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73results about How to "Simplified suppression" patented technology

Liquid ejecting apparatus and controlling unit of liquid ejecting apparatus

A liquid ejecting apparatus of the invention includes: a pressure-generating chamber having an inside space whose volume is changeable, into which a liquid is supplied and which is communicated with a nozzle, a resonance frequency of said pressure-generating chamber having a period of Tc; a signal-generating unit that generates a driving signal having: a first signal-element for causing the pressure-generating chamber to expand, a second signal-element for causing the pressure-generating chamber to contract from an expanding state thereof in order to eject a drop of the liquid through the nozzle, and a third signal-element for causing the pressure-generating chamber to expand to an original state before outputting the first signal-element after the drop of the liquid is ejected; and a pressure-generating unit that causes the pressure-generating chamber to expand and contract, based on the driving signal. The third signal-element has: a first-step element for causing the pressure-generating chamber to expand to an intermediate contracting state, which is smaller than the original state before outputting the first signal-element; and a second-step element for causing the pressure-generating chamber of the intermediate contracting state to the original state before outputting the first signal-element. The first-step element and the second-step element are substantially discontinuous in at least one of applying time or inclination.
Owner:SEIKO EPSON CORP

Method of training a dog to chew acceptable objects through scent marking and chemical composition thereof

A positive-reinforced method of training a dog to chew or mouth only appropriate household items and chew toys. The method includes scent-training the dog (or puppy) to recognize a particular distinctive scent not normally found in nature as applied to an acceptable chewing object. The dog is introduced to the distinctive scent and encouraged to chew the marked acceptable chewing object. Each time the dog recognizes the scent, the dog is encouraged to chew the scented chewing object or some other acceptable chewing object marked with the distinctive scent and rewarded. The dog is tested with at least one unmarked object. The dog is trained once the dog can discriminate between the scent-marked object or objects and the unmarked object or objects. From there, the scent may be applied to other household items that are acceptable chewing/mouthing items (e.g., other chew toys). By absence of the scent, the dog recognizes that it cannot chew on unacceptable items (e.g., furniture, shoes). The scent may be applied to acceptable chewing/mouthing items in liquid form or as a gel. The scent is aromatic to dogs but not to people. The invention also includes the chemical composition of the scent used in the method training. The preferred chemical composition comprises of one part animal secretion, one part disparate animal secretion, and three parts aqueous solution.
Owner:SCENTS ABILITY

Method of training a dog to chew acceptable objects through scent marking and chemical composition thereof

A positive-reinforced method of training a dog to chew or mouth only appropriate household items and chew toys. The method includes scent-training the dog (or puppy) to recognize a particular distinctive scent not normally found in nature as applied to an acceptable chewing object. The dog is introduced to the distinctive scent and encouraged to chew the marked acceptable chewing object. Each time the dog recognizes the scent, the dog is encouraged to chew the scented chewing object or some other acceptable chewing object marked with the distinctive scent and rewarded. The dog is tested with at least one unmarked object. The dog is trained once the dog can discriminate between the scent-marked object or objects and the unmarked object or objects. From there, the scent may be applied to other household items that are acceptable chewing / mouthing items (e.g., other chew toys). By absence of the scent, the dog recognizes that it cannot chew on unacceptable items (e.g., furniture, shoes). The scent may be applied to acceptable chewing / mouthing items in liquid form or as a gel. The scent is aromatic to dogs but not to people. The invention also includes the chemical composition of the scent used in the method training. The preferred chemical composition comprises of one part animal secretion, one part disparate animal secretion, and three parts aqueous solution.
Owner:SCENTS ABILITY

Method for determining q-axis current compensation value of permanent magnet synchronous motor and pulsation suppression metho

The invention discloses a method for determining a q-axis current compensation value of a permanent magnet synchronous motor and a pulsation suppression method. The method comprises the following steps: synchronously acquiring a q-axis current feedback signal iq and a rotor position signal theta m, determining a position interval of a rotor based on the theta m, accumulating the interval times by1 and performing synchronous averaging on the iq, and repeatedly acquiring until the accumulated value of the interval times is greater than a threshold value and all the intervals are not overlappedto form a circle of the rotor; performing fast Fourier transform on the synchronous average value corresponding to each interval arranged in sequence to obtain frequency domain characteristic information, determining the amplitude and the phase angle of a to-be-compensated spatial frequency component from the frequency characteristic information, and constructing a q-axis current compensation function; and obtaining a q-axis current compensation value based on the position of the actual compensation moment of the motor rotor and the current compensation function. Time domain information is converted into a space domain, time lag is avoided, the whole process does not affect the dynamic performance of the system, extra devices are not needed, structures and parameters of all control links do not need to be adjusted, and operation is easy.
Owner:HUAZHONG UNIV OF SCI & TECH
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