Invention Grant
- Patent Title: Method of controlling rotation speed of motor of speed-controllable hoist drive, and hoist drive
- Patent Title (中): 控制升降机驱动电机转速的方法及起重机驱动
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Application No.: US12997810Application Date: 2009-06-12
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Publication No.: US08651301B2Publication Date: 2014-02-18
- Inventor: Jussi Kiova , Janne Salomäki
- Applicant: Jussi Kiova , Janne Salomäki
- Applicant Address: FI Hyvinkaa
- Assignee: Konecranes PLC
- Current Assignee: Konecranes PLC
- Current Assignee Address: FI Hyvinkaa
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: FI20085633 20080623
- International Application: PCT/FI2009/050505 WO 20090612
- International Announcement: WO2009/156573 WO 20091230
- Main IPC: B66C13/12
- IPC: B66C13/12
Abstract:
A method according to the invention of controlling a rotation speed of a motor of a speed-controllable hoist drive comprises receiving a lift speed instruction; forming a final speed instruction by using initial information containing the lift speed instruction; and using the final speed instruction as a speed instruction for the rotation speed of the motor of the speed-controllable hoist drive. The method further comprises monitoring a position derivative of an actual value of a cable force. The initial information for forming the final speed instruction comprises the position derivative of the actual value of the cable force.
Public/Granted literature
- US20110089388A1 METHOD OF CONTROLLING ROTATION SPEED OF MOTOR OF SPEED-CONTROLLABLE HOIST DRIVE, AND HOIST DRIVE Public/Granted day:2011-04-21
Information query
