Listopad 2017

How you feel when analyzing

23. listopadu 2017 v 2:16
Another question is how you feel when analyzing, because if it intimidates you then you are definitely more suited to a mechanical approach.Some traders will go through system after system, teacher after teacher, wasting thousands of dollars not only in useless systems but in lost trades before they realize they've been approaching the markets from the wrong standpoint because they've been trying to trade the wrong type of system.
The discretionary trader on the other hand likes to make decisions; it is part of their psychological make-up. Therefore, there are two types of trading systems, a mechanical system and a Hydraulic Workholding discretionary system. The mechanical trader (if disciplined enough), will make a mechanical trading system work (as long as their resources allow the system to operate efficiently) because there are no decisions to make, and by their very nature they like to avoid decisions.
Let's say you had a lazy million dollars spare and thought that buying a McDonald's restaurant sounded like a good idea. These aren't the sorts of rules a trader might place on their wall and call the golden rules because they are personal, such as never trade when tired, always eat before trading etc.
A discretionary system on the other hand involves a decision making process that can range from a check list to economic and fundamental viewpoints. I'm going to use an example of the business franchise model employed by McDonald's to give you an idea of the difference between the two. The most important question you need to ask your self is, once I purchase the restaurant, am I going to be able to allow it to run according to McDonalds strict rules, or am I the sort of person who will want to make changes; am I going to want to do things my way?
In a franchise model, you can't be the sort of person who is entrepreneurial because an entrepreneur by their very nature likes to create, invent, trial things and learn their own way, and the franchiser does not want you changing the system. The perfect franchisee on the other hand has no entrepreneurial skills but makes up for it by being a hard worker willing to follow rules. They enjoy the challenge and the process involved very much like an entrepreneur does and so needs a trading system that challenges them to make decisions.
The two types of traders are the mechanical type trader and the discretionary type trader.
The psychological difference between the two types is the trader themselves, an area that the trader should uncover first before ever attempting to trade. Mechanical trading system rules are the sorts of rules that would allow you to employ someone to trade your system on your behalf; because they are clear cut and involve absolutely no decision making. The point is that the trader or investor has a bias or view based on any evidence presented to them and depending on the level at which the trader feels comfortable will gather as much evidence as possible to support this view.
And there lies a key difference between a mechanical type trader and a discretionary one.
If you are having difficulty in deciding which type you are, some simple questions you can ask yourself is how you feel when you have to make decisions, especially multiple choice questions? If you don't like it you are probably more likely the mechanical type.
Looking at the analysis side of things first, a mechanical system is a complete set of rules that are set in stone and should never be broken.
. The difference between the two is quite large not only in the way the market and possible trades are analyzed but in the psychological make-up of the trader themselves

Theoretical piston style in step backwards

15. listopadu 2017 v 2:34

Theoretical piston style in step backwards:

F = A 'x p = 18.

a. To avoid bending, then a large diameter piston rod length selected for a big step.Factors that determine the cylinder size is determined by the magnitude of the force received by the cylinder and the length of steps to be performed by the cylinder to move the load. p - Rr: to resign

Description: Rf = force versus spring

Rr = friction

A = sectional area of the cylinder without piston rod

A '= area of cross section of cylinder with piston rod

EXAMPLE 2. p - (Rf + Rr)

For the double-cylinder drive, then apply:

F = A. The average piston speed standard cylinder approximately 0.785 x D x h x n

For double drive cylinder:

Q = (0. Effective piston style means a lot in planning the cylinder.

d. In calculating the effective piston force, frictional resistance must be taken into account.

For single-cylinder drive, then apply:

F = A.1 to 1.50 N

Style Rr taken (on average 10%) = 117.5 x 10 x 6 x 10 N / m - 111N = 999N. This is related to stride length and diameter of the piston rod. In normal operating conditions the limit pressure 400-800 kPa or 4-8 bar.785 x D x h + 0. Piston speed can be adjusted by using the valve.5 m / sec. Buckling load

Given load on the piston rod should not exceed the maximum allowable price.


Sectional area of the cylinder without piston rod:

A = ¼ phi x D '= 0. Also influenced by the position of end pads.785 = (25-1.625 cm

Sectional area of cylinder with piston rod

A n = (D - d) x 0. When there is movement from the end position of pads, aids the flow through the valve block (thortte relief valve), so that the piston speed can be derived.75 N

So that the effective piston force on a step forward:

F = A xp - Rr = 19.

Determine the sectional area of cylinder piston rod with and without (A and A ') and how much force F that can be generated (steps forward and steps backward). With a large diameter cylinder and the long stroke, large air consumption makes pneumatic equipment to be wasteful.1:

If the cylinder has a diameter (D) 50 mm diameter piston dsan (d) 12 mm, having a frictional force (Rr), an average of 10% and 600 kPa applied pressure.


where: F = effective piston force (Newton)

p = working pressure (bar / Pa / psi)

d = piston diameter (cm)

R = friction (Newton) was taken 30-20% of the calculated force

Friction is determined by the lubrication, back pressure, the shape of the seal and so forth. Piston speed

Piston speed depending on the prevailing air pressure, pipe length, Tools Equipment cross-sectional area at the end of the control and also working part of the average flow through the end of the control section. p - Rr: to advance

F = A '.50 x 10 m x 6 10 N / m = 1110 N

Friction is taken Rr (average 10%) = 111N

Effective piston style in step backwards:

F = A 'xp - Rr = 18.

With a big step, mechanical stress on the piston rod and the bearing guide is too big.

c. With a special cylinder (cylinder impact), the speed can reach 10 m / sec. Air Consumption

To obtain information on the number of indoor air usage is as follows:

For a single drive cylinder:

Q = 0. The amount of the allowable buckling force (FK) is as follows:



Fk =is permitted buckling force (N)

E = modulus of elasticity (N/mm2)

J = moment of inertia (cm)

L = length of effective measures (cm) = 2x stride length

S = safety factor (taken 5)

b.626 x 10 x 6 x 10 N / m = 1177.785 (D - d) x h) n x pk


Q = volume of air every centimeter step (liters)

D = piston diameter (mm)

h = length of step (mm)

n = number of steps per minute

pk = compression ratio (liters / min)

For specific operating pressure, certain piston diameter and a specific step number takanan air consumption can be calculated by comparing the compression

.44) = 18.785 x 5 = 19. Then if the length is enlarged so that the distance between the bearing increases and enlarged piston rods.50 cm

Theoretical piston style in a step forward:

F = A xp = 19.625 x 10 x 6 x 10 N / m - 117. Stride length

Pneumatic cylinder stride length should not exceed 2000 mm