CONTROL APPARATUS, POWER TRANSMISSION APPARATUS, POWER RECEPTION APPARATUS, AND CONTROL METHOD
First Claim
1. A control apparatus comprising:
- a controller that sets a first resonator condition under which a variable impedance element connected to a first resonator has a first impedance, commands a frequency-variable signal source to perform a first frequency sweep on an input signal to a second resonator coupling with the first resonator under the first impedance condition, sets a second impedance condition under which the variable impedance element has a second impedance different from the first impedance, and commands the frequency-variable signal source to perform a second frequency sweep on the input signal under the second impedance condition, the frequency-variable signal source generating the input signal; and
an estimator that detects at least one first specific frequency that provides the input signal with a maximal value or a minimal value during a period when the first frequency sweep is performed, detects at least one second specific frequency that provides the input signal with a maximal value or a minimal value during a period when the second frequency sweep is performed, and estimates, based on the first specific frequency and the second specific frequency, at least one of a coupling coefficient for coupling between the first resonator and the second resonator, a first resonant frequency of the first resonator, and a second resonant frequency of the second resonator.
1 Assignment
0 Petitions
Accused Products
Abstract
According to an embodiment, a control apparatus includes a controller and an estimator. The controller commands a frequency-variable signal source to perform a first frequency sweep on an input signal to a second resonator coupling with the first resonator under the first impedance condition. The frequency-variable signal source generates the input signal. The controller commands the frequency-variable signal source to perform a second frequency sweep on the input signal under the second impedance condition. The estimator detects at least one first specific frequency that provides the input signal with a maximal value or a minimal value during a period when the first frequency sweep is performed. The estimator detects at least one second specific frequency that provides the input signal with a maximal value or a minimal value during a period when the second frequency sweep is performed. The estimator estimates, based on the first specific frequency and the second specific frequency, at least one of a coupling coefficient for coupling between the first resonator and the second resonator, a first resonant frequency of the first resonator, and a second resonant frequency of the second resonator.
-
Citations
28 Claims
-
1. A control apparatus comprising:
-
a controller that sets a first resonator condition under which a variable impedance element connected to a first resonator has a first impedance, commands a frequency-variable signal source to perform a first frequency sweep on an input signal to a second resonator coupling with the first resonator under the first impedance condition, sets a second impedance condition under which the variable impedance element has a second impedance different from the first impedance, and commands the frequency-variable signal source to perform a second frequency sweep on the input signal under the second impedance condition, the frequency-variable signal source generating the input signal; and an estimator that detects at least one first specific frequency that provides the input signal with a maximal value or a minimal value during a period when the first frequency sweep is performed, detects at least one second specific frequency that provides the input signal with a maximal value or a minimal value during a period when the second frequency sweep is performed, and estimates, based on the first specific frequency and the second specific frequency, at least one of a coupling coefficient for coupling between the first resonator and the second resonator, a first resonant frequency of the first resonator, and a second resonant frequency of the second resonator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
-
28. A control method comprising:
-
setting a first resonator condition under which a variable impedance element connected to a first resonator has a first impedance; commanding a frequency-variable signal source to perform a first frequency sweep on an input signal to a second resonator coupling with the first resonator under the first impedance condition, the frequency-variable signal source generating the input signal; setting a second impedance condition under which the variable impedance element has a second impedance different from the first impedance; commanding the frequency-variable signal source to perform a second frequency sweep on the input signal under the second impedance condition; detecting at least one first specific frequency that provides the input signal with a maximal value or a minimal value during a period when the first frequency sweep is performed; detecting at least one second specific frequency that provides the input signal with a maximal value or a minimal value during a period when the second frequency sweep is performed; and estimating, based on the first specific frequency and the second specific frequency, at least one of a coupling coefficient for coupling between the first resonator and the second resonator, a first resonant frequency of the first resonator, and a second resonant frequency of the second resonator.
-
Specification