What is forward sensing in AGVS terminology?

What is the unit load principle?

Suppose the warehouse in the preceding problem were organized according to a class-based dedicated storage strategy based on activity level of the pallet loads in storage, so that aisles 1 and 2...

An industrial robot performs a machine loading and unloading operation. A PLC is used as the robot cell controller. The cell operates as follows: (1) a human worker places a work part into a nest,...

A flexible manufacturing system is being planned. It has a ladder layout as pictured in Figure P10.1 and uses a rail guided vehicle system to move parts between stations in the layout. All work parts...

An automated guided vehicle system is being proposed to deliver parts between 40 workstations in a factory. Loads must be moved from each station about once every hour; thus, the delivery rate = 40...

A closed loop overhead conveyor must be designed to deliver parts from one load station to one unload station. The specified flow rate of parts that must be delivered between the two stations is 300...

A planned fleet of forklift trucks has an average travel distance per delivery = 500 ft loaded and an average empty travel distance = 350 ft. The fleet must make a total of 60 deliveries per hour....

An AGVS will be implemented to deliver loads between four workstations: A, B, C, and D. The hourly flow rates (loads/hr) and distances (m) within the system are given in the table below (travel...

Name and briefly describe four of the six measures used to assess the performance of a storage system?

What are the five factors that can be used to distinguish manufacturing systems in the classification scheme proposed in the chapter?

What are the additional three enablers that are required for unattended operation of a mixed-model automated production cell?

A 20station transfer line presently operates with a line efficiency E = 1/3. The ideal cycle time = 1.0 min. The repair distribution is geometric with an average downtime per occurrence = 8 min, and...

A robotic assembly cell uses an industrial robot to perform a series of assembly operations. The base part and parts 2 and 3 are delivered by vibratory bowl feeders that use selectors to insure that...

Reconsider Problem 17.17 except that both the current line and the proposed line will have storage buffers before and after the manual stations. The storage buffers will be of sufficient capacity to...

A synchronous assembly machine has 8 stations and must produce at an average rate of 400 completed assemblies per hour. Average downtime per jam is 2.5 min. When a breakdown occurs, all subsystems...

A flexible manufacturing system is used to produce three products. The FMS consists of a load/unload station, two automated processing stations, an inspection station, and an automated conveyor...

What are the two aspects of quality in a manufactured product? List some of the product characteristics in each category.

What is the measure step in DMAIC?

What is a robust design in Taguchi's quality engineering?

What is meant by the term process capability?

In Problem 19.18, determine (a) The utilizations of each station in the system for the specified production requirements, and (b) What is the maximum possible production rate of the system if the...

A FMS consists of three stations plus a load/unload station. Station 1 loads and unloads parts using two servers (material handling workers). Station 2 performs horizontal milling operations with two...

For each of the three control charts, identify whether or not there is evidence that the process depicted is out of control.

The inspection department in an automobile final assembly plant checks cars coming off the line against 85 features that are considered critical-to-quality characteristics for customer satisfaction....

What are the six phases of the general design process?

What is enterprise resource planning (ERP)?

What is the difference between independent demand and dependent demand?

Material requirements are to be planned for component C2 given the master schedule for P1 and P2, and the product structures in. Assembly lead time for products and subassemblies (P and S levels) is...

Demand for a certain product is 25,000 units/yr. Unit cost is $10.00. Holding cost rate is 30%/yr. Changeover (setup) time between products is 10.0 hr, and downtime cost during changeover is $150/hr....

A batch of large castings is processed through a machine shop. The batch size is 20. Each raw casting costs $175. There are 22 machining operations performed on each casting at an average operation...

A part is produced in batches size of 3000 pieces. Annual demand is 60,000 pieces, and piece cost is $5.00. Setup time to run a batch is 3.0 hr, cost of downtime on the affected equipment is figured...

A variety of assembled products are made in batches on a batch model assembly line. Every time a different product is produced, the line must be changed over which causes lost production time. The...

Annual demand for a part is 500 units. The part is currently produced in batches. It takes 2.0 hours to set up the production machine for this part, and the downtime during setup costs $125/hr....

Apply Porter's value chain model to Costco (www.costco.com). What is Costco's competitive strategy? Who are Costco's major competitors? Describe Costco's business model. Describe the tasks that...

Compare and contrast Google Sites (www.google.com/sites) and Microsoft Office Live (www.liveoffice.com). Which site would you use to create your own Web site? Explain your choice.

Identify some benefits and limitations of e-commerce.

Discuss the benefits of telemetry in health care for the elderly.

How would you describe Web 2.0 to someone who has not taken a course in information systems?

Discuss each of the seven development methods in this section with regard to the four business decisions that organizations must make?

What is the difference between systems analysis and systems design?

Describe the alternate methods that can be used for systems development, other than the SDLC?

A large, braced robot arm for welding large structures is shown in Figure DP1.4. Sketch the block diagram of a closed-loop feedback control system for accurately controlling the location of the weld...

The rotational velocity Ï of the satellite shown in Figure E2.22 is adjusted by changing the length of the beam L. The transfer function between Ï(s) and the incremental change in beam...

A voltage follower (buffer amplifier) is shown in Figure P2.19. Show that T = v0/vin = 1. Assume an ideal op-amp. FIGURE P2.19 A butter amplifier

The measurement or sensor element in a feedback system is important to the accuracy of the system [6]. The dynamic response of the sensor is important. Most sensor elements possess a transfer...

A system is represented by Figure P2.36. (a) Determine the partial fraction expansion and y(t) for a ramp input, r(t) = t, t > 0. (b) Obtain a plot of y(t) for part (a), and find y(t) for t = 1.0 s....

A two-mass system is shown in Figure P2.37 with an input force u(t). When m1 = m2 = 1 and K1 = K2 = 1, find the set of differential equations describing the system. .t ely K, FIGURE P2.37 Two-mass...

The circuit shown in Figure P2.48 is called a lead-lag filter. (a) Find the transfer function V2(s)/V1(s). Assume an ideal op-amp. (b) Determine V2(s)/V1(s) when R1 = 100 kΩ, R2 = 200...

Determine the transfer function X1(s)/F(s) for the coupled spring-mass system of Problem P2.3. Sketch the s-plane pole-zero diagram for low damping when M = l, b/k = l, and b01

Consider the cable reel control system given in Figure AP2.8. Find the value of A and K such that the percent overshoot is P.O. ¤ 10% and a desired velocity of 50 m/s in the steady state is...

Consider the clock shown in Figure DP2.5. The pendulum rod of length L supports a pendulum disk. Assume that the pendulum rod is a mass less rigid thin rod and the pendulum disc has mass m. Design...

Determine a state variable representation for the system described by the transfer function Y(s)4(s + 3) (s) = R(s)-(s + 2)(s + 6)

A system has the following differential equation: Determine Φ(t) and its transform Φ(s) for the system. 0 0 2

A system has a block diagram as shown in Figure P3.26. Determine a state variable model and the state transition matrix Φ(s). R(s) Msi 25 FIGURE P3.26 Feedback system

Consider the electromagnetic suspension system shown in Figure AP3.1. An electromagnet is located at the upper part of the experimental system. Using the electromagnetic force f, we want to suspend...

Consider the mass m mounted on a mass less cart, as shown in Figure AP3.2. Determine the transfer function Y(s)/U(s), and use the transfer function to obtain a state-space representation of the...

Front suspensions have become standard equipment on mountain bikes. Replacing the rigid fork that attaches the bicycle's front tire to its frame, such suspensions absorb bump impact energy, shielding...

Consider the single-input, single-output system described by x(t) = Ax(t) + Bu(t) y(t) = Cx(t) where Assume that the input is a linear combination of the states, that is, u(t) = -Kx(t) + r(t), where...

A system has the state variable matrix equation in phase variable form It is desired that the canonical diagonal form of the differential equation be Determine the parameters a, b, and d to yield the...

A closed-loop system is used to track the sun to obtain maximum power from a photovoltaic array. The tracking system may be represented by Figure 4.3 with H(s) = 1 and G(s) = 100/s + 1 where = 3...

A feedback system has the closed-loop transfer function given by (a) Compute the sensitivity of the closed-loop transfer function to changes in the parameter p, where p > 0. (b) Compute the...

Two feedback systems are shown in Figures P4.12(a) and (b). (a) Evaluate the closed-loop transfer functions T1 and T2 for each system. (b) Compare the sensitivities of the two systems with respect to...

Consider the two systems and (a) Using the tf function, determine the transfer function Y(s)/U(s) for system (1). (b) Repeat part (a) for system (2). (c) Compare the results in parts (a) and (b) and...

Consider the closed-loop system in Figure E4.11, where G(s) = K / s + 10 and H(s) = 14 / s2 + 5s + 6 (a) Compute the transfer function T(s) = Y(s)/R(s). (b) Define the tracking error to be E(s) =...

In Figure E4.12, consider the closed-loop system with measurement noise N(s), where In the following analysis, the tracking error is defined to be E(s) = R(s) - Y(s): (a) Compute the transfer...

A proposed hypersonic plane would climb to 100,000 feet, fly 3800 miles per hour, and cross the Pacific in 2 hours. Control of the aircraft speed could be represented by the model in Figure P4.14....

A control system has two forward paths, as shown in Figure P4.4. (a) Determine the overall transfer function T(s) = Y(s)/R(s). (b) Calculate the sensitivity, STG, using Equation (4.16). (c) Does the...

Consider the unity feedback system shown in Figure E4.14. The system has two parameters, the controller gain K and the constant K1 in the process. (a) Calculate the sensitivity of the closed-loop...

Reconsider the unity feedback system discussed in E4.14. This time select K = 120 and K1 = 10. The closed-loop system is depicted in Figure E4.15. (a) Calculate the steady-state error of the...

A feedback system is shown in Figure E5.14. (a) Determine the steady-state error for a unit step when K = 0.4 and Gp(s) = 1. (b) Select an appropriate value for Gp(s) so that the steady-state error...

A system is shown in Figure E5.18(a). The response to a unit step, when K = 1, is shown in Figure E5.18(b). Determine the value of K so that the steady-state error is equal to zero. GIS) fs) ir 1.0 0...

A system is shown in Figure P5.20. (a) Determine the steady-state error for a unit step input in terms of K and K1, where E(s) = R(s) - Y(s). (b) Select K1 so that the steady-state error is zero. (s...

Extreme temperature changes result in many failures of electronic circuits [1]. Temperature control feedback systems reduce the change of temperature by using a heater to overcome outdoor low...

A unity negative feedback system has the loop transfer function Using Isim, obtain the response of the closed-loop system to a unit ramp input, R(s) = 1/s2. Consider the time interval 0 ¤ t...

Consider the non-unity feedback system is depicted in Figure CP4.11. (a) Determine the closed-loop transfer function T(s) = Y(s)/R(s). (b) For K = 10, 12, and 15, plot the unit step responses....

The loop transfer function of a unity negative feedback system is L(s) = Gc(s)G(s) = 25/s(s + 5). Develop an m-file to plot the unit step response and determine the values of peak overshoot Mp, time...

A system has a characteristic equation q(s) = s4 + 9s3 + 45s2 + 87s + 50 = 0. (a) Determine whether the system is stable, using the Routh-Hurwitz criterion. (b) Determine the roots of the...

Consider the system represented in state variable form x = Ax + Bu y = Cx + Du, where (a) What is the system transfer function? (b) For what values of k is the system stable? A0 0 B0 L-k C-[1 -k-k 0...

We are all familiar with the Ferris wheel featured at state fairs and carnivals. George Ferris was born in Galesburg, Illinois, in 1859; he later moved to Nevada and then graduated from Rensselaer...

A unity feedback system has a loop transfer function L(s) = K / (s + l)(s + 3)(s + 6), where K = 20. Find the roots of the closed-loop system's characteristic equation.

Utilizing the Routh-Hurwitz criterion, determine the stability of the following polynomials: (a) s2 + 5s + 2 (b) s3 + 4s2 + 8s + 4 (c) s3 + 2s2 - 6s + 20 (d) s4 + s3 + 2s2 + 12s + 10 (e) s4 + s3 +...

A feedback control system has a characteristic equation s3 + (1 + K)s2 + 10s + (5 + 15K) = 0. The parameter K must be positive. What is the maximum value K can assume before the system becomes...

Determine the relative stability of the systems with the following characteristic equations (1) by shifting the axis in the s-plane and using the Routh-Hurwitz criterion, and (2) by determining the...

A unity negative feedback system has the loop transfer function Gc(s)G(s) = s + 1 / s3 + 4s2 + 6s + 10. Develop an m-file to determine the closed-loop transfer function and show that the roots of the...

A robot force control system with unity feedback has a loop transfer function [6] (a) Find the gain K that results in dominant roots with a damping ratio of 0.707. Sketch the root locus. (b) Find the...

The design of the control for a welding arm with a long reach requires the careful selection of the parameters [13]. The system is shown in Figure DP5.2, where ζ = 0.6, and the gain K and...

Designers have developed small, fast, vertical-takeoff fighter aircraft that are invisible to radar (stealth aircraft). This aircraft concept uses quickly turning jet nozzles to steer the airplane...

A very interesting and useful velocity control system has been designed for a wheelchair control system. We want to enable people paralyzed from the neck down to drive themselves in motorized...

A control system is shown in Figure AP6.3. We want the system to be stable and the steady-state error for a unit step input to be less than or equal to 0.05 (5%). (a) Determine the range of...

A control system for an automobile suspension tester has negative unity feedback and a process [12] L(s) = Gc(s)G(s) = K(s2 + 4s + 8) / s2(s + 4) We desire the dominant roots to have a equal to 0.5....

A spacecraft with a camera is shown in Figure AP6.6(a).The camera slews about 16° in a canted plane relative to the base. Reaction jets stabilize the base against the reaction torques from the...

The loop transfer function of a single-loop negative feedback system is This system is called conditionally stable because it is stable only for a range of the gain K such that k1 K(s 2.5s 3.2)

Let us consider a device that consists of a ball rolling on the inside rim of a hoop [11]. This model is similar to the problem of liquid fuel sloshing in a rocket. The hoop is free to rotate about...

Sketch the root locus for the following loop transfer functions of the system shown in Figure P7.1 when 0 (a) (b) (c) (d) Figure P7.1 K(s 5) G(s)Gs) + I( 10) K(s 4s 8) s(s 1) Controller Process

A computer system requires a high-performance magnetic tape transport system [17]. The environmental conditions imposed on the system result in a severe test of control engineering design. A...

A mobile robot suitable for nighttime guard duty is available. This guard never sleeps and can tirelessly patrol large warehouses and outdoor yards. The steering control system for the mobile robot...

The fuel control for an automobile uses a diesel pump that is subject to parameter variations. A unity negative feedback has a loop transfer function (a) Sketch the root locus as K varies from 0 to...

A micro robot with a high-performance manipulator has been designed for testing very small particles, such as simple living cells [6]. The single-loop unity negative feedback system has a loop...

Identify the parameters K, a, and b of the system shown in Figure P7.37. The system is subject to a unit step input, and the output response has an overshoot but ultimately attains the final value of...