What is a direct automatic control system application? 1. Improving material properties by heat treatments. 2. Mechanical combination lock. 3. Building Heating/Cooling system. 4. Simple gear train. 5. Bicycle brake system.
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The question asks for an application of a "direct automatic control system". A direct automatic control system implies a system where the control action is directly applied to the process without human intervention, and it typically involves feedback to maintain a Show more…
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Sri K.
1. Draw the closed loop block diagram of an Automatic Electric Iron. Explain the working of the automatic electric iron and briefly describe the working of each component in the system. Suggest the components available in the market to develop the system. 2. Explain the industrial application of cascade control system in boiler drum level control with schematic diagram. And describe the working of each component used in the system. Also specify the industrial standard components used in the same process. 3. Simplify the block diagram shown in the figure below and determine the transfer function. 4. Design a control system using PLC with ladder diagram programming for controlling the level of a single tank. One open tank is installed in the plant of which liquid level is to be controlled. When the level reaches the Low Level, the outlet flow is blocked and the inlet flow is allowed until the high level is achieved. And when the High Level is detected, the outlet flow is allowed and the inlet flow is blocked. Draw the problem diagram and describe the program.
Adi S.
1.1 Draw a component block diagram for each of the following feedback control systems: a. The manual steering system of an automobile b. Drebbel's incubator c. The water level controlled by a float and valve d. Watt's steam engine with fly-ball governor In each case, indicate the location of the elements listed below and give the units associated with each signal: - The process - The desired output signal - The sensor - The actuator - The actuator output signal - The controller - The controller output signal - The reference signal - The error signal Notice that in a number of cases, the same physical device may perform more than one of these functions. 1.2 Identify the physical principles and describe the operation of the thermostat in your home or office. 1.6 Feedback control requires being able to sense the variable being controlled. Because electrical signals can be transmitted, amplified, and processed easily, often we want to have a sensor whose output is a voltage or current proportional to the variable being measured. Describe a sensor that would give an electrical output proportional to the following: a. Temperature b. Pressure c. Liquid level d. Flow of liquid along a pipe (or blood along an artery) e. Linear position f. Rotational position g. Linear velocity h. Rotational speed
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