ADAMS Car - Kingpin Geometry Optimization - Suspension Design

1. Implement control logic of a “washing machine” using Stateflow as per given sequence:  If the power supply is available, the system gets activated  If the Water supply is not available, stop the process & indicate through LED Soaking time should be 200s followed by Washing time of 100s. Then…

1. What is the difference between mapped and dynamic model of engine, motor and generator? How can you change model type? The Mapped models uses a steady-state lookup tables to characterize the performance of the engine, motor and the generator. For example, the mapped engine represents the engine bahevior as a set of…

1. For a defined driving cycle, calculate the energy required for braking. The braking energy formula is as follows :  `B_(en ergy) = 1/2*m*(v_i^2 - v_f^2)` Where, `B_(en ergy)`is the braking energy is Joules (J), `m` is the mass in kg , `v_i`is the initial velocity of the vehicle in m/s and `v_f`is…

Perform kingpin geometry optimization to achieve the following targets oCaster angle : ~4.00 deg oCaster moment arm : ~21.00 mm oKPI angle : ~13.00 deg oSteer axis offset (resultant) : ~85.00 mm oSteer axis longitudinal offset : ~0.00 mm oScrub radius : ~20.00 mm   Compare these numbers with those obtained before…

1. A. Explain a MATLAB demo model named ‘Speed control of a DC motor using BJT H-bridge’. The model demonstrates how the H-bridge is used to generate a chopped voltage and also control the speed of the DC motor. A bipolar Junction Transistor (BJT) is a transistor type which acts as a switch in this case. The…

1.  Which types of power converter circuits are employed in electric and hybrid electric vehicle?    There are different types of power converters employed in both the electric and hybrid electric vehicles. A following diagram indicates the different types of power converters used.  The various…

Use ADVISOR tool and simulate the following    1.   For EV_defaults_in file, if cargo mass is 500 kg with all other default conditions, can the vehicle travel for 45 km with FTP drive cycle? Conclude your observations.   The vehicle EV_defaults_in is simulated using the ADVISOR tool for a cargo…

BAJA ATV Model: The model of an All-terrain Vehicle (ATV) with a Continuous Variable Transmission (CVT) is developed, and the effect of different throttle and brake inputs on the vehicle performance and CVT pulleys speed is observed. The major aim is to  compare the two sets of model - an open loop model wherein…

1. Make a Simulink model of Doorbell using solenoid block with the following details: In the above arrangement, when the switch is closed the electromagnet receives electrical power from the battery and pulls the metal arm to hit the bell producing sound. Create a situation where the switch is closed for…

Simulate the isentropic flow through a quasi 1D subsonic-supersonic nozzle using both the conservation and non-conservation forms of the governing equations.   Problem description : The geometry under consideration is a steady state isentropic flow in a convwrgent-divergent nozzle. The flow at the inlet comes from…

Solving 2D Transient Heat conduction Equation    For an unsteady state the 2-D heat conduction equation is represented as :  `(delT)/(delt) = alpha*((del^2T)/(delx^2) + (del^2T)/(dely^2))` For a steady state condition, the heat conduction equation is represented as :  `((del^2T)/(delx^2) + (del^2T)/(dely^2))…

Derive the following 4th order approximations of the second-order derivative.  1. Central difference 2. Skewed right-sided difference 3. Skewed left-sided difference   To compute the second order derivative, say `(del^2phi)/dx^2` with fourth order approximation, taylor table can be used.   Central differencing…

Perform steering geometry optimization to achieve the following targets Outside turn circle diameter – under 12.0 m Ackermann at 20 deg inner steer angle – ~60% These are subject to the following constraints Max inner tire steer angle – 40 deg (for tire envelope/packaging reasons) Max permissible rack…

Find out the wheel rate of the suspension through simulation Calculate the wheel rate of the suspension using the formulas discussed in class. Why is the number obtained in simulation different ? The target wheel rate is 20 N/mm. Achieve this through two ways: Modifying the spring Modifying the hardpoints (change the spring…

The excel file link is as follows : https://drive.google.com/file/d/1hOziM_YhsHSHBXvX2V9lySka3kb6s30R/view?usp=sharing   Objective of the project :  The aim of the project is to select anti-roll bar diameters to meet the target roll gradient and also to selection appropriate kinematic and compliance parameters…

Problem Set 2a Write an Octave script to show the effect of slip angles (2 through 10 deg in increments of 2) on the Fx vs Fy relationship.Use a slip ratio range of 0 to 1 (or 0 to 100%)Use the combined slip brush tire model we developed in class. Develop your script based on the algorithm. These are your deliverables:1.…

1. Calculate the following parameters for front and rear suspension.(2 points each-total 16 points)   2. Using the information calculated above, come up with a force vs. velocity shock curve for the front and rear suspensions (velocity range = 0 to 500 mm/sec) (7 points each for the front and rear plots for a total…

Excel file link :   https://drive.google.com/file/d/1gApZI-DvcbSHQZIA6vMBqv5uCvO4d9Pr/view?usp=sharing   Goal of the project:   Select springs and anti-roll bars, and set up swing arm geometry to meet targets for ride frequency, roll gradient and pitch gradient, while staying within certain…

Road Surface Roughness :  The road surface roughness profile is also called as the elevation profile. Since the road profile data are random, we cannot use standard mathematical equations to represent the profile. One of the useful method of representation of the road profile is through power spectral density (PSD)…