Patent application number | Description | Published |
20100201300 | Control Techniques for Motor Driven Systems - Embodiments of the present invention provide a motor-driven mechanical system with a detection system to measure properties of a back channel and derive oscillatory characteristics of the mechanical system. Uses of the detection system may include calculating the resonant frequency of the mechanical system and a threshold drive D | 08-12-2010 |
20100201301 | CONTROL TECHNIQUES FOR MOTOR DRIVEN SYSTEMS - Embodiments of the present invention provide a drive signal for a motor-driven mechanical system whose frequency distribution has zero (or near zero) energy at the expected resonant frequency of the mechanical system. The drive signal may be provided as a pair of steps sufficient to activate movement of the mechanical system and then park the mechanical system at a destination position. The steps are spaced in time so as to have substantially zero energy at an expected resonant frequency f | 08-12-2010 |
20100201302 | CONTROL TECHNIQUES FOR MOTOR DRIVEN SYSTEMS - A drive signal for a motor-driven mechanical system has zero (or near zero) energy at an expected resonant frequency of the mechanical system. The drive signal may be provided in a series of steps according to a selected row of Pascal's triangle, wherein the number of steps equals the number of entries from the selected row of Pascal's triangle, each step has a step size corresponding to a respective entry of the selected row of Pascal's triangle, and the steps are spaced from each other according to a time constant determined by an expected resonant frequency of the mechanical system. Alternatively, the stepped drive signal may be provided as a series of uniform steps according to a selected row of Pascal's triangle, in which the steps are provided in a number of spaced intervals corresponding to the number of entries from the selected row of Pascal's triangle, each interval includes a number of steps corresponding to a respective entry from the selected row of Pascal's triangle and the intervals are spaced in time according to a time constant determined from the expected resonant frequency of the mechanical system. These techniques not only generate a drive signal with substantially no energy at the expected resonant frequency, they provide a zero-energy “notch” of sufficient width to tolerate systems in which the actual resonant frequency differs from the expected resonant frequencies. | 08-12-2010 |
20100202069 | Control Techniques for Motor Driven Systems - A drive signal for a motor-driven mechanical system has zero (or near zero) energy at an expected resonant frequency of the mechanical system. The drive signal may be provided in a series of steps according to a selected row of Pascal's triangle, wherein the number of steps equals the number of entries from the selected row of Pascal's triangle, each step has a step size corresponding to a respective entry of the selected row of Pascal's triangle, and the steps are spaced from each other according to a time constant determined by an expected resonant frequency of the mechanical system. Alternatively, the stepped drive signal may be provided as a series of uniform steps according to a selected row of Pascal's triangle, in which the steps are provided in a number of spaced intervals corresponding to the number of entries from the selected row of Pascal's triangle, each interval includes a number of steps corresponding to a respective entry from the selected row of Pascal's triangle and the intervals are spaced in time according to a time constant determined from the expected resonant frequency of the mechanical system. These techniques not only generate a drive signal with substantially no energy at the expected resonant frequency, they provide a zero-energy “notch” of sufficient width to tolerate systems in which the actual resonant frequency differs from the expected resonant frequencies. | 08-12-2010 |
20110050255 | SYSTEM AND METHOD FOR MEASURING CAPACITANCE - A system and method for testing capacitance of a load circuit connected to an output pin of a driving circuit In one embodiment, the method may comprise driving a voltage at the output pin to a first voltage; a predetermined current to the output pin; comparing the voltage at the output pin to a reference voltage; and when the voltage at the output pin matches the reference voltage, generating an estimate of capacitance present at the output pin based on a number of clock cycles occurring between an onset of a timed voltage change period and a time at which the voltage at the output pin matches the reference voltage. | 03-03-2011 |
20120229264 | SMART LINEAR RESONANT ACTUATOR CONTROL - The present invention provides a haptics control system that may include a driver to generate a continuous drive signal and to output the drive signal to a mechanical system on an electrical signal line, wherein the continuous drive signal causes the mechanical system to vibrate to produce a haptic effect. The haptics control system may further include a monitor, coupled to the electrical signal line, to capture a Back Electromotive Force (BEMF) signal generated by the mechanical system in the electrical signal line, to measure a BEMF signals attribute, and to transmit an adjustment signal to the driver based on the BEMF signals attribute. The driver is further configured to adjust the continuous drive signal according to the adjustment signal. | 09-13-2012 |
20120256578 | CONTROL TECHNIQUES FOR MOTOR DRIVEN SYSTEMS - A drive signal for a motor-driven mechanical system has zero (or near zero) energy at an expected resonant frequency of the mechanical system. These techniques not only generate a drive signal with substantially no energy at the expected resonant frequency, they provide a zero-energy “notch” of sufficient width to tolerate systems in which the actual resonant frequency differs from the expected resonant frequencies. | 10-11-2012 |
20140292249 | CONTROL TECHNIQUES FOR MOTOR DRIVEN SYSTEMS - Embodiments of the present invention provide a motor-driven mechanical system with a detection system to measure properties of a back channel and derive oscillatory characteristics of the mechanical system. Uses of the detection system may include calculating the resonant frequency of the mechanical system and a threshold drive D | 10-02-2014 |
Patent application number | Description | Published |
20110258791 | FOAMING POROUS PAD FOR USE WITH A MOTORIZED DEVICE - A foaming porous pad suitable for coupling to a hand-held device and for application to human skin includes a porous pad substrate and a foaming composition disposed on the porous pad substrate. The porous pad substrate includes a nonwoven pile fabric having a nonwoven backing layer and a pile comprising individual fibers extending from the backing layer. The nonwoven pile fabric has fibers having a denier of less than about 9. Other aspects of the disclosure include a kit including a foaming porous pad and a motorized handheld device, methods of making the foaming porous pad, and methods of using the foaming porous pad. | 10-27-2011 |
20110258796 | FOAMING POROUS PAD FOR USE WITH A MOTORIZED DEVICE - A foaming porous pad suitable for coupling to a hand-held device and for application to human skin includes a porous pad substrate and a foaming composition disposed on the porous pad substrate. The porous pad substrate includes a nonwoven pile fabric having a nonwoven backing layer and a pile comprising individual fibers extending from the backing layer. The nonwoven pile fabric has fibers having a denier of less than about 9. Other aspects of the disclosure include a kit including a foaming porous pad and a motorized handheld device, methods of making the foaming porous pad, and methods of using the foaming porous pad. | 10-27-2011 |
20110262645 | FOAMING POROUS PAD FOR USE WITH A MOTORIZED DEVICE - A foaming porous pad suitable for coupling to a hand-held device and for application to human skin includes a porous pad substrate and a foaming composition disposed on the porous pad substrate. The porous pad substrate includes a nonwoven pile fabric having a nonwoven backing layer and a pile comprising individual fibers extending from the backing layer. The nonwoven pile fabric has fibers having a denier of less than about 9. Other aspects of the disclosure include a kit including a foaming porous pad and a motorized handheld device, methods of making the foaming porous pad, and methods of using the foaming porous pad. | 10-27-2011 |
20150147474 | FOAMING POROUS PAD FOR USE WITH A MOTORIZED DEVICE - A foaming porous pad suitable for coupling to a hand-held device and for application to human skin includes a porous pad substrate and a foaming composition disposed on the porous pad substrate. The porous pad substrate includes a nonwoven pile fabric having a nonwoven backing layer and a pile comprising individual fibers extending from the backing layer. The nonwoven pile fabric has fibers having a denier of less than about 9. Other aspects of the disclosure include a kit including a foaming porous pad and a motorized handheld device, methods of making the foaming porous pad, and methods of using the foaming porous pad. | 05-28-2015 |