal applicability, which will be discussed in more depth later. Four Basic Elements A negative feedback control system is composed of four basic elements that are connected in series. Briefly, they are: Process Any operation involving a change…


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Integrated control and safety Systems

Integrated control and safety Systems


Critical software-dependent systems are key enablers for safe and robust operations, but are getting more integrated and more complex. The control of complex systems and equipment in the maritime and oil and gas industries has migrated from electromechanical/hydraulic systems to complex software-intensive systems. Nearly everything on-board modern ships, offshore rigs, and…


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