RU2019026C1 - Ripple filter - Google Patents

Abstract

FIELD: radio engineering. SUBSTANCE: ripple filter includes two adders, two integrators, three inverters, three multipliers and integrating adder. EFFECT: improved operational stability when used in control and measurement devices. 1 dwg

Description

 The invention relates to radio engineering, and in particular to special electric filters, and can be used in receiving and measuring devices, as well as in automatic control systems as corrective devices.

 The purpose of the invention is to simplify the adjustment by providing interdependent adjustment of the parameters of the transfer function.

 The drawing shows an electrical block diagram of a smoothing filter.

 The smoothing filter contains a first adder 1, a first integrator 2, a first inverter 3, a first multiplier 4, an integrator 5, a second multiplier 6, a second adder 7, a third multiplier 8, a second inverter 9, a second integrator 10, and a third inverter 11.

 The smoothing filter works as follows.

In the initial state, the input signal X (p) is absent - X ^o (p) = 0 (in the future we will consider signals converted in accordance with the Laplace method). In accordance with the zero initial conditions, there are no signals at the outputs of the first integrator 2, integro-adder 5 and second integrator 10 X ₂ (p) = X ₅ ^o (p) = X ₁₀ ^o (p) = 0. Therefore, the signal at the filter output is to zero.

 Let the input signal X (p) act on the filter input.

X₁(p), на выходе первого интегратора 3 - сигнал Х₃(р) = -Х₁(р), на выходе интегросумматора 5 - сигнал X₅(p) = -

Х₂(р) + +а₁Х₃(р), на выходе второго сумматора 7 - сигнал ^X7^{(p)= _}

а₂Х₁(р) + Х₅(р), на выходе второго инвертора 9 - сигнал Х₉(р) =-Х₇(р), на выходе второго интегратора 10 - сигнал X₁₀(p)= _

X₇(p) Х₇(р), на выходе третьего инвертора 11 - сигнал Y(р) = Х₁₁(р) = = -Х₁₀(р).At the output of the first adder 1, a signal of the form X (p) = - X (p) + X ₁₀ (p) is formed, at the output of the first integrator 2-signal X ₂ (p) = _

X ₁ (p), at the output of the first integrator 3 - the signal X ₃ (p) = -X ₁ (p), at the output of the integrosummer 5 - signal X ₅ (p) = -

X ₂ (p) + + a ₁ X ₃ (p), at the output of the second adder 7 - signal ^X 7 ^{(p) = _}

a ₂ X ₁ (p) + X ₅ (p), at the output of the second inverter 9, the signal X ₉ (p) = -X ₇ (p), at the output of the second integrator 10, the signal X ₁₀ (p) = _

X ₇ (p) X ₇ (p), at the output of the third inverter 11, the signal Y (p) = X ₁₁ (p) = -X ₁₀ (p).

X(p), на выходе второго интегратора 10

_X(p), на выходе фильтра
Y(p)X₁₁(p)=

·X(p).Therefore, at the output of the integro-adder 7, a signal of the form
X ₇ (p) =

X (p), at the output of the second integrator 10

_{X (p)} , at the output of the filter
Y (p) X ₁₁ (p) =

X (p).

=

. При этом на выходе интегросумматора 7 формируется сигнал, соответствующий скорости изменения выходного сигнала сглаживающего фильтра.Therefore, the smoothing filter implements the transfer function
F (p) =

=

. In this case, at the output of the integrosummer 7, a signal is generated corresponding to the rate of change of the output signal of the smoothing filter.

 In this case, by adjusting the first 4, second 6 and third 8 multipliers, a direct mutually independent adjustment of the transfer function parameters is realized.

Claims (1)

 A SMOOTHING FILTER containing an integrator, a first adder, a first and a second integrator, a first inverter, as well as a first, a second and a third multiplier, characterized in that, in order to simplify the tuning by ensuring the mutually independent tuning of the transfer function parameters, a second combiner is introduced, the first and second the inputs of which are connected to the outputs of the second and third multipliers, the second inverter, the input of which is connected to the inputs of the second integrator, third multiplier and the output of the second adder, and you stroke - connected to the third input of the second adder, the fourth input of which is connected to the output of the integrator, the first input of which is connected through a series of the first inverter and the first multiplier connected to the input of the second multiplier, the output of the first adder and the input of the first integrator, the output of which is connected to the second input of the integrator and the third inverter, the output of which is the output of the smoothing filter, and the input is connected to the output of the second integrator and to the first input of the first adder, the second input of which is at the input of the smoothing filter.

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