30results about How to "Simple controller" patented technology

A driving mechanism includes a driven member partially having a spherical surface, piezoelectric units that support the driven member between them and drive the driven member, and a base that holds the piezoelectric units. Each of the piezoelectric units includes a driving portion having a flat surface in contact with the spherical surface of the driven member, a first piezoelectric element that moves the driving portion along a first axis parallel to the flat surface, a second piezoelectric element that moves the driving portion along a second axis that is parallel to the flat surface and intersects the first axis, and a support member that supports the driving portion through the first and second piezoelectric elements.

A USB storage device having the function of preventing stored software from being deleted by mistake achieved with as simple a structure as possible. In the USB storage device, the storage area is divided into an area in which execution of reading, writing and deleting is allowed and an area in which only execution of reading is allowed. Information to make a USB mass storage class driver recognize these areas as areas corresponding, respectively, to logical unit numbers defined in the SCSI command set of the USB mass storage class driver owned by the host is stored in the USB storage device. The information includes logical unit numbers, formats, writing / deleting allowed / not allowed flag, logical block numbers and physical block numbers. By this, the USB mass storage class driver recognizes the USB storage device as a SCSI device having two logical units.

An elevator system uses a supercapacitor to store electric energy. Furthermore, the supercapacitor can be used as a source of reserve power in emergency situations, such as power failures. The supercapacitor is connected together with three switching branches to a rectified signal of the power supply of the motor. By closing and opening the switches, the supercapacitor can be charged when the motor load is small. When the motor load is large or when the power supply fails, the electric energy contained in the supercapacitor can be discharged for use by the motor. In an emergency, the motor drives the elevator at a speed lower than normal, and therefore a supply voltage lower than normal is sufficient. Also, energy obtained from braking of the elevator can be stored in the supercapacitor, which has a storage capacity of considerable magnitude as compared to an ordinary capacitor. By applying the invention, the energy consumption of the elevator can be reduced because the waste energy obtained from the power supply can be stored and utilized when more energy is needed.

A driving mechanism includes a driven member partially having a spherical surface, piezoelectric units that support the driven member between them and drive the driven member, and a base that holds the piezoelectric units. Each of the piezoelectric units includes a driving portion having a flat surface in contact with the spherical surface of the driven member, a first piezoelectric element that moves the driving portion along a first axis parallel to the flat surface, a second piezoelectric element that moves the driving portion along a second axis that is parallel to the flat surface and intersects the first axis, and a support member that supports the driving portion through the first and second piezoelectric elements.

A controller for a continuously variable transmission (CVT) mounted in a vehicle. The controller includes a first setting unit for setting a basic speed ratio of the CVT; a second setting unit for setting an adjustment speed ratio of the CVT; and a control unit for controlling the CVT based on the basic speed ratio and adjustment speed ratio. The second setting unit includes an increasing unit for progressively increasing the adjustment speed ratio according to a increase in a target torque interrelated value in a first operating area, and a decreasing unit for progressively decreasing the adjustment speed ratio according to a decrease in the target torque interrelated value in a second operating area. Between the first operating area and the second operating area, the second setting unit maintains the adjustment speed ratio that is set finally.

A USB storage device having the function of preventing stored software from being deleted by mistake achieved with as simple a structure as possible. In the USB storage device, the storage area is divided into an area in which execution of reading, writing and deleting is allowed and an area in which only execution of reading is allowed. Information to make a USB mass storage class driver recognize these areas as areas corresponding, respectively, to logical unit numbers defined in the SCSI command set of the USB mass storage class driver owned by the host is stored in the USB storage device. The information includes logical unit numbers, formats, writing / deleting allowed / not allowed flag, logical block numbers and physical block numbers. By this, the USB mass storage class driver recognizes the USB storage device as a SCSI device having two logical units.

The disclosure relates to a device comprising at least one delay line for applying a variable delay to a clock signal and a controller for controlling the variable delay of the delay line. Each delay line comprises a plurality of concatenated delay banks which provide different delay values with respect to each other, a bypass parallel over each of said the delay banks, and switching elements associated with each of the delay banks for selecting either the respective delay bank or the respective bypass. Each of the delay banks is provided with a delay bank status indicator for indicating propagation of the clock signal through the delay bank towards the controller. The controller is provided for taking the indicated propagation of the clock signal into account upon setting said switching elements. Devices according to this disclosure are, amongst other uses, suited for use in Ultra Wide Band (UWB) receiving or transmitting devices, in particular those devices, designed for low power consumption, by enabling power on and off switching of parts of such devices as analog to digital converters and integrators, during timing windows.

An actuator control method and an actuator control device that incorporate an element of feedback control in time optimal control, including: a calculation step of calculating a switching time at which an acceleration output is switched to a deceleration output and an end time of the deceleration output expressed by time elapsed from a calculation time at which calculation for control is performed using a maximum acceleration and a maximum deceleration, which are measured in advance, at the time of the maximum output of control force of an actuator; a control output step of setting the control force of the actuator to a maximum acceleration output from the calculation time to the switching time, setting the control force of the actuator to a maximum deceleration output from the switching time to the end time, and ending the output of the control force at the end time, and an update step of calculating and updating the switching time and the end time by repeating the calculation step at each preset time.

The invention proposes a power grid simulator having accurate harmonic voltage and virtual impedance control. The power grid simulator comprises a reactor, a rectification unit, a main inversion unit and an auxiliary inversion unit, wherein the rectification unit comprises a three-phase PWM rectifier and a PWM rectification controller, the main inversion unit comprises a main inverter and a main inversion controller, the auxiliary inversion unit comprises an auxiliary inverter and an auxiliary inversion controller, an input end of the three-phase PWM rectifier is accessed to a power grid through the reactor, an output end of the three-phase PWM rectifier is connected with the main inverter and the auxiliary inverter respectively, and an output end of the auxiliary inverter is connected with an output end of the main inverter. Compared with the prior art, the power grid simulator having accurate harmonic voltage and virtual impedance control, provided by the invention, has the advantages that a standard power grid output voltage, a power grid voltage fault working condition and a power grid harmonic component can be simulated, the power grid impedance change can also be simulated, and the demand of distributed power generation test research can be met very well.

The invention relates to a transmission for an electric vehicle. The transmission comprises a permanent magnetic speed adjustment part and a reduction gearbox; the permanent magnetic speed adjustment part includes a cylinder-shaped conductor rotor, a cylinder-shaped permanent magnetic rotor and a speed adjustment mechanism; the cylinder-shaped conductor rotor includes a conductor rotating cylinder, an inner-layer conductor and a driving flange; the conductor rotating cylinder is connected with the input shaft through the driving flange; the driving flange sleeves the input shaft; the driving flange is connected with the conductor rotating cylinder; the cylinder wall at the inner side of the conductor rotating cylinder is provided with the inner-layer conductor; the cylinder-shaped permanent magnetic rotor includes a permanent magnetic rotating cylinder, permanent magnets and a driven flange; two ends of a rotating shaft are supported on the reduction gearbox and the permanent magnetic rotating cylinder; the driven flange sleeves the rotating shaft; the driven flange is connected with the permanent magnetic rotating cylinder; the permanent magnets are embedded into the permanent magnetic rotating cylinder along the circumferential direction of the permanent magnetic rotating cylinder; a gap is left between the outer sides of the permanent magnets and the inner wall of the inner-layer conductor; and the speed adjustment mechanism includes an inner circular sleeve, an outer circular sleeve and a slider; the inner circular sleeve sleeves the outer circumferential surface of the driven flange; and the slider arranged on the outer circular sleeve is installed in a slide groove in the inner circular sleeve. The transmission for the electric vehicle of the invention is advantageous in excellent vibration isolation and damping effects, and smooth operation.

A vehicular integrated brake system has an EBS and an EPB system integrated in the system to simplify a brake control system and reduce costs. An EBS function and an EPB function are incorporated by adding an EPB valve in the EBS valve system, so that the actuation of the EBS valves and the EPB valve can be controlled by a single integrated controller. A separate pneumatic route connecting the EPB is removed to optimize the pneumatic route. Thus, it is possible to simplify the controller and to reduce costs.

The present invention relates to an integrated detection system and method for grid-connected and off-grid characteristics of an energy storage converter. The method includes: a grid-connected converter unit and a simulated converter unit. The grid-connected converter unit includes a rectifier module and an LCL filter The AC side of the rectifier module is connected to the power grid through the LCL filter, the DC side is connected to the DC side of the analog converter unit, and the AC side of the analog converter unit is connected to the measured energy storage converter; the present invention The technical solution provided proposes the topology of the integrated detection system for the on-grid / off-grid characteristics of the energy storage converter to improve the effectiveness of the detection system of the energy storage converter and the fit of the simulated power grid.