Control system for a failure mode testing system
AssigneeEntela, Inc.
InventorsAlexander J. Porter, Mark Allen Smith
Life of this patent
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Abstract
A control system for a failure mode testing system is described. The control system employs at least one control algorithm that enables the testing system to be operated at optimal pressure and frequency levels in order to generate a desired system response, such as a desired energy level and desired slope of the fast Fourier transform of the system response. Also described are a pressure dither system and a frequency ringing system for enhancing the operation of the actuator cylinders of the failure mode testing system. All three of the systems can be incorporated, either singularly or in combination, into a computer software program that can be employed to operate and control the failure mode testing system.
Claims66
A control system for a failure mode testing system having a determinable system response, wherein the testing system comprises:
- a plurality of actuator cylinders, each cylinder operating at an initial pressure and an initial frequency, wherein the frequency of each of the cylinders is different, the system configured to perform the steps of:
- a) selecting a desired energy level of the system response;
- b) selecting a desired slope of the fast Fourier transform of the system response;
- c) changing an operational parameter of the cylinders by a pre-selected amount in order to create a first pressure/frequency condition, wherein the operational parameter is selected from the group consisting of pressure, frequency, and combinations thereof;
- d) determining the system response in terms of energy and slope of the fast Fourier transform of the system response under the first pressure/frequency condition;
- and
- e) storing the system response determination of the first pressure/frequency condition in a data storage medium.
A control system for a failure mode testing system having a determinable system response, wherein the testing system comprises:
- a plurality of actuator cylinders, each cylinder operating at a pressure and a frequency, wherein the frequency of each of the cylinders is different, the system configured to perform the steps of:
- a) selecting a desired energy level of the system response;
- b) selecting a desired slope of the fast Fourier transform of the system response;
- c) determining the energy level under a high pressure/high frequency condition and a low pressure/low frequency condition so as to define an energy level range;
- d) determining the slope of the fast Fourier transform of the system response under a high pressure/high frequency condition and a low pressure/low frequency condition so as to define a slope range;
- e) determining whether the desired energy level falls within the energy level range;
- and
- f) determining whether the desired slope of the fast Fourier transform of the system response falls within the slope range.
A control system for a failure mode testing system having a plurality of actuator cylinders, each cylinder operating at a pressure and a frequency, wherein the frequency of each of the cylinders is different, wherein the energy level and slope of the fast Fourier transform of the frequency are capable of changing in response to pressure and frequency, comprising:
- a processor configured to calculate the change in energy due to pressure (Dep) according to the formula:
- Dep=((EHH+EHL)−(ELH+ELL))/(2 dp), wherein EHH is the energy measured during a pressure/frequency condition corresponding to a high pressure/high frequency condition, EHL is the energy measured during a pressure/frequency condition corresponding to a high pressure/low frequency condition, ELH is the energy measured during a pressure/frequency condition corresponding to a low pressure/high frequency condition, ELL is the energy measured during a pressure/frequency condition corresponding to a low pressure/low frequency condition, and dp is the pre-selected amount by which the pressure is either increased or decreased.
A control system for a failure mode testing system having a determinable system response, wherein the testing system includes a plurality of actuator cylinders, each cylinder operating at a pressure and a frequency, wherein the frequency of each of the cylinders is different, wherein the energy level and slope of the fast Fourier transform of the system response are capable of changing in response to pressure and frequency, comprising:
- a processor configured to calculate the change in energy due to frequency (Def) according to the formula:
- Def=((EHH+ELH)−(EHL+ELL))/(2 df), wherein EHH is the energy measured during a pressure/frequency condition corresponding to a pressure/high frequency condition, ELH is the energy measured during a pressure/frequency condition corresponding to a low pressure/high frequency condition, EHL is the energy measured during a pressure/frequency condition corresponding to a high pressure/low frequency condition, ELL is the energy measured during a pressure/frequency condition corresponding to a low pressure/low frequency condition, and df is the pre-selected amount by which the frequency is either increased or decreased.
A control system for a failure mode testing system having a determinable system response, wherein the testing system includes a plurality of actuator cylinders, each cylinder operating at a pressure and a frequency, wherein the frequency of each of the cylinders is different, wherein the energy level and slope of the fast Fourier transform of the system response are capable of changing in response to pressure and frequency, comprising:
- a processor configured to calculate the change in slope of the fast Fourier transform of the system response due to pressure (Dsp) according to the formula:
- Dsp=((mHH+mHL)−(mLH+mLL))/(2 dp), wherein mHH is the slope of the fast Fourier transform of the system response measured during a pressure/frequency condition corresponding to a high pressure/high frequency condition, mHL is the slope of the fast Fourier transform of the system response measured during a pressure/frequency condition corresponding to a high pressure/low frequency condition, mLH is the slope of the fast Fourier transform of the system response measured during a pressure/frequency condition corresponding to a low pressure/high frequency condition, mLL is the slope of the fast Fourier transform of the system response measured during a pressure/frequency condition corresponding to a low pressure/low frequency condition, and dp is the pre-selected amount by which the pressure is either increased or decreased.
A control system for a failure mode testing system having a determinable system response, wherein the testing system includes a plurality of actuator cylinders, each cylinder operating at a pressure and a frequency, wherein the frequency of each of the cylinders is different, wherein the energy level and slope of the fast Fourier transform of the system response are capable of changing in response to pressure and frequency, comprising:
- a processor configured to calculate the change in slope of the fast Fourier transform of the system response due to frequency (Dsf) according to the formula:
- Dsf=((mHH+MLH)−(mHL+mLL))/(2 df), wherein mHH is the slope of the fast Fourier transform of the system response measured during a pressure/frequency condition corresponding to a high pressure/high frequency condition, mLH is the slope of the fast Fourier transform of the system response measured during a pressure/frequency condition corresponding to a low pressure/high frequency condition, mHL is the slope of the fast Fourier transform of the system response measured during a pressure/frequency condition corresponding to a high pressure/low frequency condition, mLL is the slope of the fast Fourier transform of the system response measured during a pressure/frequency condition corresponding to a low pressure/low frequency condition, and df is the pre-selected amount by which the frequency is either increased or decreased.
A control system for a failure mode testing system having a determinable system response, wherein the testing system includes a plurality of actuator cylinders, each cylinder operating at a pressure and a frequency, wherein the frequency of each of the cylinders is different, wherein the energy level and slope of the fast Fourier transform of the system response are capable of changing in response to pressure and frequency, comprising:
- a processor configured to calculate the average energy (E1) according to the following formula:
- E1=average (EHH, EHL, ELH, ELL), wherein EHH is the energy measured during a pressure/frequency condition corresponding to a high pressure/high frequency condition, EHL is the energy measured during a pressure/frequency condition corresponding to a high pressure/low frequency condition, ELH is the energy measured during a pressure/frequency condition corresponding to a low pressure/high frequency condition, and ELL is the energy measured during a pressure/frequency condition corresponding to a low pressure/low frequency condition.
A control system for a failure mode testing system having a determinable system response, wherein the testing system includes a plurality of actuator cylinders, each cylinder operating at a pressure and a frequency, wherein the frequency of each of the cylinders is different, wherein the energy level and slope of the fast Fourier transform of the system response are capable of changing in response to pressure and frequency, comprising:
- a processor configured to calculate the new target energy (E2) according to the following formula:
- E2=E1+(EDESIRED−E1)/n, wherein E1 is the average energy, EDESIRED is the desired energy level of the system response, and n is a number greater than 1.
A control system for a failure mode testing system having a determinable system response, wherein the testing system includes a plurality of actuator cylinders, each cylinder operating at a pressure and a frequency, wherein the frequency of each of the cylinders is different, wherein the energy level and slope of the fast Fourier transform of the system response are capable of changing in response to pressure and frequency, comprising:
- a processor configured to calculate the average slope of the fast Fourier transform of the system response (S1) according to the following formula:
- S1=average (mHH, mHL, mLH, mLL), wherein mHH is the slope of the fast Fourier transform of the system response measured during a pressure/frequency condition corresponding to a high pressure/high frequency condition, mHL is the slope of the fast Fourier transform of the system response measured during a pressure/frequency condition corresponding to a high pressure/low frequency condition, mLH is the slope of the fast Fourier transform of the system response measured during a pressure/frequency condition corresponding to a low pressure/high frequency condition, and mLL is the slope of the fast Fourier transform of the system response measured during a pressure/frequency condition corresponding to a low pressure/low frequency condition.
A control system for a failure mode testing system having a determinable system response, wherein the testing system includes a plurality of actuator cylinders, each cylinder operating at a pressure and a frequency, wherein the frequency of each of the cylinders is different, wherein the energy level and slope of the fast Fourier transform of the system response are capable of changing in response to pressure and frequency, comprising:
- a processor configured to calculate the new target slope of the fast Fourier transform of the system response (S2) according to the following formula:
- S2=S1+(SDESIRED−S1)/n, wherein S1 is the average slope of the fast Fourier transform of the system response, SDESIRED is the desired slope of the fast Fourier transform of the system response, and n is a number greater than 1.
A control system for a failure mode testing system having a determinable system response, wherein the testing system includes a plurality of actuator cylinders, each cylinder operating at a pressure and a frequency, wherein the frequency of each of the cylinders is different, wherein the energy level and slope of the fast Fourier transform of the system response are capable of changing in response to pressure and frequency, comprising:
- a processor configured to calculate calculating the new target pressure (PNEW) according to the formula:
- PNEW=[(DsfE2−DsfE1−DefS2+DefS1−DepDsfP)/(DefDsp−DepDsf)], wherein Def is the change in energy due to frequency, Dep is the change in energy due to pressure, Dsf is the change in slope of the fast Fourier transform of the system response due to frequency, Dsp is the change in slope of the fast Fourier transform of the system response due to pressure, E1 is the average energy, E2 is the new target energy, S1 is the average slope of the fast Fourier transform of the system response, and S2 is the new target slope of the fast Fourier transform of the system response.
A control system for a failure mode testing system having a determinable system response, wherein the testing system includes a plurality of actuator cylinders, each cylinder operating at a pressure and a frequency, wherein the frequency of each of the cylinders is different, wherein the energy level and slope of the fast Fourier transform of the system response are capable of changing in response to pressure and frequency, comprising:
- a processor configured to calculate the new target frequency (FNEW) according to the formula:
- FNEW=[(DspE2−DspE1−DepS2+DepS1−DepDsfF)/(DefDsp−DepDsf)], wherein Def is the change in energy due to frequency, Dep is the change in energy due to pressure, Dsf is the change in slope of the fast Fourier transform of the system response due to frequency, Dsp is the change in slope of the fast Fourier transform of the system response due to pressure, E1 is the average energy, E2 is the new target energy, S1 is the average slope of the fast Fourier transform of the system response, and S2 is the new target slope of the fast Fourier transform of the system response.
A control system for a failure mode testing system having a determinable system response, wherein the testing system includes a plurality of actuator cylinders, each cylinder operating at an initial pressure and an initial frequency, wherein the frequency of each of the cylinders is different, comprising a processor configured to perform the steps of:
- a) selecting a desired system response;
- b) changing an operational parameter of the cylinders by a pre-selected amount in order to create a first pressure/frequency condition, wherein the operational parameter is selected from the group consisting of pressure, frequency, and combinations thereof;
- and
- c) determining the system response under the first pressure/frequency condition.
A control system for a failure mode testing system having a determinable system response, wherein the testing system comprises:
- a plurality of actuator cylinders, each cylinder operating at an initial pressure and an initial frequency, wherein the frequency of each of the cylinders is different;
- a processor coupled to the plurality of actuator cylinders, said processor configured to perform the steps of:
- a) selecting a desired system response;
- b) determining the system response;
- c) determining whether the desired system response is present;
- and
- d) changing an operational parameter of the cylinders by a sufficient amount in order to achieve the desired system response, wherein the operational parameter is selected from the group consisting of pressure, frequency, and combinations thereof.
Dependencies are inferred from the claim text.