calculate the input signal u and maximum speed, Other Engineering

The purpose of a cruise control is to keep the velocity of a car constant. The driver drives the car at the desired speed, the cruise control system is activated by pushing a button and the system then keeps the speed constant. The major disturbance comes from changes of the slope of the road which generates forces on the car due to gravity. The cruise control system measures the difference between the desired and the actual velocity and generates a feedback signal which attempts to keep the error small in spite of changes in the slope of the road. The feedback signal is sent to an actuator which influences the throttle and thus the force generated by the engine.

It is assumed that the force developed by the engine is proportional to the control signal sent to the throttle. Introducing parameters for a particular car in fourth gear, the model is described by the following equation;
Dv/dt +0.02v = u-10θ
where
θ = road slope steepness in %.
u = 1 at full throttle (maximuminput value)
u = control signal sent to the throttle and has a value 0 v = car velocity

a) Derive the transfer function and draw a block diagram of the arrangement.

b) What is the maximum speed at full throttle on a horizontal road (Θ=0) and how long will it take to reach the maximumspeed?

c) Calculate the input signal u required in order to maintain a car speed of 100 kph with the road slope steepness is 4%.

d) If the car is cruising at 100 kph on a horizontal road, briefly explain what will happen if the slope steepness suddenly changes to 10%.

Posted Date: 4/1/2013 4:07:56 AM | Location : United States







Related Discussions:- calculate the input signal u and maximum speed, Assignment Help, Ask Question on calculate the input signal u and maximum speed, Get Answer, Expert's Help, calculate the input signal u and maximum speed Discussions

Write discussion on calculate the input signal u and maximum speed
Your posts are moderated
Related Questions
VK Ltd a multi product company, furnishes you the following data relating to the year 2000. First half sales Second half sales Sales Rs.45000 Rs.50000 Total cost Rs.40000 Rs

Comparator A comparator is a device, which compares two input voltages and indicates at the output, which of the two is the larger.  Basically, the circuits use a differential

Q. Explain the following with reference to deformation of metals:                         (1) Preferred orientation                         (2) Elastic after effect

Light-emitting diode: One of the most common light sources used in electronics is the "Light Emitting Diode" (LED).  A LED is a two terminal semiconductor device comprising a p


Propeller governing mode: The speed lever is placed in the high position. The engine is operating at 97 percent. As the power lever is advanced ahead of the flight idle deten

According to this it is impossible to specify precisely and simultaneously two physical quantities those are canonically conjugate to each other and the product of the uncertainty

Operations invending in chain survey

How do the numbers calculated in f. and g. compare to the values in California and in the USA? The source of CO 2 emissions in Florida differ a lot from California. Transportat

i have a coursework for finite element analysis of marine structure and i need help to solve it