Automotive power-assisted steering system, Electrical Engineering

In terms of negative feedback, there exists an analogy between the operational amplifier and the power-steering mechanism of an automobile. The hydraulic pump is analogous to the power supply in an op-amp circuit. The position of the booster-cylinder piston that is linked to the steering is analogous to the op-amp output signal; the mechanical linkage between the control valve and the booster-cylinder piston is analogous to the feedback circuit; the control-valve response to the difference between the input from the steering wheel and the position of the steering linkage is analogous to the op-amp response to its differential input signal. Thus the automotive power- assisted steering system is but an example of negative feedback in a mechanical sense.

Figure 5.6.1 illustrates in a simplified manner how a hydraulic pump driven by the engine continuously supplies pressure to a control valve which in turn supplies the fluid to the two sides of the booster cylinder. A negative feedback path is established from the booster cylinder through the mechanical linkage back to the control valve.

For straight steering, the pressure applied is equal on both sides of the cylinder and, as such, no turning force results.When the steering wheel is moved by the driver to turn the wheels in the desired direction, more pressure is applied to one side of the cylinder or the other. A mechanical feedback arm from the steering linkage causes the valve to return to its neutral position as the wheels turn, thereby allowing the driver to make a gradual turn. As and when the steering wheel is turned, the wheels move a proportional amount rather than moving all the way to the extreme position.

117_Automotive Power-Assisted Steering System.png

Posted Date: 6/21/2013 6:58:31 AM | Location : United States







Related Discussions:- Automotive power-assisted steering system, Assignment Help, Ask Question on Automotive power-assisted steering system, Get Answer, Expert's Help, Automotive power-assisted steering system Discussions

Write discussion on Automotive power-assisted steering system
Your posts are moderated
Related Questions
How to build a 6 bit comparator?

Q. Design the low-pass filter shown in Figure (by determining L) to have a half-power frequency of 10 kHz.

What are the Disadvantages of using robots -  They can find it difficult to deal with 'unusual' circumstances for example a door is missing from a car waiting on the paint spra

A 3 phase 60 hertz induction motor has 8 poles and operates with a slip of .05 for a certain load. Compute in r.p.m. the (a) Speed of the rotor with respect to the stator, (b

Energy Bands 1) Since isolated atoms are brought together to make a solid, the electron wave functions begin to overlap. 2) Several interactions occur, and, at the proper i

What are the industrial applications of the project bcd to excess 3 code converter?

Define Sampling at a Very High Frequency? By sampling at a very high frequency compared with the signal frequency, we can ensure that we do not miss important information. Anot

An 12µF capacitor is connected in series to a 0.5M? resistor across the dc voltage supply of 240V. verify: (a)  Time constant (b)  Initial charging current (c)  Time fo

1. In the circuit shown below, the capacitor initially has a voltage across it 4 Volts (at t = 0). a. Write down the expression for V C (t) when the switch is closed. b. Wr

Capacitor-input filter: The capacitor-input filter, as well called pi filter because of its shape which looks like the Greek letter pi, is a sort of electronic filter. Filter