摘要:
Conditions for permitting operation of vibration control are that; a stored charge of a battery 17 for an electric motor detected by storage state monitoring devices 15 and 24 is larger than a predetermined storage charge threshold, a vehicle's engine is idling, engine speed is within a prescribed range, and engine load is within a prescribed range. When all these conditions are satisfied, vibration damping control by a vibration damping control device is performed.
摘要:
The present invention provides an active control system for coupling the movements of a pair of independently operated manual input devices such as dual flight control sticks operated by a pilot and co-pilot flying an aircraft. Each input device is configured to receive manual input data in the form of angular displacement of the device about one or more rotational axes. The active control system provides desired tactile feedback to an operator who displaces one of the manual input devices in the form of a restorative centering force. If an external system such as an auto-pilot system is engaged, the restorative force may be in a direction necessary to reconcile manual displacement of the input device with a position commanded by the external system, rather than directed toward the center position. The system also acts to reflect manual displacement of each input device as a force applied to the other. For example, when a pilot moves his or her control stick forward, the co-pilot will feel a like force tending to move the co-pilot's control stick forward.
摘要:
A system and method for damping of resonant peaks in an electric motor which is operated using a converter with an intermediate voltage circuit, by means of a matched impedance to ground at the motor star point, and a corresponding electric motor is disclosed. In a converter system having an intermediate voltage circuit which operates with a mains system input inductor in the step-up converter mode or has other input-side inductances, there is a risk of natural system oscillations being formed via discharge capacitances in conjunction with motors. If the motor now has an amplitude/frequency response with a pronounced resonant frequency in the region of such natural system oscillations, then there is a risk of higher voltages occurring at the motor star point than in the motor phases. This is prevented by the present invention by a termination of the lattice network, which is formed by the winding sections, in the motor at the motor star point by means of a suitably selected impedance with respect to ground, which advantageously comprises a series circuit formed from a non-reactive resistance and a capacitance.
摘要:
In a converter system having an intermediate voltage circuit which operates with a supply network-side input inductor in the step-converter mode or has other input-side inductances, there is a risk of natural system oscillations being formed via discharge capacitances in conjunction with motors. If the motor now has an amplitude/frequency response with a pronounced resonant frequency in the region of such natural system oscillations, then there is a risk of higher voltages occurring at the motor star point (S) than in the motor phases (I, V, W). This is prevented by the present invention by introducing an impedance (Z), in particular at the input to the motor, in order to damp capacitive discharge currents to ground potential, which are caused by system oscillations (fsys) (excited asymmetrically with respect to ground in the motor phases (U, V, W)) of the converter system (LK, UR, LT, M) in the winding sections.
摘要:
To provide a vibration-damping positioning controller capable of effecting stable positioning operation within a short period of time. The vibration-damping positioning controller has an integrator 6 for integrating a differential value of the target position command; a subtracter 7 which subtracts the position command from an output of the integrator 6, to thereby output a position command error; a stable prefilter 1 which receives a the differential value of the target position command and eliminates a frequency component identical with a vibration pole &ohgr;0 of the feedback control system 5; command fixing means 2 which receives an output from the stable prefilter 1 and the position command error, judges that the command is started when a differential value of the target position command has changed from zero to a non-zero value, judges that the command is ended when the differential value of the target position command has changed from a non-zero value to zero, outputs zero from the time the position command error has assumed zero after the command is ended until the next command is started, and in other cases produces an output of the stable prefilter 1 in an unmodified form; and a second integrator 4 which integrates an output from the command fixing means 2, to thereby output the position command.
摘要:
Systems and methods for reducing unwanted vibration in motion system are provided using a Robust Vibration Suppression (RVS) methodology, in which acceleration frequency spectra are obtained for each of a number of command input functions developed for moving a load a specified distance within a specified move time interval using an actuator. The frequency spectra comprise peaks, with notches defined between adjacent peaks. A desirable command input function is one with a frequency spectra having either a notch with a maximum width or a peak with a minimum magnitude relative to frequency spectra associated with other command input functions, or, alternatively, a peak with a magnitude of less than or equal to a pre-established magnitude or a frequency notch having a width greater than or equal to a pre-established width. A suitable command input function may be characterized by a ramp function, a cosine function, a sine function, or a combination thereof. The period of a suitable command input function is related to a fundamental natural frequency of the motion control system. A bridge circuit may be employed to reduce motor ripple torque, and a control circuit may be employed to compensate for back EMF. A computer-based system may be used to design, test, and optimize a motion control system using RVS principles. Various system components may be graphically modeled. Command input functions may be applied to the system, modified, and optimized. Various graphical and character data may be displayed. RVS design software may be embodied in a computer-readable article of manufacture.
摘要:
An electric motor-driven servo-drive for a motor vehicle lock in which, instead of an AND gate implemented using circuitry with two switches, a mechanical AND gate using an actuating element (10) or a magnetic sensor is used with a single switch.
摘要:
A full-closed control apparatus for performing velocity control based on a velocity signal of a motor and performing position control based on a position signal of a load driven by the motor, including: an equivalent rigid system velocity loop model; a band-pass filter; an amplitude adjuster; and a unit for inputting a velocity instruction of a velocity control loop into the equivalent rigid system velocity loop model, inputting a difference signal obtained by subtracting an output of the equivalent rigid system velocity loop model from a velocity signal of the load into the band-pass filter, inputting an output of the band-pass filter into the amplitude adjuster and outputting a signal obtained by adding an output of the amplitude adjuster to an output of a position controller, as a new velocity instruction.
摘要:
An automatic antenna direction controller which automatically turns an antenna rotor and connected antenna to a desired direction which is preselected by a pointer knob. A dual use meter needle is utilized by action of the pointer knob to select the azimuth of an antenna and to indicate the actual azimuth. A multi-color status LED indicator indicates different colors corresponding to the percentage of rotational completion completed. Control is offered by onboard circuitry for automatic brake release and setting, preset electronic end points for rotation limits, overshoot protection, and an unstick routine. Optional control can also be managed by an outboard computer through an RS-232 connection.
摘要:
Process for setting controller parameters (PA, K1 . . . Kn) of a state controller (SC) which, together with a plant (PL), forms a closed control circuit (C). The controller parameters (PA, K1 . . . Kn) are variable only in such manner that, in a representation of the poles (P1 . . . P5) of the closed control circuit (C) in a complex frequency range plane (FP, IM, RE), the setting of the controller parameters causes a shift of the poles (P1 . . . P5) approximately along semi-circular arcs (K) and/or origin rays (A1 . . . A3). It is advantageous that according to the process of the invention the setting of the controller parameters (PA, K1 . . . Kn) of the state controller (SC) can be performed by setting predetermined setting parameters that are, from a control-technological standpoint, easily understandable and recognizable. Such parameters are, for example, amplitude factor (&kgr;), rise time (&mgr;), or transient recovery time (t).