Testing an inductive load of a device using a modulated signal
First Claim
1. A method for testing an inductive load of a device, the method comprising:
- effectuating application of a modulated test signal, by test circuitry, to the inductive load of the device;
obtaining a result signal, by the test circuitry, in response to the application of the modulated test signal to the inductive load of the device; and
based on the result signal, generating, by the test circuitry, an output signal indicating that the inductive load of the device is in one of (i) a shorted inductive load state, (ii) a normal inductive load state, and (iii) an abnormally high inductive load state;
wherein the device is a guidable projectile; and
wherein the method further comprises enabling, by the test circuitry, launch of the guidable projectile when the output signal indicates that the inductive load of the device is in the normal inductive load state, and disabling launch of the guidable projectile when the output indicates that the inductive load is in either of (i) the shorted inductive load state, and (ii) the abnormally high inductive load state.
2 Assignments
0 Petitions
Accused Products
Abstract
A device has built-in inductive load testing capabilities. The device includes a device housing, an inductive load disposed within the device housing; and test circuitry disposed within the device housing. The test circuitry is constructed and arranged to effectuate application of a modulated test signal to the inductive load, and obtain a result signal in response to the application of the modulated test signal to the inductive load. The test circuitry is further constructed and arranged to generate an output signal indicating that the inductive load is in one of (i) a shorted inductive load state, (ii) a normal inductive load state, and (iii) an abnormally high inductive load state, based on the result signal. Such test circuitry is well-suited for testing a variety of devices having inductors/coils which are susceptible to defects (e.g., a solenoid, a motor winding, various actuator components, etc.).
6 Citations
20 Claims
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1. A method for testing an inductive load of a device, the method comprising:
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effectuating application of a modulated test signal, by test circuitry, to the inductive load of the device; obtaining a result signal, by the test circuitry, in response to the application of the modulated test signal to the inductive load of the device; and based on the result signal, generating, by the test circuitry, an output signal indicating that the inductive load of the device is in one of (i) a shorted inductive load state, (ii) a normal inductive load state, and (iii) an abnormally high inductive load state; wherein the device is a guidable projectile; and wherein the method further comprises enabling, by the test circuitry, launch of the guidable projectile when the output signal indicates that the inductive load of the device is in the normal inductive load state, and disabling launch of the guidable projectile when the output indicates that the inductive load is in either of (i) the shorted inductive load state, and (ii) the abnormally high inductive load state. - View Dependent Claims (2, 3, 4)
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5. A device, comprising:
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a device housing; an inductive load disposed within the device housing; test circuitry disposed within the device housing, the test circuitry being constructed and arranged to; effectuate application of a modulated test signal to the inductive load, obtain a result signal in response to the application of the modulated test signal to the inductive load, and generate an output signal indicating that the inductive load is in one of (i) a shorted inductive load state, (ii) a normal inductive load state, and (iii) an abnormally high inductive load state, based on the result signal; wherein the device is a guidable projectile; and wherein the test circuitry is further constructed and arranged to enable launch of the guidable projectile when the output signal indicates that the inductive load is in the normal inductive load state, and disable launch of the guidable projectile when the output indicates that the inductive load is in either of (i) the shorted inductive load state, and (ii) the abnormally high inductive load state. - View Dependent Claims (6)
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7. A device, comprising:
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a device housing; an inductive load disposed within the device housing; test circuitry disposed within the device housing, the test circuitry being constructed and arranged to; effectuate application of a modulated test signal to the inductive load, obtain a result signal in response to the application of the modulated test signal to the inductive load, and generate an output signal indicating that the inductive load is in one of (i) a shorted inductive load state, (ii) a normal inductive load state, and (iii) an abnormally high inductive load state, based on the result signal; wherein the device is a guidable projectile; wherein the inductive load is a motor winding involved in steering the guidable projectile while the guidable projectile is in flight; and wherein the test circuitry includes a switching circuit and a controller, the switching circuit being disposed between the motor winding and a power rail, the controller being constructed and arranged to drive the switching circuit with a pulse width modulated control signal to direct the switching circuit to apply the modulated test signal from the power rail to the motor winding involved in steering the guidable projectile. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A guidable projectile deployment system, comprising:
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a support platform; a command interface supported by the support platform; and a guidable projectile supported by the support platform, the guidable projectile having a housing, an inductive load disposed within the housing, and test circuitry disposed within the housing, the test circuitry being constructed and arranged to; effectuate application of a modulated test signal to the inductive load in response to a command from the command interface, obtain a result signal in response to the application of the modulated test signal to the inductive load, and generate an output signal and provide the output signal to the command interface, the output signal indicating that the inductive load is in one of (i) a shorted inductive load state, (ii) a normal inductive load state, and (iii) an abnormally high inductive load state, based on the result signal. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification