Control apparatus for controlling active vibroisolating support device

Patent metadata

Field	Value
Publication number	US-9352643-B2
Application number	US-201414154287-A
Country	US
Kind code	B2
Filing date	Jan 14, 2014
Priority date	Jan 16, 2013
Publication date	May 31, 2016
Grant date	May 31, 2016

Abstract

A control apparatus includes an actuator ECU for controlling a plurality of ACMs. When an engine is started or restarted, the actuator ECU begins a vibration suppressing control process with the ACMs for suppressing vibrations transmitted to a vehicle body when a crankshaft angle, which is represented by a CRK pulse signal from a CRK sensor, reaches a beginning crankshaft angle.

First claim

What is claimed is:

1. A control apparatus for controlling an active vibroisolating support device, which is mounted on a vehicle body and supports an engine, and which suppresses vibrations transmitted from the engine to the vehicle body by energizing an actuator, comprising:
a crankshaft rotational position acquiring unit configured to acquire a rotational position of a crankshaft that is rotatable in the engine; and
a control unit configured to energize the actuator to start a vibration suppressing control process of suppressing vibrations transmitted from the engine to the vehicle body,
wherein the crankshaft rotational position acquiring unit acquires the rotational position of the crankshaft as a crankshaft angle based on physical positional information obtained from a count value of a train of pulses of a crankshaft pulse signal, and
wherein at a time that the engine is started or restarted, the control unit is configured to:
set a specific crankshaft angle corresponding to a specific count value of the train of pulses of the crankshaft pulse signal, as a beginning crankshaft angle, at which the actuator starts the vibration suppressing control process; and
energize the actuator to start the vibration suppressing control process at a timing at which the rotational position of the crankshaft, which is acquired by the crankshaft rotational position acquiring unit, reaches the beginning crankshaft angle.

2. The control apparatus according to claim 1 , wherein the control unit acquires a rotational position of the crankshaft from the crankshaft rotational position acquiring unit in a stopped state of the engine, and establishes the predetermined rotational position based on the acquired rotational position of the crankshaft in the stopped state of the engine.

3. The control apparatus according to claim 1 , wherein the actuator is periodically expanded and contracted based on a current supplied from the control unit depending on a state of the engine, for thereby vibrating a vibrating plate fixed to the actuator in order to suppress the vibrations transmitted from the engine to the vehicle body;
the control unit supplies a predetermined direct current to the actuator, so as to move the vibrating plate to a predetermined position when the engine is started or restarted; and
the control unit supplies the current depending on the state of the engine to the actuator, so as to enable the actuator to start the vibration suppressing control process when the rotational position of the crankshaft reaches the predetermined rotational position.

4. The control apparatus according to claim 1 , further comprising:
a memory unit configured to store the rotational position of the crankshaft acquired by the crankshaft rotational position acquiring unit,
wherein the control unit acquires the rotational position of the crankshaft from the memory unit and updates the acquired rotational position of the crankshaft during a period after the engine has stopped operating until the engine is started or restarted.

5. The control apparatus according to claim 1 , further comprising:
a top-dead-center detecting unit configured to detect positional information of a piston disposed in the engine with respect to a top dead center position thereof,
wherein the control unit acquires a rotational position of the crankshaft in a stopped state of the engine from the crankshaft rotational position acquiring unit, and corrects information of the acquired rotational position of the crankshaft in the stopped state of the engine based on the positional information of the piston, which is detected by the top-dead-center detecting unit.

6. A control apparatus for controlling an active vibroisolating support device, which is mounted on a vehicle body and supports an engine, and which suppresses vibrations transmitted from the engine to the vehicle body by energizing an actuator, comprising:
a piston position acquiring unit configured to acquire a position of a piston disposed in the engine; and
a control unit configured to energize the actuator to start a vibration suppressing control process of suppressing vibrations transmitted from the engine to the vehicle body,
wherein the piston position acquiring unit acquires the position of the piston based on physical positional information obtained from a count value of a train of pulses, and
wherein at a time that the engine is started or restarted, the control unit is configured to:
set a specific piston position corresponding to a specific count value of the train of pulses, as a beginning piston position, at which the actuator starts the vibration suppressing control process; and
energize the actuator to start the vibration suppressing control process at a timing at which the position of the piston, which is acquired by the piston position acquiring unit, reaches the beginning piston position.

7. The control apparatus according to claim 6 , further comprising:
a top-dead-center detecting unit configured to detect positional information of the piston with respect to a top dead center position thereof,
wherein the control unit judges whether the piston moves from the top dead center position to a bottom dead center position, or from the bottom dead center position to the top dead center position, based on the positional information of the piston, which is acquired by the top-dead-center detecting unit.

Assignees

• Honda Motor Co Ltd

Inventors

• Yone Tatsuhiro
• Yamaguchi Takashi
• Mitsui Atsushi
• Yamanaka Kentaro

Classifications

• F16F15/00

  Suppression of vibrations in systems ({damping of non-rotary systems using inertia effect F16F7/10; prevention or isolation of vibrations in machine tools B23Q11/0032; suppression of driveline vibrations in hybrid vehicle transmissions B60W30/20} ; vehicle seat suspension devices B60N2/50; {methods or devices for protecting against, or damping of, acoustic waves, e.g. sound G10K11/16}); Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion ({vibration absorbing or balancing means for aircraft propellers B64C11/008, for rotorcraft rotors B64C27/001} ; testing static and dynamic balance of machines or structures G01M1/00) · CPC title

• B60K5/12 Primary

  Arrangement of engine supports · CPC title

• B60K5/1283 Primary

  Adjustable supports, e.g. the mounting or the characteristics being adjustable · CPC title

• F16F13/268

  comprising means for acting dynamically on the walls bounding an equilibration chamber (F16F13/264 take precedence) · CPC title