Abstract: A vehicle door opening/closing apparatus includes a mobile apparatus carried by a user, a recognizing apparatus for recognizing the mobile apparatus within a predetermined area relative to a vehicle, a commanding apparatus provided at the mobile apparatus for commanding an opening/closing operation of a door on the basis of an intention of the user and a controlling apparatus for controlling the door on the basis of a recognition of the recognizing apparatus and the opening/closing operation command of the commanding apparatus. The controlling apparatus opens the door when the recognizing apparatus recognizes the mobile apparatus within the predetermined area and in a situation where the commanding apparatus has commanded to open the door. The controlling apparatus closes the door when the recognizing apparatus recognizes that the mobile apparatus is out of the predetermined area and in a situation where the commanding apparatus has commanded to close the door.

Abstract: An opening and closing body control device includes an actuation device for actuating an opening and closing body which operates relative to a body, a speed detection device for detecting moving speed of the opening and closing body, and a control device for driving the actuation device based on detected results from the speed detection device. The control device conducts anti-pinch transaction when an object is pinched between the opening and closing body and the body. The control device includes a speed difference calculation device for calculating speed difference between latest speed and speed at predetermined time earlier, a speed difference memory device for memorizing predetermined number of the speed differences, an accumulation device for calculating accumulation value by accumulating predetermined number of speed differences, and a pinch detection device for conducting anti-pinch transaction by comparing the accumulation value and reference value for occurrence of pinch.

Abstract: A vehicle door opening/closing apparatus includes a mobile apparatus carried by a user, a recognizing apparatus for recognizing the mobile apparatus within a predetermined area relative to a vehicle, a commanding apparatus provided at the mobile apparatus for commanding an opening/closing operation of a door on the basis of an intention of the user and a controlling apparatus for controlling the door on the basis of a recognition of the recognizing apparatus and the opening/closing operation command of the commanding apparatus. The controlling apparatus opens the door when the recognizing apparatus recognizes the mobile apparatus within the predetermined area and in a situation where the commanding apparatus has commanded to open the door. The controlling apparatus closes the door when the recognizing apparatus recognizes that the mobile apparatus is out of the predetermined area and in a situation where the commanding apparatus has commanded to close the door.

Abstract: A control device of opening and closing member includes a driving means for driving, by means of a duty ratio control, an opening and closing member, a speed detecting means, and a controlling means for driving the opening and closing member based on a position of the opening and closing member, and stopping or reversing a movement of the opening and closing member. The controlling means includes a duty ratio determining means for providing a duty ratio to the driving means every predetermined number of periods so that a speed of the opening and closing member reaches the control speed, and increasing a duty ratio when a speed of the opening and closing member becomes below the target speed, and a duty ratio difference calculating means for calculating a difference between a present duty ratio and a duty ratio before a predetermined number of periods.

Abstract: An opening and closing body control device includes an actuation device for actuating an opening and closing body which operates relative to a body, a speed detection device for detecting moving speed of the opening and closing body, and a control device for driving the actuation device based on detected results from the speed detection device. The control device conducts anti-pinch transaction when an object is pinched between the opening and closing body and the body. The control device includes a speed difference calculation device for calculating speed difference between latest speed and speed at predetermined time earlier, a speed difference memory device for memorizing predetermined number of the speed differences, an accumulation device for calculating accumulation value by accumulating predetermined number of speed differences, and a pinch detection device for conducting anti-pinch transaction by comparing the accumulation value and reference value for occurrence of pinch.

Abstract: The energization control system for a motor equalizes the power loss of switching elements energizing coils of each phase of the motor in order to maintain a balance of heat development. The energization control system for a motor includes a plurality of phase coils and two switching elements. The energization control system of a motor supplies an electric current from the power source line to the coil when two switching elements are simultaneously conducted. Two switching elements are controlled under a first condition that one of the switching elements is switched every predetermined time while the other of the switching elements is conducted. Two switching elements are also controlled under a second condition that the other of the switching elements is switched every predetermined time while one of the switching elements is conducted. The first condition and the second conditions are repeated and synchronized to the predetermined time every predetermined period.

Abstract: An energization control device is provided to prevent rapid decrease of current which is flowing through each of phase coils of an electric motor. A time duration is divided into three stages which ranges from an initiation of the current supply to the phase coil to a termination of the current supply to the phase coil. At the first stage, the second stage, and the third stage, soft/hard chopping energization control, 0-volt energization, and duty chopping energization control, respectively, are made. Energizing the phase coil is made by way of a first switching element and a second switching element. At the first stage, depending on an actual current value being in excess of a target current value, either of or both of the first switching element and the second element are made OFF. At the second stage, while the second switching element is being made OFF, the second switching element is made ON.

Abstract: A rotary speed detector includes a rotating angle sensor for outputting digital signals which constitute rotating angle data of a rotating member, an angle variation calculator for calculating an angle variation with respect to a predetermined interval of time and a revolving speed calculator for calculating rotary speeds from the angle variation.

Abstract: In a chopping energization control device, a pair of switching elements IGBT/U and IGBT/IL are used to control an electric power supplied from a DC power source to a phase coil CL1 of a DC motor, particularly an SR motor, such that one of the switching elements is alternately turned on-and-off while the other is being turned on continually. To avoid uneven heat generations between the switching elements, an arrangement is provided wherein whenever a time elapses beyond a limit value of for example, 10 milliseconds the conditions of the respective switching elements are swapped with each other. Such a swapping is established cyclically which causes equal heat generations in the switching elements.

Abstract: In order to make an electric motor smooth in drive with improving the electric consumption efficiency, the over heat of a motor driver and vibrations thereat are restricted which result from chopping energization of the electric motor.

Abstract: An energization control device is provided to prevent rapid decrease of current which is flowing through each of phase coils of an electric motor. A time duration is divided into three stages which ranges from an initiation of the current supply to the phase coil to a termination of the current supply to the phase coil. At the first stage, the second stage, and the third stage, soft/hard chopping energization control, 0-volt energization, and duty chopping energization control, respectively, are made. Energizing the phase coil is made by way of a first switching element and a second switching element. At the first stage, depending on an actual current value being in excess of a target current value, either of or both of the first switching element and the second element are made OFF. At the second stage, while the second switching element is being made OFF, the second switching element is made ON.

Abstract: The energization control system for a motor equalizes the power loss of switching elements energizing coils of each phase of the motor in order to maintain a balance of heat development. The energization control system for a motor includes a plurality of phase coils and two switching elements. The energization control system of a motor supplies an electric current from the power source line to the coil when two switching elements are simultaneously conducted. Two switching elements are controlled under a first condition that one of the switching elements is switched every predetermined time while the other of the switching elements is conducted. Two switching elements are also controlled under a second condition that the other of the switching elements is switched every predetermined time while one of the switching elements is conducted. The first condition and the second conditions are repeated and synchronized to the predetermined time every predetermined period.

Abstract: A rotary speed detector includes a rotating angle sensor for outputting digital signals which constitute rotating angle data of a rotating member, an angle variation calculator for calculating an angle variation with respect to a predetermined interval of time and a revolving speed calculator for calculating rotary speeds from the angle variation.

Abstract: A chopping energization control device is made up of a first switching element interposed between one end of a load and one terminal of a power supply, a second switching element interposed between the other end of the load and the other terminal of the power supply, a signal generation device for generating an energization indication signal which makes the first switching element and the second switching element conductive in order to establish a chopping energization control of the load, and a control device for giving a delay, in response to the energization indication signal, between when the first switching element is made to be conductive and when the second switching element is made to be conductive.

Abstract: For detecting a coil short-circuit in an electric motor such as a switched reluctance motor, an apparatus includes a first phase coil, a second phase coil, and a third phase coil. Through each of the coils, a current, whose amount is sensed by a current sensor, flows in such manner that the amount ranges from zero to a reference current amount in a reference set-up time duration. If the detected amount of current by the current sensor becomes the reference current amount in a time duration which is shorter than the reference set-up time duration and the resultant condition continues for an another reference time duration, it is regarded that a short-circuit occurs in the phase coil corresponding to the current sensor and the apparatus stops the electric motor.

Abstract: A first comparison circuit compares the energization on angle outputted from a computer with the energization off angle outputted therefrom so as to output a first binary signal representing whether the latter is greater than the former. A second comparison circuit compares the energization on angle outputted from the computer with the rotation angle of the rotor outputted from the angle sensor so as to output a second binary signal representing whether the latter is greater than the former. A third comparison circuit compares the energization off angle outputted from the computer with the rotation angle of the rotor outputted from the angle sensor so as to output a third binary signal representing whether the latter is smaller than the former. A binary signal process circuit processes the first, second and third binary signals outputted from the first, second and third comparison means so as to output a fourth binary signal representing energization on and off.

Abstract: Angle bounds of a normal energization of the coil of an electric motor are generated in accordance with a combination of a rotation direction and a torque direction of the electric motor. Angle bounds of the decided energization are determined based on a decision of either energization or deenergization of the coil and the detected rotation angle of the rotor. An abnormal condition is determined to exist when the angle bounds of the decided energization are not within the angle bounds of the normal energization.

Abstract: A rising saw tooth signal generating circuit generates a rising saw tooth signal having a constant amplitude and a constant period which corresponds to a frequency being slightly higher than the human audible frequency range. The rising saw tooth signal generating circuit also generates a binary signal which generates a reference chopping timing synchronizing with the rising saw tooth signal. The rising saw tooth signal is inverted and a descending saw tooth signal is generated. The descending saw tooth signal is added to the reference current signal and a binary signal is generated by the result of the comparison between the addition signal and the actual current signal. A flip-flop generates a signal which reaches a low level whenever the binary signal is descended and which reaches a high level whenever the reference chopping timing comes. A further binary signal which moves to the high level at the feeding of the current and the signal are supplied to the AND gate.