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Describe one conventional feedback control loop and one cascade control loop for this process, stating, in general terms, the advantages and disadvantages of cascade control compared to conventional

Posted on December 9, 2020 by Geoffrey

(𝜏𝑠+1)𝑥𝐵′(𝑠)𝑥𝐹𝐵𝑠𝐹′(𝑠)−𝑥𝐵𝑠𝐹𝐵𝑠𝐹𝐵′(𝑠)where 𝜏𝑉𝐵𝑠has been defined as a parameter.The feedforward controller will be adjusting the product flow rate 𝐹𝐵′to maintain the product concentration at the setpoint value 𝑥𝐵𝑠𝑝′, hence the above becomes:(𝜏𝑠+1)𝑥𝐵𝑠𝑝′(𝑠)𝑥𝐹𝐵𝑠𝐹′(𝑠)−𝑥𝐵𝑠𝐹𝐵𝑠𝐹𝐵′(𝑠)𝑥𝐵𝑠𝐹𝐵𝑠𝐹𝐵′(𝑠)𝑥𝐹𝐵𝑠𝐹′(𝑠)−(𝜏𝑠+1)𝑥𝐵𝑠𝑝′(𝑠)𝐹𝐵′(𝑠)𝑥𝑥𝐵𝑠[𝐹′(𝑠)−𝐹𝐵𝑠𝑥(𝜏𝑠+1)𝑥𝐵𝑠𝑝′(𝑠)]Therefore, the feedforward controller adjusts the product flow rate 𝐹𝐵′(𝑡)as a function of the measured feed flow rate 𝐹(𝑡)(disturbance). The main disadvantage of this control scheme […]

Calculate the number of degrees of freedom for the system and the maximum number ofcontrolled and manipulated variables

Posted on December 9, 2020 by Geoffrey

EX40HC – Tutorial 9 Degrees of freedom and generation of control loopsProblem 1. Consider the CSTR below, where an exothermic reaction 𝐴𝐴→𝐵𝐵 takes place. The feed containsspecies A at concentration𝐶𝐶𝐴𝐴𝐴𝐴(𝑡𝑡). The aim of the control system is to maintain the conversion ofspecies A 𝐶𝐶𝐴𝐴𝐴𝐴(𝑡𝑡)and the reaction temperature 𝑇𝑇(𝑡𝑡) at the desired setpoints. The disturbances are […]

Calculate the number of degrees of freedom for the system and the maximum number

Posted on December 8, 2020 by Geoffrey

EX40HC – Tutorial 9 Degrees of freedom and generation of control loopsProblem 1. Consider the CSTR below, where an exothermic reaction 𝐴𝐴→𝐵𝐵 takes place. The feed containsspecies A at concentration𝐶𝐶𝐴𝐴𝐴𝐴(𝑡𝑡). The aim of the control system is to maintain the conversion ofspecies A 𝐶𝐶𝐴𝐴𝐴𝐴(𝑡𝑡)and the reaction temperature 𝑇𝑇(𝑡𝑡) at the desired setpoints. The disturbances are […]

where p0 is the ideal/nominal pressure and dT/dp is the pressure coefficient defined by ITS-90

Posted on December 8, 2020 by Geoffrey

where p0 is the ideal/nominal pressure and dT/dp is the pressure coefficient defined by ITS-90 (values are given in Appendix B). For melting and freezing points in open cells without any pressure control or measurement, the pressure is determined by the weather and altitude at the location of the measurement. This leads to pressure variations […]

Discussion on the melting phenomenon, the effect of impurities, and a short derivation of Van’t Hoff’s relation

Posted on December 8, 2020 by Geoffrey

.3 Impurity effects Impurity effects are usually the most significant source of uncertainty in fixed-point realisations. Recent improvements in the accuracy and limits of detection in the chemical analysis of impurities in fixed-point substances have made it feasible to model and correct for some impurities. This has had a considerable impact on both the realization […]

Explain how you could apply the concepts of ethics and sustainability to Safety Engineering Management.

Posted on December 8, 2020 by Geoffrey

1. Task 1: Risk Assessment on a metal turning lathe machines <2. Producing a detailed written technical research report of 1000 words on the FMEA risk assessment methodology as applied to metal turning lathe operations associated with a Gantt chart for the project schedule. Explain how you could apply the concepts of ethics and sustainability […]

Simulate and plot the liquid level in the tank ℎ′(𝑡)versus time for the uncontrolled process

Posted on December 8, 2020 by Geoffrey

Problem 2.Consider the stirred tank vessel from Problem 1 of Tutorial 5.Up to time 0 the process is at steady state. At time 0 there is a step change in the influent flow rate, i.e. 𝐹𝑖(𝑡)increases by 0.001 m3/s.Using Simulink for the simulations, carry out the following:a)Build in Simulinkthe closed loop block-diagram for the controlled […]

Using a generic PI transfer function and the transfer functions for the process, the control valve and the measuring device as determined in Tutorial 5.

Posted on December 8, 2020 by Geoffrey

Problem 2.Consider the stirred tank vessel from Problem 1 of Tutorial 5.Up to time 0 the process is at steady state. At time 0 there is a step change in the influent flow rate, i.e. 𝐹𝑖(𝑡)increases by 0.001 m3/s.Using Simulink for the simulations, carry out the following:a)Build in Simulinkthe closed loop block-diagram for the controlled […]

Explain how the microstructures of processed metallic materials affects the mechanical properties of the materials

Posted on December 7, 2020 by Geoffrey

An annotated phase diagram for each specimen•Information about the effect that impurities and grain boundaries have on the mechanical properties of materials Checklist of evidence requiredA written report containing annotated images, extracts from an accredited materials data source, materials identificatioevidence, phase diagrams and a learner observation record.For a distinction standard, overall, the evidence, such as […]

What maintenance events need to be completed and when?

Posted on December 2, 2020 by Geoffrey

Provides a range of tools to assist on the planning and execution of equipment support. Functionalities include: maintenance, repair, modification, inventory management with a deployable capability. c. Provides information architecture to support wider exploitation of equipment data with an extensive library of reports with a data mining tool. Full parts catalogue availability. (1) What is […]