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

method of solving resection

M/s XYZ Ltd manufactures a product “PLVS” at its plant at Meerut, the maximum capacity of which is 200 units per month. Details of raw materials which go into the making of 1 units


hi there i wonder if you could help me with this quistion? where would i find information specifying the minimum conductor size for electrial circuits can be obtained from A. BS76


Sprinkler system - fire protection engineering Sprinkler systems may be installed in a building to achieve a number of different objectives.  Very often the primary reason for

Can you describe an example of a conceptual model?

"Suppose an investor acquired 1 Round lot of Walden stock at $30/share last year. If the investor received a $1.00 per share dividend during the year and sells the shares at year-e

how can you access the general purpose registers of Microprocessor in windows XP/2000/98...