Mobile apparatus comprises first brake component and second brake component. Control method comprises: obtaining first operation, and determining braking strategy according to the first operation; determining, according to the braking strategy, first parameter corresponding to the first brake component and second parameter corresponding to the second brake component; controlling the first brake component according to the first parameter to perform first braking procedure; generating control signal corresponding to the second parameter, and controlling the second brake component according to the control signal to perform second braking procedure. Brake lever device comprises: brake lever hood, brake lever mounted on the brake lever hood, and brake force detection device disposed in the brake lever hood. The brake force detection device generates corresponding braking intensity signal with respect to the distance moved by the brake lever. The braking intensity signal generates electronic braking force corresponding to the distance moved by the brake lever.

An impact protection structure includes an impact frame and one or more impact bars connected to the impact frame through one or more impact buffers. The impact buffers are configured to linearly absorb an impact force over a predetermined displacement distance. The impact bars can include slotted holes for receiving hinge pins connecting the impact bars to the impact buffers. The impact frame can be connected to a vehicle frame in a manner that permits some deformation of the vehicle frame without deforming the impact frame. One or more sensors can be provided to detect impacts. An impact alert signal can trigger a drive-inhibit function that removes torque from the drive motor. A manual override can permit an operator to drive the vehicle during the drive-inhibit function until the drive-inhibit function is reset by authorized service personnel. Additional equipment can be retrofitted to the vehicle using the impact frame.

A motor driving control device includes: a motor driving unit for selectively energizing coils of a plurality of phases of a motor; a control circuit unit for outputting a driving control signal to the motor driving unit to control an operation of the motor driving unit; and a position detector corresponding to one phase out of the plurality of phases, the position detector outputting a position signal having a phase varying according to a position of a rotor of the motor, wherein when starting activation of the motor, the control circuit unit executes first control for causing the motor to perform short-circuit braking, and second control for starting a first lock operation in which the rotor is locked by energizing coils of a predetermined energization phase out of the plurality of phases with a first current value after the first control is executed, and when executing the first control, the control unit performs the short-circuit braking from the start of the short-circuit braking of the motor until variation of a predetermined pattern of the phase of the position signal has not been detected over a first predetermined time, or from the start of the short-circuit braking of the motor until a second predetermined time longer than the first predetermined time has elapsed.

An electric work vehicle includes: an electric motor unit including a plurality of motors (21, 22, and 130); a motor control unit (50) that adjusts electric power from a battery (20) and supplies the adjusted electric power to the electric motor unit by controlling an inverter (4); a charge control section (53) that controls charging and discharging of the battery (20); a battery state detection device (9) that detects a state of the battery (20) including a rate of charge; and a regenerative electric power detection device (6) that detects a generation of regenerative electric power. When the rate of charge is in a margin region that is set between an overcharge region and a charge/discharge region, and when regenerative electric power is generated, the motor control unit (50) supplies the regenerative electric power to a motor that is not in operation, and provides a non-rotation current instruction to the inverter (4), the non-rotation current instruction being an instruction for generating a magnetic flux that does not cause the motor to rotate by using vector control.

A motor driving control device includes: a motor driving unit for selectively energizing coils of a plurality of phases of a motor; a control circuit unit for outputting a driving control signal to the motor driving unit to control an operation of the motor driving unit; and a position detector corresponding to one phase out of the plurality of phases, the position detector outputting a position signal having a phase varying according to a position of a rotor of the motor, wherein when starting activation of the motor, the control circuit unit executes first control for causing the motor to perform short-circuit braking, and second control for starting a first lock operation in which the rotor is locked by energizing coils of a predetermined energization phase out of the plurality of phases with a first current value after the first control is executed, and when executing the first control, the control unit performs the short-circuit braking from the start of the short-circuit braking of the motor until variation of a predetermined pattern of the phase of the position signal has not been detected over a first predetermined time, or from the start of the short-circuit braking of the motor until a second predetermined time longer than the first predetermined time has elapsed.

A brake system for a vehicle having a master brake cylinder, which provides a pressure signal, having a brake-medium reservoir connected to the master brake cylinder, and a first brake circuit, which is coupled by a first input to the master brake cylinder and by a second input to the brake-medium reservoir, and having at least one first wheel-brake cylinder, which is mounted at a first wheel, in order to exert a force corresponding to the pressure signal onto the first wheel, and having a separator valve, which is configured between the first input and the first wheel-brake cylinder, to prevent further transmission of the pressure signal upon receipt of a supplied closing signal; and having a control valve, which is configured between the first input and the first wheel-brake cylinder; in order to control an inflow of a brake medium from brake-medium reservoir to the first wheel-brake cylinder. In addition, a method for controlling a corresponding brake system is also described.

A synchronous machine drive control device such that a rotation angle correction amount can be detected even when a synchronous machine is rotating at high speed, and the rotation angle correction amount can be detected over a wide range, is obtained. A rotation angle correction amount calculation unit that calculates a correction amount of a rotation angle of a synchronous machine is included in an inverter control device, and the correction amount of the rotation angle is calculated based on a current detected by a current sensor by a three-phase short circuit being implemented in a state wherein the synchronous machine is rotating.

A control circuit, is disclosed, which is developed and intended for use in a motor vehicle. The control circuit comprises a first circuit portion, which is developed and intended to detect an error state of a control module and/or supply source, such as a voltage supply, of a drive arrangement, for example a drive arrangement of a brake system of the motor vehicle, and/or an electric drive of the drive arrangement, and is developed and intended to cause a short-circuit of the electric drive of the drive arrangement if an error state has been detected. A control method is also disclosed, for operating a brake system of a motor vehicle, as well as a computer program and a control unit or system having multiple control units.

A method for controlling a braking torque of a drive system and for braking a vehicle includes in a first state connecting phase connections of a synchronous machine to one another by a changeover apparatus and short circuiting the phase connections such that a first braking torque develops at the synchronous machine. In a second state the phase connections are connected to one another by the changeover apparatus and to a resistance, such that a second braking torque develops at the synchronous machine. The changeover apparatus periodically switches between the first and second states at a switching frequency of 10 Hz or higher to produce a pre-settable braking torque at the synchronous machine, with the changeover between the first state and the second state being controlled by a timing element in an unregulated manner.

A control apparatus for a vehicle including a three-phase AC motor and a power converter, the control apparatus includes an ECU. The ECU is configured to determine whether a rotation speed of the three-phase AC motor is equal to or less than a predetermined threshold and whether a stopping operation of the vehicle is performed, to determine that the vehicle stops when the rotation speed is equal to or less than the predetermined threshold and the stopping operation is performed, to determine whether the vehicle skids, and to switch a state of the power converter to a state where all on one side of the first and second switching elements are turned off and at least one on the other side of the first and second switching elements is turned on when the ECU determines that the vehicle stops and that the vehicle does not skid.