The armature current of a de machine is controlled with a feedback loop. The following is known about the machine: KPWM = 12 (PWM converter gain) Te 16 ms (electrical time constant) R 2.0 2 (Armature resistance) Assuming a Pl controller that cancels the electrical time constant is used, what is the proportional time constant in terms of the integral time constant (Kp)? KI 16т К, 11 (16m Ky + 1) 16m KI1500
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- You are tasked to enhance the performance of an analog plant using a digital controller PID. The controller is in connected in series with the plant in a closed-loop configuration. The pulse transfer K(z+a) function is given as GzohGp(s) =- Use sampling time Ts=0.6 second, K=8, a=0.78, b=-0.602 (0+z)(q+z) and c=-0.705. Do the following: i. Obtain the design point in z-coordinates to achieve the requirement of having a system settling time of 3 second, and damping ratio of zeta (z=0.705).Q: Discuss the control system (the level controller and the temperature controllers) shown in figure (2). Specify the controlled and manipulated variable in each case. Discuss the type of the controller used in each case, that is, a simple feedback controller, a feedforward controller, a cascade controller, etc. Draw the block diagram of the temperature control loops. Feed Reactor temperature set point (master) TC Water surge tank i Jacket itemperature i set point (slave) TC LC-LT Reactor Cooling water out Product Cooling water makeup Circulation pump Figure (2)Calculating the separation and / or joining angles in the negative feedback control circuit, if any, given as Controlling (K) and Controlled G (s) = (s + 1) / (s2-4 * s + 5) Explanation: The roots of the equation (s2-4 * s + 5); s1 = 2 + 1 * j and s2 = 2-1 * j and the system Transfer Function is TF (s) = K * G (s) / (1 + K * G (s)). a. There are split angles up to (+108.435) and (-108.435) b. There are split angles as much as (+71,565) and (-71,565) c. There are conjunction angles of (+90) and (-90). D. There are separation angles as much as (+18.435) and (-18.435). E. There are no separation and convergence angles.
- 01:53 M 1 or Vo LTED :4G + Assignment 1_KoM.pdf 1/2 Kinematics of Machine Assignment 1 1. Describe various inversions of a single slider crank mechanism giving examples. 2. Describe the inversions of double slider crank mechanism with examples. 3. Define mechanical advantage and transmission angle of a mechanism. 4. For the kinematic linkage shown in fig. 1, find the number of binary link, ternary link, quaternary link and degree of freedom. C (1) DE, F Fig. 1(a) Fig. 1(b) 5. What do you mean by degree of freedom of a kinematic pair? How are pair classified? Give suitable examples. 6. In a slider crank mechanism, the length of crank and connecting rod are 100 mm and 400 mm respectively. Locate all the l-centres of the mechanism for the position of the crank when it has turned 45° from the inner dead centre. Find the velocity of slider and point B. 400 mm 45° m mim Fig.2 7. State and prove Kennedy's theorem as applicable to instantaneous centre of rotation. Explain angular velocity…The ratio of output to input of a system is known as Transfer function. Select one: O True O False Coloct the cinmple cuctom fcom the fellouuing. the (b) A block diagram for arc welding process control in depicted as in Figure controller regulates the arc current, which results changes in the wire-melting process if error occurred. Determine the transfer function of this closed loop system. Controller Wire-melting process Are Desired Error K $ + 2 current Puddle diameter (0.5s + 1)(s + 1) diameter Measured Vision system diameter 0.005s + 1 Figure
- QUESTION 3 An open loop transfer function with a unitary feedback control system is given K by G(s) =- where K is the gain of the system. An open loop (s+1)(s+4) transfer function with a PID controller must be designed in order to yield a peak time of 1.047 s, and a damping ratio of 0.8. 3.1. Calculate the design point s, of the system 3.2. Calculate the gain and the zero(s) of the PID controller 3.3. Provide the block diagram of the compensated system with the PID controllerConventional float actuated device is used as a level measurement sensor, which consist of pulley and a pointer which move over a graduated scale. Let say you are asked to develop a controller-based float actuated system having a sensor for level measurement or may be more than one sensor is required for accurate level measurement, which sensor will you use and why? Draw the whole schematic showing the position of the sensor or sensors. Will pulley be part of your new digital system, if yes justify your answer, if no, then how you will develop a system without using pulley.estion 1 The step resolution of a stepper motor is set for 1024 steps per revolution, Find the frequency to rotate at 60 rpm. (Give your answer in Hertz, put only numeric value) Question 3 A proportional valve is handled by an PWM signal Question 4 The speed of a stepper motor is controlled by Question 5 The relay is driven by an analog signal Question 6 Determine the output voltage from a PWM pin when the time ON is 25 ms and the frequency is 1kHz and Vcc-SV. (Put only a number in Volt, no need to add the unit word)
- (PID solution with the requirements and simple explanation. Thx) INSTRUCTION: Given three bare processes develop a control system using feedbackand feedforward concept/principle. Your output is a process and instrumentationdiagram (P & ID) using ISA's Instrument Identification and Symbols standards withexplanation. PROCESS 2: The liquid level inside the tank is regulated at a value of 3.0 m on a condition ofcontinuous liquid inflow and outflow. Requirements: Two feedback solutions One feedforward solutionQ2. The application glven as In figure A &B can be realized by using an ultra-sonic sensor. Also explain how triangulation method can be used for the same. Using sultable diagrams, explain the process of operation elaborately. Hll semor Oututpu tan s be courted tita) Figure A Soo: SENSOR OUT Figure BName two effects of negative feedback.