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8164233 |
Drive apparatus
A drive apparatus includes a first, a second, and a third frame, and a first and a second drive mechanism. The second frame is supported movably in a first direction with respect to the first...
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8143818 |
Ultrasonic motorized stage
An ultrasonic motorized stage includes a base part, first and second tables, first and second linear ultrasonic motors which respectively drive the first and the second tables, and first and second...
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8008836 |
Piezoelectric phase shifter
The disclosed is a piezoelectric phase shifter, which comprises: an input part for inputting input voltages; an output part for outputting output voltages; and a control part for tuning phase...
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7944115 |
Traveling wave grids with agitated surface using piezoelectric effect and acoustic traveling waves
A system for transporting particles includes a substrate and a plurality of spaced electrically conductive electrodes carried by the substrate. Further included is a carrier medium adapted for the...
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7936107 |
Drive wave generation circuit
To generate a drive wave for driving a piezo-actuator. Drive data concerning the number of drive waves supplied through a serial bus is stored in a drive data storage unit. A comparing circuit...
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7868518 |
Device for processing workpieces
A device for processing workpieces uses ultrasound, with an resonant system comprising an ultrasound generator, an ultrasound sonotrode, and an anvil, wherein a workpiece is processed between the...
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7839050 |
Drive apparatus for ultrasonic motor
A drive apparatus for an ultrasonic motor is provided wherein a diphase alternating drive signal having a predetermined phase difference and a predetermined drive frequency is applied to an...
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7830103 |
Method for driving ultrasonic motor
A method for driving an ultrasonic motor having an actuator section includes: a step of starting the ultrasonic motor by applying an AC voltage with a first frequency to the actuator section; a...
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7795780 |
Phase-locked loop and method for operating an electromechanical system
A phase-locked loop for controlling an electromechanical component comprises a digitally controlled oscillator (10), a phase comparator (20), and a digital loop filter (30). The digitally...
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7737604 |
Ultrasonic actuator
An ultrasonic actuator includes: an actuator body (5) including an actuator body (50); a control circuit (150) for setting a driving frequency; power supply sources (191, 192) for applying a...
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7697828 |
Integrated optical focusing/zooming system
An integrated optical auto focus and zooming system is provided, which includes a first optical lens, a first hollow casing, a second hollow casing, a plurality of piezoelectric elements. The first...
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7635940 |
Ultrasonic motor and microscope stage
An ultrasonic motor includes a vibrator formed by stacking a plurality of rectangular piezoelectric plates in a thickness direction, a driving circuit for applying a driving signal to a...
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7615909 |
Surface acoustic wave motor
In an energy recovery type surface acoustic wave motor, an increase in energy efficiency at the time of energy recovery and supply is achieved by adjusting phase change. A surface acoustic wave...
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7608979 |
Driving device and driving system
Drive technology is provided which makes suitable low velocity driving and smooth changing of driving velocity possible and achieves reduced power consumption. In the driving device, the drive unit...
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7608980 |
Vibration control apparatus and method
A vibration control apparatus capable of efficiently generating vibrations of different orders using the same electrodes. A plurality of electrodes polarized to have desired polarities are formed...
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7602100 |
Driving method and driving device for standing-wave-type ultrasonic actuator
The invention provides a driving method and driving device for a standing-wave-type ultrasonic actuator which can prevent falling of and eliminate unstable motion of a driven body during...
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7550896 |
Piezoelectric actuator system with position detection function and method thereof
A piezoelectric actuator system with a position detection function includes an immovable base, a piezoelectric material, a drive shaft, and a movable part. The immovable base has a driving circuit...
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7535153 |
Drive control method for a piezoelectric actuator, drive control apparatus for a piezoelectric actuator, and electronic device
The piezoelectric actuator drive control device has a controller, and executes an initialization process including an optimum phase difference acquisition process P1 and a phase difference...
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RE40709 |
Piezoactuator and drive circuit therefor
A piezoactuator has a diaphragm, and the diaphragm has flat piezoelectric elements that oscillate in a longitudinal oscillation mode and a sinusoidal oscillation mode. A first electrode for...
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7511403 |
High-powered actuators and actuating systems for extended range and precise positioning
A piezoelectric motor (PEM) is driven with loosely coupled inductors 24 and switching amplifier having a pulse width modulator 18, gate driver circuit 21 and two pairs of power mosfets 210, 212 and...
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7486002 |
Lateral piezoelectric driven highly tunable micro-electromechanical system (MEMS) inductor
A MEMS device comprising a substrate; an anchored end connected to the substrate; and an actuator comprising a first electrode; a piezoelectric layer over the first electrode; and multiple sets of...
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7459830 |
Piezoelectric actuator, drive control method of piezoelectric actuator, and electronic device
A piezoelectric actuator includes: a ring-shaped piezoelectric element, vibration of the piezoelectric element being transmitted to an object; a first vibration area and a second vibration area...
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7439650 |
Piezoactuator drive detection device and electronic device
To provide a drive detection means for a piezoelectric actuator that can detect an amount driven without requiring adding an encoder or other component while also preventing increasing the load. A...
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7382080 |
Piezoelectric ultrasonic motor driver
The present invention provides a piezoelectric ultrasonic motor driver which can perform self-oscillation, adjust the rotational direction of the motor, and be easy to manufacture. The motor...
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7375455 |
Ultrasonic motor driving device and ultrasonic diagnosis apparatus
An ultrasonic motor drive device capable of prolong the service life of an ultrasonic motor by preventing the motor from being unstably operated when the motor is driven at a lower speed of at...
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7365474 |
Driving system for vibrating type actuator and method of driving vibrating type actuator
Provided is a driving system for a vibrating type actuator capable of simplifying a driving circuit. A vibrating body of the vibrating type actuator can generate a first mode and a second mode...
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7352108 |
Piezoelectric driving device and a regulation method for a piezoelectric driving device
A piezoelectric driving device and a regulation method for a piezoelectric driving device are proposed. Piezoelectric driving devices known so far show a characteristic with which the electric...
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7298066 |
Drive apparatus for piezoelectric actuator, drive method for piezoelectric actuator, electronic device, control program for drive apparatus for piezoelectric actuator, and recording medium
A drive apparatus for a piezoelectric actuator prevents locking drive frequency in a state of resonance due to harmonics. There is no need to provide external components to filter, and circuitry...
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7247970 |
Drive method for piezoelectric actuator, drive apparatus for piezoelectric actuator, electronic device, control program for drive apparatus for piezoelectric actuator, and recording medium
A frequency of a drive signal supplied to a piezoelectric element is swept within a specific range, a detection signal indicating the vibrating state of a vibrating member is detected, and the...
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7161277 |
Driving device
In a drive apparatus having a vibration-generator including a plurality of electromechanical conversion elements, a plurality of weights located between each of the electromechanical conversion...
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7154208 |
Control apparatus for vibration type actuator
The present invention relates to apparatus achieving improvement in operation characteristics in the operation of stopping or reversing the direction of or decelerating movement of a vibrating wave...
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7129618 |
Control apparatus capable of low-speed driving of vibration type driving apparatus, actuating apparatus using the control apparatus, control method capable of low-speed driving of vibration type driving apparatus, and storage medium storing program including program codes capable of realizing the control method
A control apparatus and a control method for a vibration type driving apparatus are disclosed which can maintain output performance even when low-speed driving is continued for a long time. The...
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7119475 |
Driving method of piezoelectric actuator, driving apparatus of piezoelectric actuator, electronic watch, electronics, control program of piezoelectric actuator, and storage medium
A drive device for a piezoelectric actuator, wherein the time needed to achieve highly efficient drive conditions is shortened to reduce power consumption, and stabilized control can be performed....
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7085484 |
Driving device, position controller provided with driving device, and camera provided with position controller
A driving device for an ultrasonic actuator for driving a movable member is provided with a member sensor for detecting a present position of the movable member, a calculator for calculating a...
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7005776 |
Ultrasonic motor and electronic apparatus equipped with ultrasonic motor
An ultrasonic motor comprises a piezoelectric vibrating member having a detecting polarized portion for detecting a drive signal having a drive frequency of the detecting polarized portion and a...
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6967429 |
Power output stage for capacitive loads
A power output stage for capacitive loads includes: an energy storage inductance, having one end connected to a reference potential and an opposite end connected on the input side to a power supply...
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6965188 |
Ultrasonic-actuator driving apparatus and ultrasonic-actuator driving method
An ultrasonic-actuator driving apparatus includes an ultrasonic actuator including a transducer and a driven body that is in contact with the transducer, the transducer to which a frequency signal...
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6885132 |
Control apparatus for vibration type actuator, vibration type actuator system, and method for controlling vibration type actuator
A control apparatus for a vibration type actuator is disclosed, with which at least three kinds of vibrations are excited, and a desired motion can be carried out with high efficiency. The...
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6815871 |
Drive mechanism and drive method employing circuit for generating saw-tooth waveform voltage
An actuator using a piezoelectric element. The actuator includes: the piezoelectric element, which is capacitive; an inductor; and a resistor. The piezoelectric element, the inductor and the...
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6803699 |
Drive mechanism employing electromechanical transducer and drive method therefor
An actuator using a piezoelectric element and an operating method thereof. The actuator includes: the piezoelectric element; a drive rod fixed to the piezoelectric element; a moving unit engaging...
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6717329 |
Drive mechanism employing electromechanical transducer and method for controlling the drive mechanism
An actuator using vibration caused by a piezoelectric element. The actuator includes: an driving rod bonded to one of the piezoelectric element; a engaging member for engaging frictionally with the...
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6692164 |
Apparatus for cleaning a substrate on which a resist pattern is formed
A method of forming a resist pattern on a substrate, comprises the steps of: forming a resist film on the substrate, supplying a developing solution onto the resist film, submerging the substrate...
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6661154 |
Driving apparatus and method using electromechanical conversion elements
In a truss-type driving apparatus, the amplitude of each displacement member and the phase difference therebetween are detected, and by adjusting the amplitudes or the phases of the impressed...
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6657361 |
Piezoelectric drive device
The invention relates to a piezoelectric drive device with a bimodal piezoelectric resonator, with at least a first control electrode for triggering the resonator in a first drive direction, with...
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6617754 |
Circuit for the dynamic control of ceramic solid-state actuators
The invention relates to a circuit arrangement for the dynamic control of ceramic solid-state actuators, such as piezotranslators with energy recovery by means of magnetic intermediate stores...
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6512321 |
Driving apparatus and method of using same
A driving apparatus includes an electromechanical conversion element that expands and contracts through the application of a drive voltage, the electromechanical conversion element includes a first...
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6437480 |
Apparatus and method for driving an ultrasonic motor to reduce rise response time
An apparatus and method for driving an ultrasonic motor to reduce the rise response time. The ultrasonic motor is drivable at different frequencies and has a desired target speed, each frequency...
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6417598 |
Power circuit for piezo-electric motor
Power circuit for traveling or standing wave piezo-electric motors comprising a series resonant circuit, a switching element (T1) in parallel with the capacitor C of the resonant circuit and a...
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6400063 |
Ultrasonic motor and electronic apparatus having an ultrasonic motor
A long-life ultrasonic motor is provided which increases the output and efficiency and reduces the wear on a moving body. By mounting such an ultrasonic motor on an electronic apparatus, the...
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6384550 |
Speaker and drive device therefor
A sound signal from an audio amplifier is converted to a speed signal by a drive circuit, and a cone sheet which forms a diaphragm is driven by a supersonic wave motor driven by a travelling...
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